Aims. The aim of this study is to evaluate the change in incidence rate of shoulder arthroplasty, indications, and surgeon volume trends associated with these procedures between January 2003 and April 2021 in the province of Nova Scotia, Canada. Methods. A total of 1,545 patients between 2005 and 2021 were analyzed. Patients operated on between 2003 and 2004 were excluded due to a lack of electronic records. Overall, 84.1% of the surgeries (n = 1,299) were performed by two fellowship-trained upper limb surgeons, with the remainder performed by one of the 14 orthopaedic surgeons working in the province. Results. Total shoulder arthroplasty (TSA) was the most frequent procedure (32.17%; n = 497), followed by stemmed hemiarthroplasty (SHA) (27.7%; n = 428). The most frequent indication for primary shoulder arthroplasty was degenerative osteoarthritis (58.1%; n = 882), followed by acute proximal humerus fracture in 15.11% (n = 245), and rotator cuff arthropathy in 14.18% (n = 220). The overall rate of revision was 7.7% (2.8% to 11.2%). The number of TSAs and reverse shoulder arthroplasties (RSAs) has been increasing since 2016. The amount of revision cases is proportional to the number of operations performed in the same year throughout the study period. Conclusion. The incidence of shoulder arthroplasty in the Maritime Provinces has increased over the last 16 years. Revision rates are similar the those found in other large database registries. Reverse shoulder arthroplasty prevalence has increased since 2016. Cite this article: Bone Jt Open 2023;4(8):567–572

Reverse Total shoulder arthroplasty (RTSA) was initially introduced to treat rotator cuff arthropathy. With proven successful long-term outcomes, it has gained a noteworthy surge in popularity with its indications consequently being extended to treating various traumatic glenohumeral diseases. Several countries holding national registries remain a guide to the use the prosthesis, however a notable lack of epidemiological data still exists. More so in South Africa where the spectrum of joint disease related to communicable diseases such as HIV and tuberculosis may influence indications and patient demographics. By analysing the epidemiology of patients who underwent RTSA at our institution, we aimed to outline the local disease spectrum, the patients afflicted and indications for surgery. A retrospective review of all patients operated within the sports unit between 1 January 2019 and 31 December 2022 was conducted. An analysis of the epidemiological data pertaining to patient demographics, diagnosis, indications for surgery and complications were recorded. Included in the review were 58 patients who underwent primary RTSA over the 4-year period. There were 41 females and 17 male patients, age <55 years (n= 14) >55 years (n=44). The indications included 23 rotator cuff arthropathy (40%), 12 primary glenohumeral osteoarthritis (OA) (20%), 10 avascular necrosis (AVN) humeral head (17%), 7 inflammatory OA (12%), 4 chronic shoulder dislocation (7%) and 2 sequalae of proximal humerus fractures (4%). The study revealed RTSA being performed in patients older than 55 years of age, the main pathologies included rotator cuff arthropathy and primary OA, however AVN and shoulder dislocations secondary to trauma contributed significantly to the total tally of surgeries undertaken. This highlights the disease burden of developing countries contributing to patients presenting for RTSA

Thoracic hyperkyphosis (TH – Cobb angle >40°) is correlated with rotator cuff arthropathy and associated with anterior tilting and protraction of scapula, impacting the glenoid orientation and the surrounding musculature. Reverse total shoulder arthroplasty (RTSA) is a reliable surgical treatment for patients with rotator cuff arthropathy and recent literature suggests that patients with TH may have comparable range of motion after RTSA. However, there exists no study reporting the possible link between patient-reported outcomes, humeral retroversion and TH after RTSA. While the risk of post-operative complications such as instability, hardware loosening, scapular notching, and prosthetic infection are low, we hypothesize that it is critical to optimize the biomechanical parameters through proper implant positioning and understanding patient-specific scapular and thoracic anatomy to improve surgical outcomes in this subset of patients with TH. Patients treated with primary RTSA at an academic hospital in 2018 were reviewed for a two-year follow-up. Exclusion criteria were as follows: no pre-existing chest radiographs for Cobb angle measurement, change in post-operative functional status as a result of trauma or medical comorbidities, and missing component placement and parameter information in the operative note. As most patients did not have a pre-operative chest radiograph, only seven patients with a Cobb angle equal to or greater than 40° were eligible. Chart reviews were completed to determine indications for RTSA, hardware positioning parameters such as inferior tilting, humeral stem retroversion, glenosphere size/location, and baseplate size. Clinical data following surgery included review of radiographs and complications. Follow-up in all patients were to a period of two years. The American Shoulder and Elbow Surgeons (ASES) Shoulder Score was used for patient-reported functional and pain outcomes. The average age of the patients at the time of RTSA was 71 years old, with six female patients and one male patient. The indication for RTSA was primarily rotator cuff arthropathy. Possible correlation between Cobb angle and humeral retroversion was noted, whereby, Cobb angle greater than 40° matched with humeral retroversion greater than 30°, and resulted in significantly higher ASES scores. Two patients with mean Cobb angle of 50° and mean humeral retroversion 37.5° had mean ASES scores of 92.5. Five patients who received mean humeral retroversion of 30° had mean lower ASES scores of 63.7 (p < 0 .05). There was no significant correlation with glenosphere size or position, baseplate size, degree of inferior tilting or lateralization. Patient-reported outcomes have not been reported in RTSA patients with TH. In this case series, we observed that humeral stem retroversion greater than 30° may be correlated with less post-operative pain and greater patient satisfaction in patients with TH. Further clinical studies are needed to understanding the biomechanical relationship between RTSA, humeral retroversion and TH to optimize patient outcomes

Pain is a common presenting symptom of patients with shoulder conditions, yet there has been little work done to accurately describe its distribution and nature. We studied all patients attending the Royal Devon and Exeter Hospital shoulder clinic from August 2012 – 2013. Patients completed a questionnaire detailing their Oxford Shoulder Score and a validated neuropathic pain questionnaire. Patients were given diagrams to draw on their perceived location of pain or abnormal sensation. We analysed all patients with frozen shoulder (48), osteoarthritis (37) and rotator cuff arthropathy (17). We found that neuropathic pain is common in patients with shoulder conditions identified in 39% of OA patients, 42% with rotator cuff arthropathy and 57% with frozen shoulder. Pain outside the shoulder was reported in over 50% of patients, commonly the forearm, hand, neck and chest. Frozen shoulder was especially associated with pain outside of the shoulder with 39% describing symptoms in the neck or chest, 21% into the forearm and 18% into the hand. Interestingly, neuropathic pain radiating down the arm was not described in the rotator cuff arthropathy group. The high prevalence of neuropathic symptoms and pain felt outside the shoulder aids diagnosis and more accurately identifies these conditions

Rotator cuff arthropathy is characterised by pain and loss of function. Surgical management of the condition is difficult and controversial. We have conducted a direct comparison between two shoulder replacement systems with different design rationales specifically recommended for the management of rotator cuff arthropathy. 15 patients who had previously undergone bipolar shoulder replacements (BIOMET) were matched for sex and age with patients who underwent DELTA reverse geometry shoulder replacements (DEPUY). All patients in this study were over 70 years old and had rotator cuff arthropathy with pain as their primary complaint and with a maximum active elevation of their arm of 50°. Patients were assessed clinically and radiologically, preoperatively in the 12 months after surgery. All patients benefited from surgery with regard to pain relief, but the improvement as measured on the visual analogue scale was greater in those with the reverse geometry group (p< 0.05). Active range of movements was only marginally improved in the bipolar group. However there was a marked improvement in the reverse geometry group with 14 out of 15 patients able to actively elevate their arm about shoulder height. This was a highly statistically significant finding (p< 0.01). This case comparison study strongly supports the reverse geometry design rationale over the bipolar design for the management of rotator cuff arthropathy in the elderly

The Delta total shoulder replacement is a reversed, semi-constrained prosthesis and is recommended for the management of rotator cuff arthropathy and other difficult reconstructive shoulder problems. It was initially advised to use this prosthesis in patients older than 75. There were reports saying the complication rates of this prosthesis are high and patients' satisfaction and functional outcome is far from being satisfactory. In our study we wanted to evaluate results and complications of reverse shoulder arthroplasty in practice of single surgeon. In our study we reviewed patients who had reverse shoulder arthroplasty performed between 2001 and 2009. We evaluated them clinically and radiologically. We measured functional outcome using Constant score, we used Oxford Shoulder score to measure patients' subjective outcome. We compared our results to pre-operative Oxford Shoulder score (unfortunately no pre-op constant score was done). X-rays were assessed by independent surgeon who was not involved in care of the patients. Out of 36 reverse shoulder replacements performed by Mr. Sinha from 2001 to 2009 we managed to review in clinic 29 shoulders. 3 patients died from causes not related to surgery, 3 patients were too unwell to attend clinic, we lost 1 patient to follow up. Mean time from operation to follow up was 33 months (range 6 to 82 months). Average patients' age at time of surgery was 73,4 years (range: 44 to 90). Indications included rotator cuff arthropathy (86%), other indications were trauma (10%) and revision of failed hemiarthroplasty (4%). There were neither revisions nor infections in our group. There was 1 dislocation that occurred after operation, this was reduced under GA and never re-dislocated again. 12 patients (41%) were very pleased with result of surgery, 15 patients (52%) were satisfied and 2 patients said surgery did not meet their expectations. Mean Shoulder Oxford score improved from 20.8 (range 2 to 36) pre-operatively to 36.7 (range 20 to 48) during follow up. 3 patients had Oxford Shoulder score of 48 (maximum). Oxford shoulder score deteriorated in 2 cases (one in case when replacement was done to treat fracture). Post operative Constant score was 65.5. All patients but one declared overall improvement. 10 patients (34%) reported no pain at all. 5 patients who were 65 years old or younger at time of surgery did well and improved their shoulder function. In our experience reverse geometry shoulder replacement is a very good solution for rotator cuff arthropathy. Results in proximal humeral fracture are worse, but the number of patients we had was small and our experience is limited. Mid term results are very satisfactory overall, even in younger and more demanding patients. The complications were rare and overall patients' satisfaction very high. We think more research needs to be done to asses long term results, especially in younger population

In reverse shoulder arthroplasty (RSA), a high complication rate is noted in the international literature (24.7%), and limited local literature is available. The complications in our developing health system, with high HIV, tuberculosis and metabolic syndrome prevalence may be different from that in developed health systems where the literature largely emanates from. The aim of this study is to describe the complications and complication rate following RSA in a South African cohort. An analytical, cross-sectional study was done where all patients’ who received RSA over an 11 year period at a tertiary hospital were evaluated. One-hundred-and-twenty-six primary RSA patients met the inclusion criteria and a detailed retrospective evaluation of their demographics, clinical variables and complication associated with their shoulder arthroplasty were assessed. All fracture, revision and tumour resection arthroplasties were excluded, and a minimum of 6 months follow up was required. A primary RSA complication rate of 19.0% (24/126) was noted, with the most complications occurring after 90 days at 54.2% (13/24). Instability was the predominant delayed complication at 61.5% (8/13) and sepsis being the most common in the early days at 45.5% (5/11). Haematoma formation, hardware failure and axillary nerve injury were also noted at 4.2% each (1/24). Keeping in mind the immense difference in socioeconomical status and patient demographics in a third world country the RSA complication rate in this study correlates with the known international consensus. This also proves that RSA is still a suitable option for rotator cuff arthropathy and glenohumeral osteoarthritis even in an economically constrained environment like South Africa

Introduction. The purpose of this study was to compare implant survivorship and functional outcomes in patients undergoing reverse total shoulder arthroplasty (RTSA) for acute proximal humeral fracture (PHF) with those undergoing elective RTSA in a population-based cohort study. Methods. Prospectively collected data from the New Zealand Joint Registry from 1999 to 2021 and identified 7,277 patients who underwent RTSA. Patients were categorized by pre-operative indication, including acute PHF (10.1%), rotator cuff arthropathy (RCA) (41.9%), osteoarthritis (OA) (32.2%), rheumatoid arthritis (RA) (5.2%) and old traumatic sequelae (4.9%). The PHF group was compared with elective indications based on patient, implant, and operative characteristics, as well as post-operative outcomes (Oxford Shoulder Score [OSS], and revision rate) at 6 months, 5 and 10 years after surgery. Survival and functional outcome analyses were adjusted by age, sex, ASA class and surgeon experience. Results. Implant survivorship at 10 years for RTSA for PHF was 97.3%, compared to 96.1%, 93.7%, 92.8% and 91.3% for OA, RCA, RA and traumatic sequelae, respectively. When compared with RTSA for PHF, the adjusted risk of revision was higher for traumatic sequelae (hazard ratio = 2.29; 95% CI:1.12–4.68, p=0.02) but not for other elective indications. At 6 months post-surgery, OSS were significantly lower for the PHF group compared to RCA, OA and RA groups (31.1±0.5 vs. 35.6±0.22, 37.7±0.25, 36.5±0.6, respectively, p<0.01), but not traumatic sequelae (31.7±0.7, p=0.43). At 5 years, OSS were only significantly lower for PHF compared to OA (37.4±0.9 vs 41.0±0.5, p<0.01), and at 10 years, there were no differences between groups. Discussion and Conclusion. RTSA for PHF demonstrated reliable long-term survivorship and functional outcomes compared to other elective indications. Despite lower functional outcomes in the early post-operative period for the acute PHF group, implant survivorship rates were similar to patients undergoing elective RTSA

Although, reverse shoulder arthroplasty has initially been introduced for rotator cuff arthropathy, its application has been expanded on fracture sequelae, chronic dislocations and even comminuted fractures of the humeral head in elderly patients. The purpose of this study is to present our experience and the mid-term clinical results of this type prosthesis. Between 2006 and 2008 16 reverse shoulder arthroplasties have been carried out in our department. Fourteen patients were female and 2 male with an average age of 72.4 years (55–81). Eleven patients had true rotator cuff arthropathy, 3 malunion of 4-part fractures, one chronic anterior shoulder dislocation and finally one patient had bilateral chronic posterior shoulder dislocation. In 2 cases we used the Delta prosthesis and in a further 14 cases the Aquealis Arthroplasty. Routine postoperative follow up was at 3,6,12 and 24 months and included plain radiographic control and clinical evaluation with the Constant Shoulder Score. All patients report significant pain relief and an average improvement of the Constant Score from 40.5 to 72.3. Two patients had anterior dislocation of the prosthesis 4 days postoperatively and we proceeded to the application of a 9 mm metal spacer and bigger polyethylene size. In one patient neuroapraxia of the axillary nerve was observed; this resolved 3 months postoperatively. Continuous clinical improvement was observed in some patients up until 18 months postoperatively. Our clinical results are very satisfactory and reveal that reverse shoulder arhroplasty is a very good option for a broad spectrum of pathologic shoulder conditions

Although, reverse shoulder arthroplasty has initially been introduced for rotator cuff arthropathy, its application has been expanded on fracture sequelae, chronic dislocations and even comminuted fractures of the humeral head in elderly patients. The purpose of this study is to present our experience and the mid-term clinical results of this type prosthesis. Between 2006 and 2008 16 reverse shoulder arthroplasties have been carried out in our department. Fourteen patients were female and 2 male with an average age of 72.4 years (55–81). Eleven patients had true rotator cuff arthropathy, 3 malunion of 4-part fractures, one chronic anterior shoulder dislocation and finally one patient had bilateral chronic posterior shoulder dislocation. In 2 cases we used the Delta prosthesis and in a further 14 cases the Aquealis Arthroplasty. Routine postoperative follow up was at 3,6,12 and 24 months and included plain radiographic control and clinical evaluation with the Constant Shoulder Score. All patients report significant pain relief and an average improvement of the Constant Score from 40.5 to 72.3. Two patients had anterior dislocation of the prosthesis 4 days postoperatively and we proceeded to the application of a 9 mm metal spacer and bigger polyethylene size. In one patient neuroapraxia of the axillary nerve was observed; this resolved 3 months postoperatively. Continuous clinical improvement was observed in some patients up until 18 months postoperatively. Our clinical results are very satisfactory and reveal that reverse shoulder arhroplasty is a very good option for a broad spectrum of pathologic shoulder conditions

Purpose: The purpose of the study was to evaluate the clinical and radiological results of Copeland cementless surface replacement arthroplasty (CSRA) applied in patients with two main indications. Patients and Methods: The study was conducted on fifty shoulders in fifty patients between 2003 and 2005; 17 patients suffered from rotator cuff pathology. The patients were prospectively followed up clinically and radiologically for a mean of 12.7 months (range, 6–30 months). There were 30 female and 20 male shoulders. The mean age was 66.63 years (range, 21–85). The mean operative time was 44.6 minutes (range, 29–62 minutes). The clinical assessment was performed with the Constant score. Results: The constant score significantly improved from a mean of 15.52 points preoperatively to 57.02 points postoperatively. Of the patients, 96% considered the shoulder to be much better or better as a result of the operation. The Constant-Score improved in the group with degenerative arthritis from 16.32 point pre- to 62.25 postoperatively. In rotator cuff arthropathy the score improved from 14.19 to 53.06. Radiologically, the humeral offset, the lateral gleno-humeral offset (coracoid base to the greater tuberosity) as well as the acromiohumeral distance were significantly increased. No intra-or postoperative complications encountered. Conclusion: We conclude that the shoulder surface replacement arthroplasty allows good conservation of the bone stock and avoiding the complications encountered with the stemmed prostheses. In patients with rotator cuff arthropathy there are two main indications:. - patients below the age of 70, in order to avoid complications of the reverse prosthesis. - patients with still a goof active range of motion

Introduction: Glenohumeral arthritis secondary to chronic cuff deficiency not only leads to serious compromise in shoulder function but also poses a surgical challenge. There is no consensus regarding management of this problem although different arthroplasty options have been tried with variable results. We present our experience with managing this difficult problem using a shoulder resurfacing and subscapularis Z-plasty in order to improve shoulder movements, pain and function. Patient and Methods: This study was conducted on 30-patients with rotator cuff arthropathy operated by a single surgeon at a district general hospital. There were 21 female and 9 male patients with mean age 73 years (range 62–85 years). The average duration of symptoms prior to treatment was 5.45 years (range 2–15 years). Twenty patients had uncemented shoulder resurfacing while remaining ten patients had cemented resurfacing procedure. The mean follow-up was 21 months (range 36–18 months). The patients were assessed at 3 months, 6 months, 12 months and 24 months postoperatively with European Society for shoulder and Elbow Surgery Score (ESSES) and radiograph at each visit. Results: The ESSES score significantly improved from a mean of 47.5 preoperatively to 77.5 postoperatively, with most improvement being in subjective scoring (pain and ADL) followed by improvement in external rotation and forward flexion movement due to lengthening of subscapularis by Z-plasty. The VAS score for pain improved from average 7.4 preoperatively to 0.9 at 6 months postoperatively. On subjective scoring most patients reported good to excellent result at 6 months following surgery. There was no difference in outcome scores between cemented and uncemented resurfacing groups. No intraoperative or postoperative complications were encountered. Our early results with shoulder resurfacing in management of rotator cuff arthropathy are encouraging. This bone conserving surgery may serve as an alternative to major procedures like reverse shoulder arthroplasty in selected group of patients

Abstract. Objective. To investigate the safety and cost-effectiveness of interscalene brachial plexus block/regional anaesthesia (ISB-RA) in patients undergoing reverse total shoulder replacement. Methods. This retrospective study included 15 patients with symptomatic rotator cuff arthropathy who underwent reverse total shoulder arthroplasty (rTSA) under ISB-RA without general anaesthesia in the beach chair position from 2010 to 2018. The mean patient age was 77 years (range 59–82 years). Patients had associated medical comorbidities: American Society of Anesthesiologists (ASA) grade 2–4. Assessed parameters were: duration of anaesthesia, intra-operative systolic blood pressure variation, sedation and vasopressor use, duration of post-operative recovery, recovery scores, length of stay, and complications. A robust cost analysis was also performed. Results. The mean (range) duration of anaesthesia was 38.66 (20–60) min. Maximum and minimum intra-operative systolic blood pressure ranges were 130–210 and 75–145 mmHg, respectively (mean [range] drop, 74.13 [33–125] mmHg). Mean (range) propofol dose was 1.74 (1–3.0) mg/kg/h. The Median (interquartile range) post-operative recovery time was 30 (20–50) min. The mean (range) postoperative recovery score (local scale, range 5–28 where lower values are superior) was 5.2 (5–8). The mean (range) length of stay was 8 (1–20 days); the two included patients with ASA grade 2 were both discharged within 24 hours. One patient with predisposing history developed pneumonia; however, there were no complications related to ISB-RA. The mean (range) cost per patient was £101.36 (£59.80-£132.20). Conclusions. Our data demonstrate that rTSA under ISB-RA is safe, cost-effective and a potentially viable alternative for patients with multiple comorbidities. Notably, patients with ASA grade 2 who underwent rTSA under ISB-RA had a reduced length of stay and were discharged within 24 hours

Introduction. The use of reverse total shoulder arthroplasty (RSA) is becoming increasingly common in the treatment of rotator cuff arthropathy. Standard RSA technique involves medialising the centre of rotation (COR) maximising the deltoid lever arm and compensating for rotator cuff deficiency. However reported complications include scapular notching, prosthetic loosening and loss of shoulder contour. As a result the use of Bony Increased Offset Reverse Shoulder Arthroplasty (BIO-RSA) has been gaining in popularity. The BIO-RSA is reported to avoid these complications by lateralising the COR using a modified base plate, longer central post and augmentation with cancellous bone graft harvested from the patients humeral head. Objectives. This study aims to compare the outcome in terms of analgesic effect, function and satisfaction, in patients treated with standard RSA and BIO-RSA. Methods. All cases were performed in a single centre by one of two upper limb consultant orthopaedic surgeons over a consecutive 2-year period. At time of listing for operation, the decision as to whether to undertake a bony-increased offset reverse total shoulder was made. Standard deltopectoral approach was performed. Standard and Bony increased offset Tournier reverse was the implant of choice (BIO-RSA). All patients underwent a standardised rehabilitation programme. Standard follow up was clinical review with radiographs at 2 weeks, 6weeks and 3months. Retrospective data was collected using case notes on patient reported stausfaction and oxford shoulder score, analgesia requirement at final follow up, and final range of movement. Results. A total of 60 patients (65 shoulders) were treated with reverse total shoulder replacements (RSA) within a 2-year period in a single centre for chronic complex shoulder conditions. Mean age at time of intervention was 74.1years (49.3 – 88.7). Mean follow up was 7.1 months (3.4 – 24). Average time to discharge 16.1 months (3.4 – 37.4). 43 patients currently under review. Of the 65 shoulders, 40 underwent BIO-RSA procedures. Indications for surgery were predominantly rotator cuff arthropathy (N=36). Other indications included severe osteoarthritis (N=1) and complex proximal humeral fracture (N=3). The remaining 25 patients treated with standard RSA were similar in terms of indication and basic demographics. In terms of range of movement, outcomes between the two groups were broadly similar. Patients receiving BIO-RSA demonstrated mean active forward flexion of 92.2° (70–120°) and abduction 93.3° (80–120°). The RSA group had mean forward flexion 90.5° (50–130°) and mean abduction 88.6° (40–160°). Both groups had excellent analgesic effect with 92% in each either being completely pain free or requiring only occasional analgesia. The majority of patients were either very satisfied or satisfied with the outcome of the surgery. Mean Oxford shoulder score for the BIO-RSA group was 4.9 (0–13) preoperatively and 43.7 (36–48) postoperatively. The mean RSA pre-operative score was 7.9 (0–19) and postoperatively 40.2(32–48). In total three patients experienced complications; 1 haematoma (BIO-RSA), 1 brachial plexus contusion (BIO-RSA) and 1 deep infection (RSA). Conclusion. If grafting is necessary, the use of BIO-RSA within this centre seems to have comparable results to those undergoing standard RSA. Early results also suggest the Bio-RSA allows earlier improvement and conserves a larger bone stock. These early result are encouraging however a further study with longer follow-up is required

This pilot study reports the clinical outcomes of a combination of partial subscapularis tendon transfer and small-head hemiarthroplasty in patients with rotatator cuff arthropathy. A total of 30 patients (30 shoulders; eight men and 22 women) with a mean age of 74 years (55 to 84) were assessed at a mean follow-up of 31 months (24 to 60). The inclusion criteria were painful cuff tear arthropathy with normal deltoid function and a non-degenerative subscapularis muscle and tendon and a preserved teres minor. Outcome was assessed using the University of California Los Angeles score, the Japanese Orthopaedic Association score, and the Oxford Shoulder Score. Radiographic measurements included the centre of rotation distance and the length of the deltoid. All clinical scores were significantly improved post-operatively. The active flexion and external rotation improved significantly at the most recent follow-up (p < 0.035). Although the mean centre of rotation distance changed significantly (p < 0.001), the mean length of the deltoid did not change significantly from the pre-operative value (p = 0.29). The change in the length of the deltoid with < 100° flexion was significantly less than that with > 100° (p < 0.001). Progressive erosion of the glenoid was seen in four patients. No patient required revision or further surgery. A combination of partial subscapularis tendon transfer and small-head hemiarthroplasty effectively restored function and relieved pain in patients with rotator cuff arthropathy. Cite this article: 2015;97-B:1090–5

Background. The purpose of this study was to determine if thresholds regarding the percentage of maximal improvement in the Simple Shoulder Test (SST) and American Shoulder and Elbow Surgery (ASES) score exist that predict “excellent” patient s­atisfaction (PS) following reverse total shoulder arthroplasty (RSA). Methods. Patients undergoing RSA using a single implant system were evaluated pre-operatively and at a minimum 2-year follow-up. Receiver-operating-characteristic (ROC) curve analysis determined thresholds to predict “excellent” PS by evaluating the percentage of maximal improvement for SST and ASES. Pre-operative factors were analyzed as independent predictors for achieving SST and ASES thresholds. Results. 198 (SST) and 196 (ASES) patients met inclusion criteria. For SST and ASES, ROC analysis identified 61.3% (p<.001) and 68.2% (p<.001) maximal improvement as the threshold for maximal predictability of “excellent” satisfaction respectively. Significant positive correlation between the percentage of maximum score achieved and “excellent” PS for both groups were found (r=.440, p<.001 for SST score; r=0.417, p<.001 for ASES score). Surgery on the dominant hand, greater baseline VAS Pain, and cuff arthropathy were independent predictors for achieving the SST and ASES threshold. Conclusion. Achievement of 61.3% of maximal SST score improvement and 68.3% of maximal ASES score improvement represent thresholds for the achievement of “excellent” satisfaction following RSA. Independent predictors of achieving these thresholds were dominant sided surgery and higher baseline pain VAS scores for SST, and rotator cuff arthropathy for ASES. Keywords. Percentage of maximal improvement; Predictors; American Shoulder and Elbow Surgery Score; Simply Shoulder Test; Reverse shoulder Arthroplasty; Satisfaction. Level of Evidence. Level III

Reverse total shoulder arthroplasty (RTSA) has improved the lives of many patients with complex shoulder pathology including rotator cuff arthropathy, glenoid bone defects, post-traumatic arthritis and failed non-constrained total shoulder arthroplasty. However, this non-anatomic replacement has a very different complication profile than has been observed with non-constrained shoulder arthroplasty and the revision of RTSA can be extremely challenging. The purpose of this talk is to review some of the typical complications observed in RTSA including instability, infection, stress fractures, peri-prosthetic fractures and glenoid failures, and discuss the treatment options for dealing with these difficult problems

Various arthroscopic techniques using differing graft materials have been described and present a potential alternative to arthroplasty for rotator cuff arthropathy. We describe the short-term outcomes of allograft reconstruction, having evolved of our surgical technique from graft interposition to superior capsule reconstruction (SCR). All patients with an irreparable tear, in the absence of clinical and radiograph evidence of osteoarthritis, who underwent an allograft (Graft Jacket. TM. ) reconstruction with either an arthroscopic interposition or SCR technique within our institution were included. A retrospective case note analysis was performed to ascertain perioperative details including total operating and consumable implant costs. 15 patients were in the interposition group, mean age 66 years (48–77). Mean postoperative follow-up time was 17 months (1.9 −27.8). The mean OSS improved from 30.6 to 35.7 (p<0.05). Additionally, mean pain scores out of 10 improved from 7.7 to 1.5 (p<0.01). Mean satisfaction for the surgery was 7.8 out of 10. Complications included 2 re-ruptures (13.3%), 1 infection (6.7%) and 1 case of no improvement (6.7%). In the SCR group, there were 10 patients, mean age 64.5 (56– 68 years). Half of these patients had previous rotator cuff surgery. Mean postoperative follow-up time was 8.7 months (1.9 – 16.3). The mean OSS improved from 24 to 32.9 (p<0.01). Similarly, pain scores decreased from 7.9 to 3.5 (p<0.01). Mean satisfaction was 7.2. Complications included 1 case of no improvement (10%) resulting in a reverse TSR and 1 re-rupture (10%). A formal, prospective comparison trial is advocated to determine if SCR is superior

INTRODUCTION. Shoulder joint prostheses have become the most commonly replaced after knee and hip artificial implants. Reverse shoulder arthroplasty (RSA) is the treatment option for patients with severe osteoarthritis, rotator cuff arthropathy or a massive rotator cuff tear with pseudoparalysis. Though successful, the long-term survival of such implants are limited by wear of the materials in contact [1, 2]. The aim of this study was to investigate RSA wear in vitro using a clinically relevant activities of daily living (ADLs). MATERIALS AND METHODS. Four new JRI Orthopaedics Reverse Shoulder 42 mm diameter VAIOS with cobalt-chromium (CoCr) glenospheres and ultra-high molecular weight polyethylene (UHMWPE) humeral components were tested. A five million cycles wear test was undertaken using the unique Newcastle Shoulder Wear Simulator with dilute bovine serum as a lubricant. “Mug to mouth” was performed as the ADL to the test prostheses in intervals of 100 cycles, following by 5 seconds of high load (450N) with no motion simulating an ADL such as “lifting an object”. This combined load cycle was then repeated. A fifth reverse shoulder prosthesis was subject to dynamic loading only in a soak control station. Wear was assessed gravimetrically and roughness (Sa) of the articulating surfaces was measured with a non-contacting profilometer. RESULTS AND DISCUSSION. The mean wear rate and standard deviation of the UHMWPE components was 11.4±3.7 mm. 3. /million cycles, while the CoCr components showed minimal wear over the test duration of 0.01± 0.02 mm. 3. /million cycles (Fig.1). Wear rates are comparable with Kohut et al. (14.1 mm. 3. /million cycles) [3] and Smith et al. (14.3±1.6 mm. 3. /million cycles) [4]. The CoCr glenospheres roughness was unchanged, from 32±8 nm Sa to 28±8 nm Sa over the 5 million cycles of the test (p=0.017), while the UHMWPE humeral components became smoother, from 692±123 nm Sa to 42±29 nm Sa (Fig.2), showing a statically significant change (p<0.001). CONCLUSION. The present study is the first wear test of artificial shoulder joints using a Motion-Load-Motion configuration as a clinically relevant physiological pattern of motion and load. Results are comparable with those found in the literature for in vitro testing of reverse shoulder replacements. For any figures or tables, please contact the authors directly

Before reverse shoulder replacement was an option for rotator cuff tear arthropathy the treatment modalities were limited to injections and physical therapy for pain control, arthroscopic debridement with or without biceps tenodesis/tenotomy and hemiarthroplasty. Functional improvement was limited with these treatment options and success for pain control was moderate at best. The destructive nature of the rotator cuff deficient shoulder continued with medialization of the glenoid and erosion of the acromion seen even after replacement with hemiarthroplasty. The end result usually left the patient with a pseudo paralysis of the shoulder region functionally and uncontrolled pain that made later revision with a reverse implant difficult or impossible. Reverse arthroplasty was released for use in United States in 2004 for rotator cuff tear arthropathy. This initial procedure had a number of related complications that have been improved on over time with changes in implant design and better operative techniques. The long term results with reverse total shoulder arthroplasty have made this the procedure of choice for contained cuff tear arthropathy