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Orthopaedic Proceedings
Vol. 106-B, Issue SUPP_20 | Pages 5 - 5
12 Dec 2024
Shah D Shah A
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Introduction & Aim. The use of All-Poly Tibia has been in practice since the early 1970's. Recently due to the reports on wear and osteolysis in other articulations, this component has generated significant interest. In the current study we aim to report early medium-term results of All-poly Tibial components in elderly (>70 years) patients. Method. Study of 455 cases done between 2005-2020. All the cases were performed by a single surgeon. All-Poly Tibial component implantations were performed using Standard mechanical jigs and the same posterior-stabilized implant was used for all cases. Results. 20 cases were lost to follow-up. 25 patients died due to natural causes. Mean age at index surgery was 74 years (70 - 91 years). Preop KSS average was 47 (31- 62). Post operative at the last follow up was 87 (71- 93). Of the 410 cases there were 8 revisions, 6 for deep sepsis and 2 for periprosthetic fractures. There were no revisions for aseptic loosening or osteolysis. All cases are performing well functionally and clinically. 18 cases had a non-progressive radiolucent line beneath the Tibial component. The combination of perfect alignment and soft tissue balance creates an environment for a successful TKR. The choice of the All-Poly Tibial component for functionally low demand age group patients reduces the chances of premature wear and osteolysis. In elderly patients the implant should outlive the patient. Here it is observed that at 5-7 years aseptic loosening and subsequent revision chances are low. The all-poly Tibial component is significantly cheaper as compared to its metal back counterpart. Conclusion. An excellent clinical result in our hands for this group of patients supports the continued use of this implant strongly


Orthopaedic Proceedings
Vol. 94-B, Issue SUPP_XXXIX | Pages 38 - 38
1 Sep 2012
Harrison T Robinson P Cook A Parker M
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The purpose of the study was to identify factors that affect the incidence of deep wound infection after hip fracture surgery. Data from a hip fracture database of 7057 consecutively treated patients at a single centre was used to determine the relationship between deep wound sepsis and a number of factors. Fisher's exact test and the unpaired T test were used. All patients were initially followed up in a specialist clinic. In addition a phone call assessment was made at one year from injury to check that no later wound healing complications had occurred. There were 50 cases of deep infection (rate of 0.7%). There was no significant difference in the rate of deep sepsis with regards to the age, sex, pre-operative residential status, mobility or mental test score of the patient. Specialist hip surgeons and Consultants have a lower infection rate compared with surgeons below Consultant grade, p=0.01. The mean length of anaesthesia was longer in the sepsis group (76minutes) compared to the no sepsis group (65minutes), this was significant, p=0.01. The patient's ASA grade and fracture type were not significant factors. The rate of infection in intracapsular fractures treated by hemiarthroplasty was significantly greater than those that had internal fixation, p=0.001. The rate of infection in extracapsular fractures fixed with an extra-medullary device was significantly greater than those fixed with an intra-medullary device, p=0.021. The presence of an infected ulcer on the same leg as the fracture was not associated with a higher rate of deep infection. In conclusion we have found that the experience (seniority) of the surgeon, the length of anaesthesia and the type of fixation used are all significant factors in the development of deep sepsis. These are all potentially modifiable risk factors and should be considered in the treatment of hip fracture patients


The Journal of Bone & Joint Surgery British Volume
Vol. 93-B, Issue 4 | Pages 548 - 551
1 Apr 2011
Murphy E Spencer SJ Young D Jones B Blyth MJG

The objective of this study was to determine the effectiveness of screening and successful treatment of methicillin-resistant Staphylococcus aureus (MRSA) colonisation in elective orthopaedic patients on the subsequent risk of developing a surgical site infection (SSI) with MRSA. We screened 5933 elective orthopaedic in-patients for MRSA at pre-operative assessment. Of these, 108 (1.8%) were colonised with MRSA and 90 subsequently underwent surgery. Despite effective eradication therapy, six of these (6.7%) had an SSI within one year of surgery. Among these infections, deep sepsis occurred in four cases (4.4%) and superficial infection in two (2.2%). The responsible organism in four of the six cases was MRSA. Further analysis showed that patients undergoing surgery for joint replacement of the lower limb were at significantly increased risk of an SSI if previously colonised with MRSA. We conclude that previously MRSA-colonised patients undergoing elective surgery are at an increased risk of an SSI compared with other elective patients, and that this risk is significant for those undergoing joint replacement of the lower limb. Furthermore, when an infection occurs, it is likely to be due to MRSA


Orthopaedic Proceedings
Vol. 94-B, Issue SUPP_XXI | Pages 117 - 117
1 May 2012
R. T T. H C. F A. R
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Purpose. To identify the incidence and reasons for revision of the Oxford prosthesis (OXF) in New Zealand. Methods. Review and compare UKA and TKA data including patient-generated Oxford scores after operation. Results. 105 surgeons performed 3,624 OXF (66.5% of all UKA). UKA made up 12.8% of all knee arthroplasties. There were 216 OXF revisions and revision rate (RR) of 1.39 per 100 component-years (p100cy); for UKA this was 1.42 p100cy, and for TKA 0.54 p100cy (OXF vs TKA p< 0.0001). The indications for OXF revisions were unexplained pain (38.0%); aseptic loosening (38.0%); bearing dislocation (9.3%) and deep sepsis (4.2%). For TKA, unexplained pain (28%) was significantly lower than from OXF (p=0.005). Revision for deep sepsis was significantly lower for OXF compared with TKA (4.2% vs 13.1%, p < 0.001). The Oxford scores 6 months post-op were excellent or good in 79% of OXF vs 72% TKA patients (p< 0.0001); at 5 years after operation these were 88% for OXF and 81% for TKA (p=0.001). Twenty high-use OXF surgeons (10 or more operations/year) performed 44% of the operations (RR of 1.3 p100cy), 62 medium-use surgeons (2-9/year) performed 54% (RR of 1.3 p100cy). 23 low-use surgeons (2 or less/year) performed 2% (RR of 3.9p100cy). The differences in RR high vs low users (p< 0.001) and medium vs low groups (p< 0.001) were significant. RR for OXF high or medium users was significantly higher than the overall rate for TKA (p< 0.001). Conclusion. RR for the OXF was 2.5 times greater than that for TKA. Deep infection rate was lower, and 6-month and 5-year function scores were significantly higher OXF vs TKA


Orthopaedic Proceedings
Vol. 98-B, Issue SUPP_22 | Pages 85 - 85
1 Dec 2016
Jones R
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Obtaining primary wound healing in total joint arthroplasty (TJA) is essential to a good result. Wound healing disturbances (WHD) can occur and the consequences can be devastating to the patient and to the surgeon. Determination of the host healing capacity can be useful in predicting complications. Cierney and Mader classified patients as Type A: no healing compromises and Type B: systemic or local healing compromise factors present. Local factors include traumatic arthritis with multiple previous incisions, extensive scarring, lymphodema, poor vascular perfusion, and excessive local adipose deposition. Systemic compromising factors include diabetes, rheumatic diseases, renal or liver disease, immunocompromise, steroids, smoking, and poor nutrition. Low serum albumin, total lymphocyte count, and low transferrin increase WHD. In high risk situations the surgeon should encourage positive patient choices such as smoking cessation and nutritional supplementation to modify healing responses. Use of tourniquet in obese patients also increases WHD. Careful planning of incisions, particularly in patients with scarring or multiple previous operations, is productive. Around the knee the vascular viability is better in the medial flap. Thusly, use the most lateral previous incision, do minimal undermining, and handle tissue meticulously. We do all potentially complicated TKA's without tourniquet to enhance blood flow and tissue viability. The use of perioperative anticoagulation will increase wound problems. If wound drainage or healing problems do occur, immediate action is required. Deep sepsis can be ruled out with a joint aspiration and cell count (less than 2500), differential (less than 60% polys), and negative culture and sensitivity. All hematomas should be evacuated and necrosis or dehiscence should be managed by debridement to obtain a live wound


Orthopaedic Proceedings
Vol. 97-B, Issue SUPP_13 | Pages 61 - 61
1 Nov 2015
Jones R
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Obtaining primary wound healing in Total Joint Arthroplasty (TJA) is essential to a good result. Wound healing problems can occur and the consequences can be devastating to the patient and to the surgeon. Determination of the host healing capacity can be useful in predicting complications. Cierney and Mader classified patients as Type A: no healing compromises and Type B: systemic or local healing compromises factors present. Local factors include traumatic arthritis with multiple previous incisions, extensive scarring, lymphedema, poor vascular perfusion, and excessive local adipose deposition. Systemic compromising factors include diabetes, rheumatic diseases, renal or liver disease, immunocompromise, steroids, smoking, and poor nutrition. In high risk situations the surgeon should encourage positive patient choices such as smoking cessation and nutritional supplementation to elevate the total lymphocyte count and total albumin. Careful planning of incisions, particularly in patients with scarring or multiple previous operations, is productive. Around the knee the vascular viability is better in the medial flap. Thusly, use the most lateral previous incision, do minimal undermining, and handle tissue meticulously. We do all potentially complicated TKAs without tourniquet to enhance blood flow and tissue viability. The use of peri-operative anticoagulation will increase wound problems. If wound drainage or healing problems do occur immediate action is required. Deep sepsis can be ruled out with a joint aspiration and cell count [less than 2500], differential [less than 60% polys], and negative culture and sensitivity. All hematomas should be evacuated and necrosis or dehiscence should be managed by debridement to obtain a live wound


Orthopaedic Proceedings
Vol. 95-B, Issue SUPP_29 | Pages 70 - 70
1 Aug 2013
Olesak M
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Material and methods:. Fifteen patients sustaining high energy Gustilo 3B injuries of the tibia were treated from 2003 to 2009 with initial debridement followed by application of an external fixation device allowing immediate acute shortening of the bone gap. The bone defects ranged from 3 cm to 5 cm. Wound management was achieved with a vacuum assisted closure device (VAC) until granulation tissue covering the exposed bone made coverage with split skin grafting possible. A delayed progressive lengthening procedure was used to equalize the leg length discrepancy after wound cover was achieved. Results:. The mean age of the 15 patients was 30 years and treatment times varied from 4 to 12 months. All fractures united with acceptable alignment and equalization of the leg length discrepancy. One patient required repeat procedures for a pin site infection by changing a wire. There was no deep sepsis. Conclusion:. This method is a satisfactory and safe alternative for the acute management of the compound wound, when plastic surgery skills are either unavailable or flap cover is contraindicated in the presence of sepsis or as a salvage procedure following flap failure. Wire placement needs to be carefully planned in order to accommodate initial VAC placement, followed by final definitive fixation after wound cover has been achieved


Orthopaedic Proceedings
Vol. 94-B, Issue SUPP_XXIII | Pages 104 - 104
1 May 2012
Ghan F Costi K Selby M Standen A
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This paper reports the clinical outcomes and survivorship of a prospective series of Advantim cementless TKR performed at the RAH between 1993 and 2005. There were 210 knees in 176 patients. All procedures were performed or supervised by a single surgeon. All patients were followed up at regular intervals, up to 15 years later, with Knee Society Cinical Rating System and X-Rays. No patients were lost to follow-up. The knee rating improved from a median of 47 to 90. The median range of motion was 0–100. At 11 years the survivorship of the tibial component was 95.5% and femur was 93.7%. There were two major revisions and three minor revisions for polyethelene exchange. There was no deep sepsis. There was no knee stiffness requiring arhrolysis or manipulation. No screw osteolysis observed. Advantim was the best perfoming TKR in the AOA registry in 2008 with 0.3 revisions per 100 observed component years. Conclusions. Advantim has excellent clinical outcomes and survivorship. Screws provide rigid initial and ongoing stability to tibial implant-bone construct. Screw osteolysis should not be a concern in a good implant design


Orthopaedic Proceedings
Vol. 95-B, Issue SUPP_23 | Pages 6 - 6
1 May 2013
Fagg JA Mills E Royston SL
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Purpose of Study. We intended to determine our rates of deep infection and non-union in severe open tibial fractures treated at our institution with Ilizarov frames. Methods. We retrospectively reviewed the case notes and radiographs of sixty consecutive cases of severe (Gustillo-Anderson Grade III) open fractures of the tibia treated in our tertiary referral unit with the ‘Flap and Frame’ technique. This technique involves early aggressive soft tissue and bone debridement and temporary skeletal stabilisation, followed by soft tissue coverage and then, when the soft tissues have settled, definitive skeletal stabilisation with the Ilizarov frame. The primary outcome measures were the presence of deep infection, occurence of union with the index frame, and any requirement for secondary amputation. Results. Mean average age was 43.3 years (range 16–89). None had neurovascular injuries requiring repair, while three quaters required soft tissue coverage procedures. Half of the fractures had significant bone loss following debridement, with a mean average loss of 28.1 mm (range 5–125). Mean followup was 10.3 months. The deep sepsis rate was 1.7 percent, or 5 percent including cases with significant soft tissue infection but no confirmed bone infection, with a 5 percent non-union rate. Conclusion. In our centre management of severe open fractures of the tibia treated with the ‘Flap and Frame’ technique, with Ilizarov, fixation achieves rates of deep infection and union which compare favourably with previously reported results


Orthopaedic Proceedings
Vol. 95-B, Issue SUPP_22 | Pages 69 - 69
1 May 2013
Jones R
Full Access

Obtaining primary wound healing in Total Joint Arthroplasty (TJA) is essential to a good result. Wound healing problems can occur and the consequences can be devastating to the patient and to the surgeon. Determination of the host healing capacity can be useful in predicting complications. Cierney and Mader classified patients as Type A: no healing compromises and Type B: systemic or local healing compromises factors present. Local factors include traumatic arthritis with multiple previous incisions, extensive scarring, lymphedema, poor vascular perfusion, and excessive local adipose deposition. Systemic compromising factors include diabetes, rheumatic diseases, renal or liver disease, immune compromise, steroids, smoking, and poor nutrition. In high risk situations the surgeon should encourage positive patient choices such as smoking cessation and nutritional supplementation to elevate the total lymphocyte count and total albumin. Careful planning of incisions, particularly in patients with scarring or multiple previous operations, is productive. Around the knee the vascular viability is better in the medial flap. Thus, use the most lateral previous incision, do minimal undermining, and handle tissue meticulously. We do all potentially complicated TKAs without tourniquet to enhance blood flow and tissue viability. The use of perioperative anticoagulation will increase wound problems. If wound drainage or healing problems do occur immediate action is required. Deep sepsis can be ruled out with a joint aspiration and cell count, and negative culture and sensitivity. All hematomas should be evacuated and necrosis or dehiscence should be managed by debridement to obtain a live wound. Options available for coverage of complex wound problems include myocutaneous flaps, pedicled skin flaps, and skin grafts. Wet, occlusive dressings and wound VACs encourage epithelisation of chronic wounds


Orthopaedic Proceedings
Vol. 98-B, Issue SUPP_4 | Pages 3 - 3
1 Jan 2016
Shah A
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Introduction. Various implant designs and bearing surfaces are used in TKR. The use of All Poly Tibia and poly moulded on Tibial metal base plate has been in practice since long. Recently due to the reports on wear and osteolysis in modular articulations, these components have generated significant interest. Aim. To report early medium term results in elderly (>70 years) patients. Method. Study of 130 cases done between 2005–2009. All cases were performed by the author. Inclusion Criteria:. Patients with physiological age > 70 years. Patients with low functional demand. Good bone quality. Exclusion Criteria: Inflammatory arthropathy. Osteoporosis and poor bone quality. High functional demand. All Poly Tibial component/ Moulded Metal back Tibia implantations were performed. A PS design was used in all cases fixed with CMW 1 gentamicin cement. Results. 12 cases were lost to follow up. 11 patients deceased due to medical conditions. This left us with 107 cases at the time of the last follow up. Mean age at index surgery was 72.5 years.(70–91 years). Preop KSS average was 42 (25–62). Post operative at the latest Follow up was 89 (68–97). Of 107 cases there were 4 revisions - two for deep sepsis and two for periprosthetic fractures. There were no revisions for aseptic loosening or osteolysis. All 103 cases are performing well functionally and clinically. 19 cases have a nonprogressive radiolucent line beneath the Tibial component. Discussion. Use of Monobloc Tibia is somewhat controversial. The first Total condylar Knee was an all poly design in early 70s. 1. The monobloc tibia eliminates backside wear. The overall thickness of polyethylene in this implant is 2 to 4mm thicker in allpoly tibia design. The metal base plate with compression moulded polyethylene dissipates stresses evenly in osteopaenic bones. The polywear and osteolysis are two most important factors for aseptic loosening. If Symptomatic, loosening warrants a revision surgery. Metal back fixed bearing implant has a disadvantage that it wears from both the surfaces. The highly polished trays are supposed to reduce the wear but it is too early for a statistically significant conclusion. Functionally low demand patients have lesser stresses as compared to their counterparts. The surgical technique for insertion of these implants is slightly demanding as compared to modular implants. The combination of perfect alignment and soft tissue balance creates an environment for a successful TKR. The choice of Monobloc Tibial component for functionally low demand age group patients reduce the chances of premature wear and osteolysis. In elderly patients the implant should outlive the patient. Here it is observed that at early medium term (5 to 9 yr.s) aseptic loosening and subsequent revision chances are low. The Monobloc Tibial component is cheaper as compared to its metal back counterpart. Conclusion. An excellent clinical result in our hands for this group of patients supports the continued use of this implant strongly


Orthopaedic Proceedings
Vol. 98-B, Issue SUPP_4 | Pages 42 - 42
1 Jan 2016
Tadros BJ Tandon T Gee C Rao B
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Background. Hospital acquired MRSA is globally endemic and is a leading cause of surgical site infection (SSI). Of great concern is the emergence of community acquired MRSA (CA MRSA) with its unique virulence characteristics. Infected hip or knee prostheses due to MRSA are associated with multiple reoperations and prolonged hospital stay. Few studies have been done to assess for risk of SSI in MRSA carriers undergoing elective orthopaedic surgery following decolonisation. However in these studies, the eradication status was not confirmed prior to proceeding for surgical intervention. Aim. The purpose of the study was to evaluate the incidence of SSI in MRSA carriers undergoing elective hip and knee arthroplasty, who had confirmed eradication of MRSA carrier status and to compare it with incidence of SSI in non MRSA carriers. Material and Methods. This is a retrospective analysis of 6613 patients who underwent elective hip (3347) and knee arthroplasty (3266) at our institution between January 2008 and August 2012. A cohort of patients who were preoperatively colonised with MRSA was identified. These patients were offered decolonisation protocol and successful eradication was ensured prior to surgery. The MRSA negative patients served as the control group and we looked into the incidence of SSI in both groups up to one year after surgery. Categorical variables were investigated between groups using chi-squared tests and p value of < 0.05 was taken as significant. Results. Out of 6613 patients, MRSA colonisation was observed in 83 patients (a mean age of 76 years with a M:F ratio of 1:1.2) pre-operatively with a colonisation rate of 1.3%. A total of 79 patients had confirmed eradication of carrier status prior to surgical intervention. Of these 38 were THRs and 41 were TKRs. Total number of MRSA negative patients were 6530 with 3307 THRs and 3223 TKRs in control group. Teicoplanin was used for antibiotic prophylaxis in these patients. 5 of 79 patients had “deep SSI” within 1 year of surgery giving an infection rate of 6.32%. There were 2 MRSA infections in hip replacements with an infection rate of 5.26%. There were 2 MRSA and 1 MSSA infection in TKR resulting in an infection rate of 7.31%. These patients did not belong to the “high-risk” group for MRSA colonisation. A significant statistical difference in infection rates from MRSA negative control group was noted, which had a deep sepsis rate of 1.17% (p value − 0.03) in THRs and 0.87% in TKRs (p value − 0.0016). Conclusions and Clinical Implication. In spite of a selective treatment program for carriers and confirmed eradication in terms of achieving a reduction in the rate of SSI, there is still a significantly increased risk of SSI in MRSA colonised patients undergoing hip and knee replacements. Also, should infection develop, MRSA is the most likely causative organism. Patients should be made aware of this higher risk of infection and the serious consequences of developing MRSA SSI


Orthopaedic Proceedings
Vol. 94-B, Issue SUPP_II | Pages 7 - 7
1 Feb 2012
Malik M Bayat A Jury F Oliver W Kay P
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The Osteoprotegerin/RANK/RANKL system has been implicated in the biological cascade of events initiated by particulate wear debris and bacterial infection resulting in periprosthetic bone loss around loosened total hip arthroplasties (THA). Individual responses to such stimuli may be dictated by genetic variation and we have studied the effect of single nucleotide polymorphisms (SNPs) within these genes. We performed a case control study of the Osteoprotegerin, RANK and RANKL genes for possible association with deep sepsis or aseptic loosening. All patients included in the study were Caucasian and had had a cemented Charnley THA and polyethylene acetabular cup. Cases consisted of 91 patients with early aseptic loosening and 71 patients with microbiological evidence at surgery of deep infection. Controls consisted of 150 THAs that were clinically asymptomatic for over 10 years and demonstrated no radiographic features of aseptic loosening. DNA samples from all individuals were genotyped using Taqman allelic discrimination. The A allele (p<0.001) and homozygous genotype A/A (p<0.001) for the OPG-163 SNP were highly associated with aseptic failure. Additionally, the RANK-575 (C/T SNP) T allele (p=0.004) and T/T genotype (p=0.008) frequencies were associated with aseptic failure. No statistically significant relationship was found between aseptic loosening and the OPG- 245 or OPG-1181 SNPs. When the septic group was compared to controls, the frequency of the A allele (p<0.001) and homozygous genotype A/A (p<0.001) for the OPG-163 SNP were statistically significant. No statistically significant relationship was found between septic failure and the OPG- 245, OPG-1181 or RANK-575 SNPs. Aseptic loosening and possibly deep infection of THA may be under genetic influence to candidate susceptibility genes. SNP markers may serve as predictors of implant survival and aid pharmacogenomic prevention of THA failure


Orthopaedic Proceedings
Vol. 95-B, Issue SUPP_19 | Pages 16 - 16
1 Apr 2013
Shah A Badge R Joshi Y Choudhary N Sochart D
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Introduction. Negative remodelling of the femoral cortex in the form of calcar resorption due to stress shielding and cortical hypertrophy at the level of the tip of the implant, due to distal load transfer, is frequently noted following cemented total hip replacement, most commonly with composite beam implants, but also with polished double tapers. The C-stem polished femoral component was designed with a third taper running from lateral to medial across and along the entire length of the implant, with the aim of achieving more proximal and therefore more natural loading of the femur. The hoop stresses generated in the cement mantle are transferred to the proximal bone starting at the calcar, which should theoretically minimise stress-shielding and calcar resorption, as well as reducing distal load transfer, as signified by the development of distal femoral cortical hypertrophy. Materials/Methods. We present the results of a consecutive series of 500 total hip replacements performed between March 2000 and December 2005 at a single institution, using a standard surgical technique and third generation cementing with Palacos-R antibiotic loaded cement. Data was collected prospectively and the patients remain under annual follow-up. 500 arthroplasties were performed on 455 patients with an average age of 68.3 years (23–92). 77 patients have died (73 arthroplasties) and the average duration of follow-up for the entire series is 81 months (52–124). Results. Only 2 femoral implants have been revised - one for deep sepsis and the other as part of a revision procedure for a loose acetabulum, although the femoral component itself was not loose. One implant is currently loose following a periprosthetic fracture treated by internal fixation, but none of the other remaining implants demonstrates any progressive radiolucencies in any Gruen zones, or any features suggestive of current or future loosening. Rounding of the calcar has been observed, but there have been no cases with obvious loss of calcar height and no cases of distal femoral cortical hypertrophy. Conclusion. The C-stem femoral component has therefore performed well in clinical practice and the objective of eradicating negative bone remodelling has been achieved. The study is ongoing


Orthopaedic Proceedings
Vol. 94-B, Issue SUPP_XXV | Pages 220 - 220
1 Jun 2012
Sochart D Chaudhary N
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Negative remodelling of the femoral cortex in the form of calcar resorption due to stress-shielding, and femoral cortical hypertrophy at the level of the tip of the implant due to distal load transfer, is frequenly noted following cemented total hip replacement, most commonly with composite beam implants, but also with polished double tapered components. The C-stem polished femoral component was designed with a third taper running from lateral to medial across and along the entire length of the implant, with the aim of achieving more proximal and therefore more natural loading of the femur. The implant is designed to subside within the femoral cement mantle utilising the cement property of creep, generating hoop stresses, which are transferred more proximally to the femoral bone, starting at the level of the medial calcar. The intention is to load the proximal femur minimising stress-shielding and calcar resorption, as well as reducing distal load transfer as signified by the lack of distal femoral cortical hypertrophy. We present the results of a consecutive series of 500 total hip replacements using C-stem femoral components, performed between March 2000 and December 2005 at a single institution. Data was collected prospectively and all patients remain under annual follow-up by a Specialist Arthroplasty Practitioner. The operations were performed using a standard surgical technique with third generation cementing using Palacos-R antibiotic loaded cement. 500 arthroplasties were performed on 455 patients with an average age at the time of surgery of 68.3 years (23-92). There were 282 (62%) female and 173 (38%) male patients with osteoarthritis being the predominant diagnosis. 77 patients have died (73 hips) and the average duration of follow-up for the entire series is 81 months (52-124). Only 2 femoral implants have been revised - one for deep sepsis and the other as part of a revision procedure for a loose acetabulum, although the femoral component itself was not loose. One implant is currently loose following a periprosthetic fracture treated by internal fixation, but none of the remaining implants demonstrates any progressive radiolucencies in any Gruen zones or any features suggestive of current or future loosening. Calcar rounding has been observed, but there have been no cases with obvious loss of calcar height and no cases of distal femoral cortical hypertrophy. The C-stem femoral component has therefore performed well in clinical practice and the objective of eradicating negative bone remodelling has been achieved. The study is ongoing


Orthopaedic Proceedings
Vol. 94-B, Issue SUPP_XXI | Pages 58 - 58
1 May 2012
N. KK H. BT R. M P.V. G
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The straddle fractures represent a distinct anatomical pattern of pelvic trauma. Their specific clinical characteristics, associated injuries and clinical outcome remain mostly underreported and ambiguous. Over a 3-year period all straddle fractures were identified from a prospective database of a tertiary referral hospital. For all cases, excluding children < 16 years and pathologic fractures, demographic characteristics, associated trauma, ISS-2005, transfusion requirements, surgical procedures, post-operative course, complications and clinical outcome were recorded over a median follow-up of 19 months (7-36). All fractures were classified by the two senior authors separately. Of 280 pelvic fractures, 31(11%) straddle fractures were identified. The median age was 38 years (17-88) and the male/female ratio was 1.38. Half of them were classified as lateral-compression (51.6%), 19.4% as anteroposterior-compression, and 29% combined mechanism of injury. 9 cases had an intra-articular extension to one or both acetabula. Median ISS was 21 (9-57), while 71% had a serious (AIS>2) associated thoracic injury, 48.4% head injury, 38.7% abdominal injury, 51.6%- lower extremity fracture, and 38.7% significant urogenital injuries. Six underwent acute embolisation, and the mean transfusion rates over the initial 72hrs were 7.5 units-cRBC, 2.3 units-FFP, 0.5 units-PLTs. All cases were treated operatively, either with ORIF (14 cases), closed reduction and percutaneous screw fixation (10 cases), while an external fixator was used in 21 cases. The median length of stay was 21 days (1-106). The mortality rate was 6.5% (one on the day of admission and another after 15 days at the ICU). Eight superficial infections, 2 deep sepsis of pfannestiel wounds, as well as 1 asymptomatic nonunion of an inferior pubic rami were recorded. 5 cases underwent further surgery for late urogenital repair and 4 cases have chronic incontinence and sexual dysfunction symptoms. Straddle fractures represent a severe type of pelvic trauma, associated with severe mostly thoracic, head and extremity trauma, severe urogenital complications, and suggest pelvic ring instability that requires surgical stabilisation in the acute setting. They are easily identifiable at the initial radiological investigations and should alert the clinician for multidisciplinary assessment and early referral


Orthopaedic Proceedings
Vol. 94-B, Issue SUPP_II | Pages 92 - 92
1 Feb 2012
Giannoudis P Allami M Harwood P Macdonald D Dimitriou R Pape H Krettek C
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We aimed to investigate the treatment and outcome of patients over 65 years of age with tibial Pilon fracture. Patients were treated by primary open reduction and internal fixation or external fixation (EF) as determined by local soft tissue conditions. Patient course, incidence of radiological osteoarthritis and functional outcome using the SF-36 questionnaire were recorded. All patients were evaluated serially until discharge from final follow-up. The mean follow-up time was 28 months (12-45). Statistical analysis was performed using Analyse-it(tm) software for Excel. In total 25 patients were studied. Two patients died before completion of treatment and were excluded from the final analysis. Therefore, 23 patients (10 male) were included with a mean age of 70.9 years (range 66-89) and a mean ISS of 10.25 (range 9-22). There were 4 grade IIIb open injuries. Three patients suffered superficial tibial wound infection. Two patients underwent early secondary amputation due to deep bone sepsis within 8 weeks of injury. One patient in the ORIF group underwent primary arthrodesis, which was subsequently revised due to non-union. 3 patients underwent secondary bone grafting to enhance healing, performed at 2, 6 and 9 weeks. 2 patients with metal work failure underwent subsequent revision of ORIF and progressed to union; the mean time to union was 33.8 weeks. At final follow-up 7 (28%) patients had radiological features of osteoarthritis but none had symptoms severe enough to warrant ankle arthrodesis. There were significant differences from the USA norm in physical function score, role physical score, and physical component score, (p< 0.01). Conclusion/Significance. In older patients local complications are relatively common and clinical vigilance must be maintained in order to allow appropriate intervention during their post-operative course. Despite the incidence of radiological post-traumatic arthrosis, none of the patients progressed to ankle fusion