The bony shoulder stability ratio (BSSR) allows for quantification of the bony stabilisers Four polyethylene balls (radii: 19.1 mm to 38.1 mm) were used to mould four fitting sockets in four different depths (3.2 mm to 19.1mm). The SR was measured in biomechanical congruent and incongruent experimental series. The experimental SR of a congruent system was compared with the calculated SR based on the BSSR approach. Differences in SR between congruent and incongruent experimental conditions were quantified. Finally, the experimental SR was compared with either calculated SR based on the socket concavity or plastic ball radius.Objectives
Methods
Patients with recurrent anterior dislocation of the shoulder commonly have an anterior osseous defect of the glenoid. Once the defect reaches a critical size, stability may be restored by bone grafting. The critical size of this defect under non-physiological loading conditions has previously been identified as 20% of the length of the glenoid. As the stability of the shoulder is load-dependent, with higher joint forces leading to a loss of stability, the aim of this study was to determine the critical size of an osseous defect that leads to further anterior instability of the shoulder under physiological loading despite a Bankart repair. Two finite element (FE) models were used to determine the risk of dislocation of the shoulder during 30 activities of daily living (ADLs) for the intact glenoid and after creating anterior osseous defects of increasing magnitudes. A Bankart repair was simulated for each size of defect, and the shoulder was tested under loading conditions that replicate Aims
Patients and Methods
Aims
Patients and Methods
The aim of this study was to report the long-term outcome and
implant survival of the lateral resurfacing elbow (LRE) arthroplasty
in the treatment of elbow arthritis. We reviewed a consecutive series of 27 patients (30 elbows) who
underwent LRE arthroplasty between December 2005 and January 2008.
There were 15 women and 12 men, with a mean age of 61 years (25
to 82). The diagnosis was primary hypotrophic osteoarthritis (OA)
in 12 patients (14 elbows), post-traumatic osteoarthritis (PTOA)
in five (five elbows) and rheumatoid arthritis (RA) in ten patients
(11 elbows). The mean clinical outcome scores including the Mayo
Elbow Performance Score (MEPS), the American Shoulder and Elbow
Surgeons elbow score (ASES-e), the mean range of movement and the
radiological outcome were recorded at three, six and 12 months and
at a mean final follow-up of 8.3 years (7.3 to 9.4). A one sample Aim
Patients and Methods
Since long-term outcome of teres major tendon transfer surgery
for irreparable posterosuperior rotator cuff (RC) tears is largely
unknown, the primary aim of this study was to evaluate the long-term
outcome of the teres major transfer. We also aimed to report on
the results of a cohort of patients with a similar indication for
surgery that underwent a latissimus dorsi tendon transfer. In this prospective cohort study, we reported on the long-term
results of 20 consecutive patients with a teres major tendon transfer
for irreparable massive posterosuperior RC tears. Additionally,
we reported on the results of the latissimus dorsi tendon transfer
(n = 19). The mean age was 60 years (47 to 77). Outcomes included
the Constant score (CS), and pain at rest and during movement using
the Visual Analogue Scale (VAS).Aims
Patients and Methods
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.
Accurate characterisation of fractures is essential in fracture management trials. However, this is often hampered by poor inter-observer agreement. This article describes the practicalities of defining the fracture population, based on the Neer classification, within a pragmatic multicentre randomised controlled trial in which surgical treatment was compared with non-surgical treatment in adults with displaced fractures of the proximal humerus involving the surgical neck. The trial manual illustrated the Neer classification of proximal humeral fractures. However, in addition to surgical neck displacement, surgeons assessing patient eligibility reported on whether either or both of the tuberosities were involved. Anonymised electronic versions of baseline radiographs were sought for all 250 trial participants. A protocol, data collection tool and training presentation were developed and tested in a pilot study. These were then used in a formal assessment and classification of the trial fractures by two independent senior orthopaedic shoulder trauma surgeons.Objectives
Methods
Failed internal fixation of a fracture of the
proximal humerus produces many challenges with limited surgical options.
The aim of this study was to evaluate the clinical outcomes after
the use of a reverse shoulder arthroplasty under these circumstances.
Between 2007 and 2012, 19 patients (15 women and four men, mean
age 66 years; 52 to 82) with failed internal fixation after a proximal
humeral fracture, underwent implant removal and reverse shoulder arthroplasty
(RSA). The mean follow-up was 36 months (25 to 60). The mean American
Shoulder and Elbow Score improved from 27.8 to 50.1 (p = 0.019).
The mean Simple Shoulder Test score improved from 0.7 to 3.2 (p
= 0.020), and the mean visual analogue scale for pain improved from
6.8 to 4.3 (p = 0.012). Mean forward flexion improved from 58.7°
to 101.1° (p <
0.001), mean abduction from 58.7° to 89.1° (p
= 0.012), mean external rotation from 10.7° to 23.1° (p = 0.043)
and mean internal rotation from buttocks to L4 (p = 0.034). A major
complication was recorded in five patients (26%) (one intra-operative
fracture, loosening of the humeral component in two and two peri-prosthetic
fractures). A total of 15 patients (79%) rated their outcome as
excellent or good, one (5%) as satisfactory, and three (16%) as
unsatisfactory. An improvement in outcomes and pain can be expected when performing
a RSA as a salvage procedure after failed internal fixation of a
fracture of the proximal humerus. Patients should be cautioned about
the possibility for major complications following this technically
demanding procedure. Cite this article:
The aim of this study was to assess hypertrophy of the extra-articular
tendon of the long head of biceps (LHB) in patients with a rotator
cuff tear. The study involved 638 shoulders in 334 patients (175 men, 159
women, mean age 62.6 years; 25 to 81) with unilateral symptomatic
rotator cuff tears. The cross-sectional area (CSA) of the LHB tendon
in the bicipital groove was measured pre-operatively in both shoulders
using ultrasound. There were 154 asymptomatic rotator cuff tears
in the contralateral shoulder. Comparisons were made between those
with a symptomatic tear, an asymptomatic tear and those with no
rotator cuff tear. In the affected shoulders, the CSAs were compared
in relation to the location and size of the rotator cuff tear. Aims
Patients and Methods
Between 2002 and 2011, 81 patients with a traumatic total brachial
plexus injury underwent reconstruction by double free muscle transfer
(DFMT, 47 cases), single muscle transfer (SMT, 16 cases) or nerve
transfers (NT, 18 cases). They were evaluated for functional outcome and quality of life
(QoL) using the Disability of Arm, Shoulder and Hand questionnaire,
both pre- and post-operatively. The three groups were compared and
followed-up for at least 24 months.Aims
Methods
We retrospectively reviewed the outcomes of 33
consecutive patients who had undergone an extra-articular, total or
partial scapulectomy for a malignant tumour of the shoulder girdle
between 1 July 2001 and 30 September 2013. Of these, 26 had tumours
which originated in the scapula or the adjacent soft tissue and
underwent a classic Tikhoff–Linberg procedure, while seven with
tumours arising from the proximal humerus were treated with a modified
Tikhoff-Linberg operation. We used a Ligament Advanced Reinforcement
System for soft-tissue reconstruction in nine patients, but not
in the other 24. The mean Musculoskeletal Tumor Society score (MSTS) was 17.6
(95% confidence interval (CI) 15.9 to 19.4); 17.6 (95% CI 15.5 to
19.6) after the classic Tikhoff–Linberg procedure and 18.1 (95%
CI 13.8 to 22.3) after the modified Tikhoff–Linberg procedure. Patients
who had undergone a LARS soft-tissue reconstruction had a mean score
of 18.6 (95% (CI) 13.9 to 22.4) compared with 17.2 (95% CI 15.5
to 19.0) for those who did not. The Tikhoff–Linberg procedure is a useful method for wide resection
of a malignant tumour of the shoulder girdle which helps to preserve
hand and elbow function. The method of soft-tissue reconstruction
has no effect on functional outcome. Cite this article:
In 100 patients the fulcrum axis which is the line connecting the anterior tip of the coracoid and the posterolateral angle of the acromion, was used to position true anteroposterior radiographs of the shoulder. This method was then compared with the conventional radiological technique in a further 100 patients. Three orthopaedic surgeons counted the number of images without overlap between the humeral head and glenoid and calculated the amount of the glenoid surface visible in each radiograph. The analysis was repeated for intraobserver reliability. The learning curves of both techniques were studied. The amount of free visible glenoid space was significantly higher using the fulcrum-axis method (64 vs 31) and the comparable glenoid size increased significantly (8.56 vs 6.47). Thus the accuracy of the anteroposterior radiographs of the shoulder is impaired by using this technique. The intra and interobserver reliability showed a high consistency. No learning curve was observed for either technique.
Patient-specific glenoid guides (PSGs) claim an improvement in
accuracy and reproducibility of the positioning of components in
total shoulder arthroplasty (TSA). The results have not yet been
confirmed in a prospective clinical trial. Our aim was to assess
whether the use of PSGs in patients with osteoarthritis of the shoulder
would allow accurate and reliable implantation of the glenoid component. A total of 17 patients (three men and 14 women) with a mean age
of 71 years (53 to 81) awaiting TSA were enrolled in the study.
Pre- and post-operative version and inclination of the glenoid were
measured on CT scans, using 3D planning automatic software. During
surgery, a congruent 3D-printed PSG was applied onto the glenoid
surface, thus determining the entry point and orientation of the
central guide wire used for reaming the glenoid and the introduction
of the component. Manual segmentation was performed on post-operative
CT scans to compare the planned and the actual position of the entry
point (mm) and orientation of the component (°).Aims
Patients and Methods
The purpose of this study was to evaluate the
natural history of rheumatoid disease of the shoulder over an eight-year
period. Our hypothesis was that progression of the disease is associated
with a decrease in function with time. A total of 22 patients (44 shoulders; 17 women, 5 men, (mean
age 63)) with rheumatoid arthritis were followed for eight years.
All shoulders were assessed using the Constant score, anteroposterior
radiographs (Larsen score, Upward-Migration-Index (UMI)) and ultrasound
(US). At final follow-up, the Short Form-36, disabilities of the
arm, shoulder and hand (DASH) Score, erythrocyte sedimentation rate
and use of anti-rheumatic medication were determined. The mean Constant score was 72 points (50 to 88) at baseline
and 69 points (25 to 100) at final follow-up. Radiological evaluation
showed progressive destruction of the peri-articular structures
with time. This progression of joint and rotator cuff destruction
was significantly associated with the Constant score. However, at
baseline only the extent of rotator cuff disease and the UMI could
predict the Constant score at final follow-up. A plain anteroposterior radiograph of the shoulder is sufficient
to assess any progression of rheumatoid disease and to predict functional
outcome in the long term by using the UMI as an indicator of rotator
cuff degeneration. Cite this article:
In adults with brachial plexus injuries, lack
of active external rotation at the shoulder is one of the most common residual
deficits, significantly compromising upper limb function. There
is a paucity of evidence to address this complex issue. We present
our experience of isolated latissimus dorsi (LD) muscle transfer
to achieve active external rotation. This is a retrospective review
of 24 adult post-traumatic plexopathy patients who underwent isolated latissimus
dorsi muscle transfer to restore external rotation of the shoulder
between 1997 and 2010. All patients were male with a mean age of
34 years (21 to 57). All the patients underwent isolated LD muscle
transfer using a standard technique to correct external rotational
deficit. Outcome was assessed for improvement in active external rotation,
arc of movement, muscle strength and return to work. The mean improvement
in active external rotation from neutral was 24° (10° to 50°). The
mean increase in arc of rotation was 52° (38° to 55°). Mean power
of the external rotators was 3.5 Medical Research Council (MRC)
grades (2 to 5). A total of 21 patients (88%) were back in work by the time of
last follow up. Of these,
13 had returned to their pre-injury occupation. Isolated latissimus
dorsi muscle transfer provides a simple and reliable method of restoring
useful active external rotation in adults with brachial plexus injuries
with internal rotational deformity. Cite this article:
The April 2013 Shoulder &
Elbow Roundup360 looks at: biceps, pressure and instability; chronic acromio-clavicular joint instability; depression and shoulder pain; shoulder replacement and transfusion; cuff integrity and function; iatropathic plexus injury; the accuracy of acromio-clavicular joint injection; and tennis as a risk factor for tennis elbow.
Transfer of pectoralis major has evolved as the most favoured option for the management of the difficult problem of irreparable tears of subscapularis. We describe our experience with this technique in 30 patients divided into three groups. Group I comprised 11 patients with a failed procedure for instability of the shoulder, group II included eight with a failed shoulder replacement and group III, 11 with a massive tear of the rotator cuff. All underwent transfer of the sternal head of pectoralis major to restore the function of subscapularis. At the latest follow-up pain had improved in seven of the 11 patients in groups I and III, but in only one of eight in group II. The subjective shoulder score improved in seven patients in group I, in one in group II and in six in group III. The mean Constant score improved from 40.9 points (28 to 50) in group I, 32.9 (17 to 47) in group II and 28.7 (20 to 42) in group III pre-operatively to 60.8 (28 to 89), 41.9 (24 to 73) and 52.3 (24 to 78), respectively. Failure of the tendon transfer was highest in group II and was associated with pre-operative anterior subluxation of the humeral head. We conclude that in patients with irreparable rupture of subscapularis after shoulder replacement there is a high risk of failure of transfer of p?ctoralis major, particularly if there is pre-operative anterior subluxation of the humeral head.
