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The Journal of Bone & Joint Surgery British Volume
Vol. 87-B, Issue 9 | Pages 1182 - 1186
1 Sep 2005
Sher JL Reed MR Calvert P Wallace WA Lamb A


Orthopaedic Proceedings
Vol. 87-B, Issue SUPP_II | Pages 163 - 163
1 Apr 2005
Di Fabio S Malone A Calvert P Lambert S Bayley I
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Aim. To identify and quantify the reasons for failure of primary shoulder arthroplasty.

Materials. Seventy-nine Revision Shoulder Arthroplasties (RSA) in 75 patients were performed between January 1990 and July 2003. Twelve patients underwent more than one revision. Five patients were lost to follow-up. The indications for PSA (38 total shoulder arthroplasties, 37 hemiarthroplasties) were trauma (22), osteoarthritis (13), rheumatoid arthritis (11), avascular necrosis (9), cuff tear arthropathy (9), traumatic arthritis (5), capsulorraphy arthropathy (4),and instability (2). Glenoid and humeral bone stock, and rotator cuff integrity were analysed and the reasons for failure of the index procedure were determined.

Results. The median interval between PSA and RSA was 46 months (1 month to 22.8 years; mean 28 months). Thirty-six (58.1%) PSAs (of which 26 of 37 hemiarthroplasties (70%)) failed in the first three years. Failure of the PSA was caused by rotator cuff deficiency (24), glenoid bone erosion (19), glenoid component loosening (25), humeral bone erosion (3), infection of the implant (3) and periprosthetic fracture (1). Revision of a loose humeral component was performed in 6 cases, but 31 humeral components were revised in order to deal with glenoid or rotator cuff conditions.

Conclusion. When faced with a limited surgical armamentarium or tactic, there is a predictable rate of failure of shoulder replacement involving the interaction of the failed or failing rotator cuff and the evolution of glenoid deficiency.


Orthopaedic Proceedings
Vol. 87-B, Issue SUPP_II | Pages 163 - 164
1 Apr 2005
Soufali P Malone A Calvert P Lambert S Bayley I
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Aim: To evaluate the role and outcome of FFTSA in shoulders with arthritis and/or irreparable rotator cuff tears.

Materials. The records of 60 consecutive patients with FFTSA were retrospectively reviewed. Primary FFTSA (group 1) was performed in 29 (48%), revision FFTSA (group 2) in 26 (43%), and re-revision FFTSA (group 3) in 5 (9%) patients. The mean age at primary FFTSA was 70 years (37 – 82), and at revision FFTSA, 67.6 years (38 – 89) at a mean interval of 38 months after primary intervention. In re-revision FFTSA the interval between the primary (mean age 64 years) and final (mean age 68.4 years) interventions varied from 20 to 148 months. Primary FFTSA was performed for cuff arthropathy in 18 (62%) and after trauma in 5 (17%): all 29 patients had rotator cuff insufficiency. Revision FFTSA was performed for failure of humeral head replacement (HHR) after fracture in 17 (65%) of which 14 had rotator cuff insufficiency. All those in group 3 had rotator cuff insufficiency. The dominant indication for intervention was pain in 59 cases. The glenoid component was uncemented in all cases. The humeral component was cemented in 27 of the 29 Primary FFTSA. CADCAM variations of the standard humeral design were used in 8 cases.

Results. At a mean follow-up of 25 months, 81% of primary FFTSA had no or mild pain, and 87.5% were satisfied or very satisfied with the outcome: both outcomes were independent of the original rotator cuff defect. At a mean follow-up of 41 months, 69% of revision FFTSA had no or mild pain, and 68 % were satisfied or very satisfied: the least satisfied patients were those in which a previous HHR for fracture had been the primary intervention. There were 3 complications in group 1, 2 in group 2, and 2 in group 3. In 4 patients with deficient deltoid function, 3 were satisfied with the eventual outcome

Conclusion. FFTSA has a clear role in the management of shoulders in which the rotator cuff has failed and a joint replacement is required for pain relief.


Orthopaedic Proceedings
Vol. 87-B, Issue SUPP_II | Pages 163 - 163
1 Apr 2005
Malone A Jaggi A Calvert P Lambert S Bayley I
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Aim: To demonstrate that inappropriate sequencing of activation of shoulder muscles can cause shoulder instability.

Methods. The records of 933 cases of recurrent shoulder instability referred to a specialist shoulder service between 1993 and 2003 were reviewed. All patients were assessed clinically. Muscle patterning abnormality (Bayley 1986) was identified in 428 patients (46%). Confirmatory functional electromyography was performed in 166 (36%). Inappropriate pectoralis major activation was identified in 73% of anterior instability. In posterior instability, inappropriate activation of latissimus dorsi and anterior deltoid was present in 72% and infra-spinatus was suppressed in 19%. Arthroscopic assessment was performed in 141 (33%), identifying structural lesions of instability in 86 (20%).

All patients diagnosed with muscle patterning disorder received specilalist physical therapy using biofeedback. Symptomatic improvement or stability was achieved in 76% of patients with anterior instability but with no previous surgery, and in 53% of patients with previous surgery. Posterior instability was eliminated in 85% of cases.

Conclusion. Muscle patterning abnormalities contribute to recurrent instability of the shoulder in 46% of cases. The success of physical therapy in these patients is high.


The Journal of Bone & Joint Surgery British Volume
Vol. 82-B, Issue 5 | Pages 719 - 723
1 Jul 2000
Takwale VJ Calvert P Rattue H

We diagnosed 50 patients (58 shoulders) with a mean age at presentation of 17.3 years, as having involuntary positional instability of the shoulder. They were managed by a programme consisting of a careful explanation, analysis of abnormal muscle couples and then muscle retraining carried out by a specialist physiotherapist. The mean follow-up was two years. Six shoulders had a poor result, but 52 were graded as good to excellent. Nine patients (12 shoulders) relapsed and required further episodes of retraining.

In our experience, involuntary positional instability of the shoulder causes symptoms which interfere with normal activities; these can be controlled by a treatment plan of retraining of the muscle pattern with functional benefit. Only 19 of the patients were referred with a diagnosis of positional instability. There should be more awareness of this rather uncommon condition. Surgery is not indicated in these patients.


The Journal of Bone & Joint Surgery British Volume
Vol. 77-B, Issue 1 | Pages 153 - 154
1 Jan 1995
Hall R Calvert P


The Journal of Bone & Joint Surgery British Volume
Vol. 74-B, Issue 3 | Pages 329 - 331
1 May 1992
Calvert P


The Journal of Bone & Joint Surgery British Volume
Vol. 73-B, Issue 2 | Pages 330 - 334
1 Mar 1991
Bridle S Patel A Bircher M Calvert P

We have prospectively compared the fixation of 100 intertrochanteric fractures of the proximal femur in elderly patients with random use of either a Dynamic Hip Screw (DHS) or a new intramedullary device, the Gamma nail. We found no difference in operating time, blood loss, wound complications, stay in hospital, place of eventual discharge, or the patients' mobility at final review. There was no difference in failure of proximal fixation: cut-out occurred in three cases with the DHS, and twice with the Gamma nail. However, in four cases fracture of the femur occurred close to the Gamma nail, requiring further major surgery. In the absence of these complications, union was seen by six months in both groups.


The Journal of Bone & Joint Surgery British Volume
Vol. 72-B, Issue 5 | Pages 928 - 929
1 Sep 1990
Allen C Calvert P


The Journal of Bone & Joint Surgery British Volume
Vol. 71-B, Issue 2 | Pages 246 - 251
1 Mar 1989
Calvert P Edgar M Webb P

We reviewed 47 patients with neurofibromatosis and dystrophic spinal deformities; 32 of these patients had been untreated for an average of 3.6 years and in them the natural history was studied. The commonest pattern of deformity at the time of presentation was a short angular thoracic scoliosis, but with progression the angle of kyphosis also increased. Deterioration during childhood was usual but its rate was variable. Severe dystrophic changes in the apical vertebrae and in particular anterior scalloping have a poor prognosis for deterioration. The dystrophic spinal deformity of neurofibromatosis requires early surgical stabilisation which should be by combined anterior and posterior fusion if there is an abnormal angle of kyphosis or severely dystrophic apical vertebrae. Some carefully selected patients can be treated by posterior fusion and instrumentation alone.


The Journal of Bone & Joint Surgery British Volume
Vol. 69-B, Issue 4 | Pages 551 - 555
1 Aug 1987
Calvert P August A Albert J Kemp H Catterall A

We report the clinical and radiographic results of the Chiari pelvic osteotomy in 49 hips (45 patients) at an average of 14 years after operation. Of these hips, over half had minimal or no pain, had good or excellent results as assessed by the Harris hip score, and could walk at least three miles; three-quarters, however, had a positive Trendelenburg sign. A younger age at operation and a painless hip with no radiographic evidence of degeneration before operation were associated with a higher hip score at review. The percentage of hips without degenerative changes fell from 68% before operation to 15% at final review. There were no major complications and it was found that a Chiari osteotomy need not interfere with normal childbirth.


The Journal of Bone & Joint Surgery British Volume
Vol. 68-B, Issue 1 | Pages 147 - 150
1 Jan 1986
Calvert P Packer N Stoker D Bayley J Kessel L

Double-contrast shoulder arthrograms were performed in 20 patients at an average of 30 months after operative repair of a torn rotator cuff. In 18 out of 20 shoulders the contrast medium leaked into the subacromial bursa indicating a defect in the rotator cuff. Despite this, 17 patients had complete relief of pain and 15 had a full range of shoulder elevation. The results suggest that a completely watertight closure is not essential for a good functional result, and that arthrography may not be helpful in the investigation of failure of repair.


The Journal of Bone & Joint Surgery British Volume
Vol. 65-B, Issue 2 | Pages 171 - 175
1 Mar 1983
Packer N Calvert P Bayley J Kessel L

The results of 63 operative repairs of chronic tears of the rotator cuff in 61 patients are reviewed retrospectively; the mean follow-up was 32.7 months. Fifty-four patients presented with symptoms of persistent pain and seven patients with gross loss of movement. All the patients had failed to respond to conservative treatment. Results were assessed in terms of relief of pain, restoration of movement, the patients' ability to return to work and whether they were satisfied with the results. Overall, a good result in terms of relief of pain was achieved in 40 shoulders. In 31 shoulders (30 with pain and one without pain) the operation included particular measures to decompress the subacromial space; 26 of the patients achieved relief of pain which was significantly better than in those patients whose operation did not include a decompression. The complications and failures are discussed. It is suggested that operative repair of the chronically torn rotator cuff of the shoulder is a worthwhile operation and that the operation should include an adequate decompression of the subacromial space.