FURTHER RESULTS OF THE REVERSE GEOMETRY DELTA III TOTAL SHOULDER REPLACEMENT PROSTHESIS FOR FRACTURE SEQUELAE

Abstract

To study the outcome of complex proximal humeral fracture sequelae (Type 3 & 4) treated with the Delta III Total Shoulder Replacement (TSR) Prosthesis. This is a prospective outcome study involving 10 patients mean age (71.5 yrs). All patients failed conservative treatment of proximal humeral fractures. Mean time from injury to surgery was 10.5 (+/− 11.5) months. All patients underwent a Delta III TSR via McKenzie approach by a single surgeon. Patients were assessed clinically with Constant scores, asked whether they were satisfied, and radiologically with plain film radiographs. Since last review one patient has died. Mean time at follow up was 20.8 months post-operation (12 “32 months). Three patients had undergone early revision for dislocation. Since last review two patients have developed deep infection, one treated with washout and suction drain, one with removal of prosthesis. One patient has a clinical diagnosis of complex regional pain syndrome. Three patients are very happy with the outcome of surgery, one is happy, one unhappy and four very unhappy. The mean pre-operative Constant scores was 8.9 (2–15), at first review 44.4 (15–96) and now 35.8 (4–76). The mean pain score on a visual analogue scale (0–10) was 3.6 (0–10). Radiographs showed no progressive notching of the glenoid in any patient. Mean flexion was 93 degrees (10,170), mean abduction 61 degrees (10,100) and mean external rotation was “1 degrees (−20,20).

This is a new technique for treating proximal humeral fracture sequelae. Some individual results are excellent. There has been a high complication rate and a significant rate of poor results. At this time we cannot recommend the reverse geometry prosthesis for the treatment of proximal humeral fracture sequelae.