INITIAL RESULTS USING A NEW HUMERAL FIXATOR PLATE (THE “PLANTTAN” PLATE) FOR FRACTURES OF THE PROXIMAL HUMERUS

Abstract

Aims: To assess shoulder function and pain following open reduction and internal fixation of displaced 2, 3 & 4 part fractures of the proximal humerus, using a new fixation plate designed to provide rotation and angle stability.

Methods: Patients treated by open reduction and internal fixation with a PlantTan plate (PTP) in our institution are currently being followed-up for a period of 2 years from time of surgery. Post-operatively Constant-Murley (0–100) and Visual analogue (0–100) scoring systems are being used to assess function and pain at 2, 6, 12, and 24 months post surgery. Complications have been carefully recorded.

Results: Currently 24 patients have been treated with a PTP. Results to 6 months post surgery are presented here. Mean patient age is 65 (31–89), 11 male, 13 female. Three were undertaken for non-union and 21 for acute fractures. At 2 months post surgery mean Constant-Murley Score (CMS) was 24 (12–49) on the fractured side compared to 89 (80–95) on the uninjured shoulder, with a mean Visual Analogue Score (VAS) of 37 (1–82). At 6 months mean CMS was 49 (28–75) for the fractured side compared to 88 (71–100) for the uninjured side, with a mean VAS of 26 (2–69). Three patients have died during the follow-up period; all deaths have been confirmed, by the coroner, as being unrelated to the procedure. Screws have backed out in 3 (12.5%) patients with 1 requiring implant removal and 1 requiring revision. There has been 1 (4.2%) case of frozen shoulder requiring MUA and 3 (12.5%) superficial wound infections. All 3 infections have resolved following a course of oral antibiotics.

Conclusion: We believe the PTP may prove to be a powerful tool in the management of proximal humeral fractures, however further evaluation including long-term follow-up is required. We aim to report on this in the future.