Abstract:
Purpose: This study was designed to evaluate clinical outcomes and complications following minimally invasive plate osteosynthesis (MIPO) with the proximal humeral internal locking system (PHILOS) for treating proximal humeral shaft fracture.
Patients and Methods: Between March 2012 and March 2013, 37 patients with unilateral proximal humeral shaft fractures were treated using the MIPO technique with the PHILOS through the transdeltoid approach. All fractures were closed with no associated injuries and classified as 2-part (n=13), 3-part (n=19), and 4-part (n=5), according to the Neer's classification. Patients were followed up for 16.9 months (range, 12– 24), radiologically and functionally. Postoperative complications and functional Constant Shoulder Score were used for evaluation.
Results: No intraoperative complications occurred. Postoperative complications included subacromial impingement in 3 patients. There was no deep infection, neurovascular damage, breakage or implant loosening. All fractures united in an average time of 10 (8–12) weeks. In terms of function, the Constant–Murley score was 89 points on average (range75–100). The range of motion of the involved shoulder was satisfactory, and pain-free in 84 % of patients.
Conclusions: Using the MIPO technique with the PHILOS plate through the transdeltoid approach is a valid and safe method of treating proximal humeral shaft fractures.