Clinical effect of using MultiLoc® nails to treat four-part proximal humeral fractures

OBJECTIVE: This study was performed to evaluate the clinical effect of MultiLoc® nails (DePuy Synthes, Raynham, MA, USA) on the treatment of four-part proximal humeral fractures (PHFs). METHODS: From January 2014 to January 2018, 32 patients with four-part PHFs were treated with intramedullary MultiLoc® nails in our hospital. The operation time, bleeding volume, postoperative X-ray findings, and fracture healing status were recorded and analyzed. At the end of follow-up, the clinical outcome was evaluated based on the visual analog scale (VAS) score, American Shoulder and Elbow Surgeons (ASES) shoulder score, Constant–Murley score (CMS), and occurrence of any complications. RESULTS: Among all patients, the average operation time was 124.5 minutes (range, 91–152 minutes), the average amount of bleeding was 90 mL (range, 55–150 mL), and the fracture healing rate was 100%. At the end of follow-up, the mean VAS score was 1.6 ± 0.4, mean ASES score was 84.4 ± 6.3, and mean CMS was 70.3 ± 6.1; no serious complications had occurred; and the patients exhibited good recovery of shoulder function. CONCLUSIONS: MultiLoc nails® can be applied to the treatment of four-part PHFs. This surgical fixation method has no obvious complications and helps to restore shoulder function.