• Arch Orthop Trauma Surg · Sep 2020

    The potential of locking plate with intramedullary fibular allograft to manage proximal humeral fracture with an unstable medial column.

    • Young-Kyu Kim, Suk-Woong Kang, Kyu-Hak Jung, and Young-Kwang Oh.
    • Department of Orthopaedic Surgery, Gil Medical Center, Gachon University, Namdong-daero 774 beon-gil, Namdong-gu, Incheon, 21565, Republic of Korea.
    • Arch Orthop Trauma Surg. 2020 Sep 18.

    PurposeTo evaluate the potential of locking compression plate with intramedullary fibular allograft in managing proximal humeral fractures with an unstable medial column.MethodsBetween March 2007 and March 2015, we retrospectively analyzed 63 patients who underwent locking plate fixation for proximal humeral fracture with an unstable medial column. All patients were assigned into group 1 (patients treated with locking plate) and group 2 (patients treated with locking plate with intramedullary fibular allograft). Groups 1 and 2 were composed of 29 and 34 patients, respectively. We analyzed bone union, the neck-shaft angle, the Constant score, the range of motion, and complications.ResultsThe mean average bone union time of the patients was 13.9 weeks in group 1 and 11.3 weeks in group 2. The average Constant score was 67.4 in group 1 and 73.6 in group 2 (p < 0.05). The mean preoperative NSA, postoperative NSA, and NSA at the last follow-up were 104.4°, 125.8°, and 115.8°, respectively, in group 1, and 109.0°, 130.3°, and 127.1°, respectively, in group 2. The mean forward flexion, abduction, external rotation, and internal rotation were 109.0°, 48.2°, 34.0°, and L5, respectively, in group 1, and 127.5°, 118.2°, 38.7°, and L1, respectively, in group 2. In group 1, avascular necrosis occurred in one patient and screw cutout in two patients. In group 2, screw cutout occurred in one patient.ConclusionIn patients aged over 65 years with proximal humeral fractures, an unstable medial column was associated with poor clinical results owing to varus collapse. To prevent this, an intramedullary fibular allograft was used, and radiologic and clinical results were better with this approach than with a locking plate alone. Therefore, locking plate fixation using a fibular allograft is one of the possible treatments for patients with an unstable medial column.

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