Abstract
Proximal humeral fractures, particularly in osteoporotic patients, remain an unsolved problem as regards the durability of the osteosynthesis. The AO/ASIF group has developed a new technique which aims to preserve the biological integrity of the humeral head and secures the reduction using multiple locking screws with angular stability (Philos), thus allowing an early mobilization. We retrospectively reviewed the complications and functional outcome after a minimum follow-up of 1 year in 72 patients treated with this new method. 2 fractures failed to unite, and 3 patients developed an avascular necrosis of the humeral head. In addition, 2 implant failures were observed due to a technical error. According to the Constant score, the functional outcome was acceptable even in elderly patients. The Philos method appears to be safe and can be recommended for the treatment of proximal humeral fractures in patients with poor bone quality.
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