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Our aim was to evaluate different treatment methods including conservative treatment (CT), locking-plate osteosynthesis (OS) and hemiarthroplasty (HA) in three- and four-part humeral fractures in patients older than 50 years.  Methods  Forty-seven patients that have at least one year of follow-up were divided into three groups: 18 patients treated with OS, 14 patients treated conservatively and 15 patients treated with HA. For further evaluation, constant shoulder score, disabilities of the arm, shoulder and hand score (DASH), American Shoulder and Elbow Society (ASES) score had been used. Shoulder range of motion was also assessed.  Results  OS and CT groups had better scores than HA group. In OS group, average Constant score was 71.6 ± 16.2, DASH score was 12.1 (5.2-24.2) and ASES score was 77.5 (50.8-96.6). In CT group, average Constant score was 69.6 ± 19.2, DASH score was 16.4 (12.5-36.7) and ASES score was 76.6 (45.4-87.9). DASH scores (p = 0.032), Constant scores (p = 0.001), forward elevation (p < 0.001), abduction (p < 0.001), internal (p = 0.022) and external rotation (p = 0.048) were significantly improved in OS and CT groups than HA group.  Conclusions  HA should not be considered a priority in surgical planning in Neer three-part and four-part proximal humerus fractures. CT is superior for patients with additional morbidity and advanced age. But in patients who are younger and can tolerate the surgical procedure, the priority should be OS.

Comparison of Treatment Options of Three- and Four-Part Humerus Proximal Fractures in Patients Over 50 Years of Age