Abstract：Objective To investigate the clinical effect of proximal humeral internal locking system（PHILOS）in treatment of proximal humeral fractures in elderly patients.Methods 89 cases of elderly patients with proximal humeral fractureswho were hospitalized in our hospital from January 2010 to December 2014 were selected as our object.They were divided into the PHILOSgroup（45 cases）and the control group（44 cases）by treatmentmethods.The patients in the PHILOSgroup were treated with PHILOSand the patients in the control group were treated with locking plate fixation. The duration of operation，intraoperative blood loss，postoperative complicationsin between two groups were recorded.The recovery of shoulder joint function were compared between PHILOSgroup.The recovery of shoulder joint function were evaluated with Neer evaluation criteria and control group 1 year after operation.Results The duration of operation in PHILOSgroup［（61.5±13.9）min］was shorter than that in control group［（91.5±14.0）min］（P＜0.05）.The intraoperative blood loss in PHILOSgroup［（198.2±26.9）ml］was less than that in control group［（276.6±25.8）ml］（P＜0.05）.The postoperative complicationsin PHILOSgroup（4.4%）was lower than that in control group（20.4%）（P＜0.05）.In PHILOSgroup，best shoulder joint function was in 24 cases（53.3%），good in 18 cases（40.0%），general in 3 cases（6.7%），poor in 0 case.In control group，best shoulder joint function was in 12 cases（27.3%），good in 15 cases（34.1%），general in 10 cases（2.7%），poor in 7 cases（15.9%）.The excellent rates of the two groupswere 93.3%and 61.4%respectively the differencewas statistically significant（P＜0.05）.Conclusion PHILOShas the advantages of less damage and good recovery of shoulder joint function with locking plate fixation in treatment of proximal humeral fractures in elderly patients.This treatment is worth clinical promotion.
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