title: [Analysis of the results of hemiarthroplasty in the treatment of proximal humeral fractures].
abstract: OBJECTIVE
  To evaluate the clinical results of hemiarthroplasty in the treatment of severe proximal humeral fracture, and to analyze the influencing factors.
  
  
  METHODS
  Forty-two cases with mean age of 63 years old were included. Mean follow-up duration was 29 months (12 - 48 months). Subjective satisfaction, ROM, muscle strength, stability, smoothness of motion were all evaluated. Radiographs of anterio-posterior view and axial view of shoulder were taken. Total-length radiographs of bilateral humerus were taken for 27 cases and CT for 15 cases.
  
  
  RESULTS
  With Constant-Murley score 19 cases (45%) were excellent, 17 cases (40%) good, 6 cases (15%) poor, and the rate of total satisfactory was 85%. Post-operative active ROM, anterior flexion was (100 +/- 32) degrees , external rotation (16 +/- 11) degrees , external rotation and posterior extension to the level of L2.
  
  
  CONCLUSIONS
  The reasons for the poor results include improper restoration of humeral length, over retroversion of prosthesis, poor fixation of tuberosity, malunion, absorption of greater tuberosity and heterotopic ossification.
authors.affiliation: Department of Orthopaedic Surgery, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai Institute of Orthopaedics and Traumatology, Shanghai, China. ray_wangs@yahoo.com.cn
authors.forename: Lei
authors.initials: L
authors.lastname: Wang
authors.forename: Cheng-Yu
authors.initials: CY
authors.lastname: Zhuang
authors.forename: Wei-Bin
authors.initials: WB
authors.lastname: Zhang
authors.forename: Qing-Ming
authors.initials: QM
authors.lastname: Yang
mesh_terms: D019643:Arthroplasty, Replacement / Q000379:methods*; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008875:Middle Aged; D012189:Retrospective Studies; D012784:Shoulder Fractures / Q000601:surgery*; D012785:Shoulder Joint / Q000601:surgery; D016896:Treatment Outcome