[Analysis of the results of hemiarthroplasty in the treatment of proximal humeral fractures].
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.
Wang
Lei
L
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
Zhuang
Cheng-Yu
CY
Zhang
Wei-Bin
WB
Yang
Qing-Ming
QM
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