[Biomechanical reconstruction of the hip in metal-on-metal total hip resurfacing].
OBJECTIVE
To analyze the effect of biomechanical reconstruction of the hip in metal-on-metal total hip resurfacing.


METHODS
Thirty patients undergoing hip resurfacing arthroplasties were enrolled in this study. The clinical outcomes of the patients were assessed according to the Harris Hip Score before and after the surgery, X-ray examinations and biomechanical reconstruction evaluations.


RESULTS
After the operation, the length of the patients' legs was shortened by a mean of 2.4 mm. and the femoral offset was decreased by a mean of 5.45 mm. No dislocation were be found in these patients. The preoperative Harris Hip Score was 36.69-/+7.16, significantly lower than that postoperative score (89.63-/+3.36, P<0.01).


CONCLUSIONS
Precise biomechanical reconstruction of the hip can be achieved in hip resurfacing arthroplasty, and the stability and functional restoration is guaranteed by large diameter prosthesis design.
Lin
Li-jun
LJ
Department of Orthopedics, Zhujiang Hospital, Southern Medical University, Guangazhou, China.
Jin
An-min
AM
Fang
Guo-fang
GF
Li
Jian-yi
JY
Ding
Chao
C
Cheng
Wei-yi
WY
Wei
Ge-jin
GJ
Li
Qi
Q