Table VII.

Comparison of preoperative and postoperative Harris scores between two groups.

Groups	Cases	Before operation	12 months after operation	24 months after operation	48 months after operation	F	p
Control group	65	66.95ol gr	89.36ol gr	91.13ol gr	93.73ol gr	56.347	<0.001
Observation group	65	67.16vatio	81.73vatio	83.26vatio	85.46vatio	37.736	<0.001
T		0.376	13.633	14.265	13.884
p		0.708	<0.001	<0.001	<0.001