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Total hip arthroplasty: the relationship between posterolateral reconstruction, abductor muscle strength, and femoral
T Yamaguchi1, M Naito, I Asayama
1Department of Orthopaedic Surgery, Fukuoka University School of Medicine, Fukuoka, Japan. tetsu-y@jf6.so-net.ne.jp
Purpose:
To evaluate the relationship between posterolateral reconstruction, abductor muscle strength, and femoral offset following total hip arthroplasty.
Methods:
Of 28 patients (56 limbs) we assessed, 12 underwent posterolateral reconstruction (reconstruction group) and 16 did not (non-reconstruction group). Isometric abductor muscle strength was measured with a handheld dynamometer. Each patient's muscle strength was converted into a force to body weight ratio, and this ratio was used in the comparisons.
Results:
The reconstruction group showed a higher value in abductor muscle strength than the non-reconstruction group (p<0.05). Significant correlation between abductor muscle strength and femoral offset was found in the reconstruction group (p=0.016; r=0.674).
Conclusion:
Posterolateral reconstruction and appropriate reconstruction of femoral offset following total hip arthroplasty are important to improve the abductor muscle strength.
