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. 2024 Jan 29;16(3):386.
doi: 10.3390/nu16030386.

Preoperative Body Composition Correlates with Postoperative Muscle Volume and Degeneration after Total Hip Arthroplasty

Taku Ukai  1 , Katsuya Yokoyama  2 , Masahiko Watanabe  1
Affiliations

Preoperative Body Composition Correlates with Postoperative Muscle Volume and Degeneration after Total Hip Arthroplasty

Taku Ukai et al. Nutrients. .

Abstract

Impaired muscle recovery after total hip arthroplasty (THA) may affect gait and activities of daily living. Bioelectrical impedance analysis (BIA) can assess body composition and muscle volume, and computed tomography (CT) can assess muscle volume and the fatty degeneration of muscle. This study aimed to explore the effectiveness of BIA, and the correlation between preoperative body composition and postoperative muscle volume and degeneration after THA using BIA and CT. Thirty-eight patients who underwent THA and had BIA and CT performed pre- and postoperatively were retrospectively assessed. The BIA-derived measurements of preoperative body composition (fat mass index, fat-free mass index, and phase angle) were correlated with the CT-derived measurements (pre- and postoperative muscle volume and gluteus maximus and quadriceps Hounsfield Units of the affected hip). The preoperative fat mass index negatively correlated with the postoperative muscle volume of the gluteus maximus (p = 0.02) and quadriceps (p < 0.001) and the Hounsfield Units of the gluteus maximus (p = 0.03) and quadriceps (p = 0.03). The preoperative fat-free mass index positively correlated with the postoperative muscle volume of the quadriceps (p = 0.02). The preoperative phase angle positively correlated with the postoperative muscle volume of the quadriceps (p = 0.001) and the Hounsfield Units of the gluteus maximus (p = 0.03) and quadriceps (p = 0.001). In patients who underwent THA, preoperative body composition correlated with postoperative muscle volume and the fatty degeneration of the affected lower limb. Preoperative body composition may help predict postoperative muscle volume and fatty degeneration and thus, postoperative recovery.

Keywords: bioelectrical impedance; body composition; muscle mass; total hip arthroplasty.

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Conflict of interest statement

The authors declare no conflicts of interest.

Figures

Figure 1
Figure 1
A bioelectrical impedance analysis device for body composition measurements. Bioelectrical impedance analysis takes advantage of noninvasive minute electric current (100 µA) using two pairs of hand electrodes and two pairs of foot electrodes. This device (mBCA515; seca, Hamburg, Germany) can measure segmental skeletal muscle mass (right arm, left arm, trunk, right leg, left leg), fat mass index, fat-free mass index, and phase angle simultaneously.
Figure 2
Figure 2
Measurement of muscle volume and Hounsfield Units. Cross-sectional measurement of the gluteal maximus and quadriceps was performed using computed tomography images at the greater trochanter (A) and the middle of the thigh (B).
Figure 3
Figure 3
Correlation between preoperative fat mass index (FMI) and postoperative muscle volume and fatty degeneration.
Figure 4
Figure 4
Correlation between preoperative fat-free mass index (FFMI) and postoperative muscle volume and fatty degeneration.
Figure 5
Figure 5
Correlation between preoperative phase angle (PhA) and postoperative muscle volume and fatty degeneration.
See this image and copyright information in PMC

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