Daisuke Homma1,2, Izumi Minato3, Norio Imai4, Dai Miyasaka5, Yoshinori Sakai6, Yoji Horigome7, Hayato Suzuki7, Hayato Shimada8, Yoichiro Dohmae5, Naoto Endo7. 1. Division of Orthopedic Surgery, Department of Regenerative and Transplant Medicine, Niigata University Graduate School of Medical and Dental Sciences, 757 Ichibancho, Asahimachidori, Chuou-ku, Niigata, Niigata, 951-8510, Japan. daisukehomma24@gmail.com. 2. Division of Rehabilitation, Niigata Bandai Hospital, 2-2-8 Yachiyo, Chuou-ku, Niigata, Niigata, 950-8584, Japan. daisukehomma24@gmail.com. 3. Division of Orthopedic Surgery, Niigata Rinko Hospital, 1-114-3 Momoyama-cho, Higashi-ku, Niigata, Niigata, 950-0051, Japan. 4. Division of Comprehensive Geriatrics in Community, Niigata University Graduate School of Medical and Dental Sciences, 757 Ichibancho, Asahimachidori, Chuou-ku, Niigata, Niigata, 951-8510, Japan. 5. Division of Orthopedic Surgery, Niigata Bandai Hospital, 2-2-8 YachiyoChuou-ku, Niigata, Niigata, 950-8584, Japan. 6. Division of Orthopedic Surgery, Niigata General Hospital, 463 Kanege, Chuo-ku, Niigata, Niigata, 950-1197, Japan. 7. Division of Orthopedic Surgery, Department of Regenerative and Transplant Medicine, Niigata University Graduate School of Medical and Dental Sciences, 757 Ichibancho, Asahimachidori, Chuou-ku, Niigata, Niigata, 951-8510, Japan. 8. Division of Orthopedic Surgery, Mito Saiseikai General Hospital, 3-3-10 Futabadai, Mito, Ibaraki, 311-4198, Japan.
Abstract
PURPOSE: To evaluate the relationship between the volume, cross-sectional area, and peak isometric muscle strength of the gluteus maximus and gluteus medius muscles in patients with hip osteoarthritis, and to use this information to identify effective sites for measurement of the cross-sectional area of these muscles. METHODS: Twenty-four patients with hip osteoarthritis were included. The muscle cross-sectional area and volume were calculated from magnetic resonance images. The cross-sectional area was calculated at three levels: the inferior point of the sacroiliac joint, just above the femoral head, and at the greatest muscle diameter. Peak isometric strength was assessed using hand-held dynamometry, using the extension and external rotation for the gluteus maximus and abduction and internal rotation for the gluteus medius. Measured outcomes were compared between the two muscles, and the association between muscle volume, cross-sectional area, and peak isometric muscle strength was evaluated using Pearson's correlation. RESULTS: Volume was correlated with the cross-sectional area in the gluteus maximus (r ≥ 0.707) and with the cross-sectional area (r ≥ 0.637) and peak isometric strength (r ≥ 0.477) in the gluteus medius. There was no difference between the cross-sectional area measured at the greatest muscle diameter and just above the femoral head (p = 0.503) for the gluteus maximus and at the inferior point of the sacroiliac joint (p = 0.651) for the gluteus medius. CONCLUSION: The cross-sectional area, when used to calculate the muscle volume, should be evaluated just above the femoral head for the gluteus maximus and at the inferior point of the sacroiliac joint for the gluteus medius.
PURPOSE: To evaluate the relationship between the volume, cross-sectional area, and peak isometric muscle strength of the gluteus maximus and gluteus medius muscles in patients with hip osteoarthritis, and to use this information to identify effective sites for measurement of the cross-sectional area of these muscles. METHODS: Twenty-four patients with hip osteoarthritis were included. The muscle cross-sectional area and volume were calculated from magnetic resonance images. The cross-sectional area was calculated at three levels: the inferior point of the sacroiliac joint, just above the femoral head, and at the greatest muscle diameter. Peak isometric strength was assessed using hand-held dynamometry, using the extension and external rotation for the gluteus maximus and abduction and internal rotation for the gluteus medius. Measured outcomes were compared between the two muscles, and the association between muscle volume, cross-sectional area, and peak isometric muscle strength was evaluated using Pearson's correlation. RESULTS: Volume was correlated with the cross-sectional area in the gluteus maximus (r ≥ 0.707) and with the cross-sectional area (r ≥ 0.637) and peak isometric strength (r ≥ 0.477) in the gluteus medius. There was no difference between the cross-sectional area measured at the greatest muscle diameter and just above the femoral head (p = 0.503) for the gluteus maximus and at the inferior point of the sacroiliac joint (p = 0.651) for the gluteus medius. CONCLUSION: The cross-sectional area, when used to calculate the muscle volume, should be evaluated just above the femoral head for the gluteus maximus and at the inferior point of the sacroiliac joint for the gluteus medius.
Entities:
Keywords:
Hip osteoarthritis; Muscle cross-sectional area; Muscle strength; Muscle volume
Authors: Ljiljana Bogunovic; Simon X Lee; Marc S Haro; Jonathon M Frank; Richard C Mather; Charles A Bush-Joseph; Shane J Nho Journal: Arthroscopy Date: 2015-07-15 Impact factor: 4.772