Jin-Hyuck Lee1, Jae-Won Heo2, Dae-Hee Lee3. 1. Department of Orthopaedic Surgery, Korea University College of Medicine, Anam Hospital, Seoul, South Korea. 2. Department of Orthopaedic Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea. 3. Department of Orthopaedic Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea. Electronic address: eoak22@empal.com.
Abstract
BACKGROUND: Types of mechanoreceptors may differ between the medial and lateral menisci, suggesting that postural stability may differ between patients with medial and lateral meniscus tears. However, to date, postural stability has not been compared in patients with medial and lateral meniscus tears. This study used stabilometry to compare postural stability in patients with medial and lateral meniscus tears. METHODS: Postural stability and thigh muscle strength were assessed in 24 patients with medial and 18 patients with lateral meniscus tears. Postural stability was determined by measuring the anteroposterior (APSI), mediolateral (MLSI), and overall (OSI) stability indices using stabilometry. Maximal torque (60°/s) of the quadriceps and hamstring was evaluated using an isokinetic testing device. RESULTS: The three stability indices, OSI, APSI, and MLSI, in both involved and uninvolved knees were all significantly greater in patients with lateral than with medial meniscus tears. (P<0.001 for all OSI, APSI, and MLSI in both involved and uninvolved knees, except for P=0.005 for MLSI of involved knees). In patients with medial meniscus tears, both OSI (1.4±0.4 vs. 1.1±0.4, P=0.037) and MLSI (0.9±0.3 vs. 0.8±0.3, P=0.041) were significantly higher on the injured than the uninjured side. In patients with lateral meniscus tears, none of the stability indices differed significantly between injured and uninjured knee joints. CONCLUSION: Postural stability of both the injured and uninjured knee joints was poorer in patients with lateral than with medial meniscus tears.
BACKGROUND: Types of mechanoreceptors may differ between the medial and lateral menisci, suggesting that postural stability may differ between patients with medial and lateral meniscus tears. However, to date, postural stability has not been compared in patients with medial and lateral meniscus tears. This study used stabilometry to compare postural stability in patients with medial and lateral meniscus tears. METHODS: Postural stability and thigh muscle strength were assessed in 24 patients with medial and 18 patients with lateral meniscus tears. Postural stability was determined by measuring the anteroposterior (APSI), mediolateral (MLSI), and overall (OSI) stability indices using stabilometry. Maximal torque (60°/s) of the quadriceps and hamstring was evaluated using an isokinetic testing device. RESULTS: The three stability indices, OSI, APSI, and MLSI, in both involved and uninvolved knees were all significantly greater in patients with lateral than with medial meniscus tears. (P<0.001 for all OSI, APSI, and MLSI in both involved and uninvolved knees, except for P=0.005 for MLSI of involved knees). In patients with medial meniscus tears, both OSI (1.4±0.4 vs. 1.1±0.4, P=0.037) and MLSI (0.9±0.3 vs. 0.8±0.3, P=0.041) were significantly higher on the injured than the uninjured side. In patients with lateral meniscus tears, none of the stability indices differed significantly between injured and uninjured knee joints. CONCLUSION: Postural stability of both the injured and uninjured knee joints was poorer in patients with lateral than with medial meniscus tears.
Authors: Marilia Novaes; Adriana Carvalho; Juliana F Sauer; Guilherme C Brech; Camilo P Helito; Silvia M A João Journal: BMC Musculoskelet Disord Date: 2022-04-25 Impact factor: 2.562
Authors: Jin Hyuck Lee; Soon Hyuck Lee; Gi Won Choi; Hae Woon Jung; Woo Young Jang Journal: Knee Surg Sports Traumatol Arthrosc Date: 2018-10-05 Impact factor: 4.342
Authors: Jin Hyuck Lee; Ki Hun Shin; Seung-Beom Han; Kyo Sun Hwang; Seo Jun Lee; Ki-Mo Jang Journal: Medicine (Baltimore) Date: 2022-09-16 Impact factor: 1.817