Muscle-tendon-related abnormalities detected by ultrasonography are common in symptomatic hip dysplasia

TY - JOUR

T1 - Muscle-tendon-related abnormalities detected by ultrasonography are common in symptomatic hip dysplasia

AU - Jacobsen, Julie Sandell

AU - Bolvig, Lars

AU - Hölmich, Per

AU - Thorborg, Kristian

AU - Jakobsen, Stig Storgaard

AU - Søballe, Kjeld

AU - Mechlenburg, Inger

PY - 2018/8/1

Y1 - 2018/8/1

N2 - Introduction: Hip dysplasia is characterized by reduced acetabular coverage of the femoral head leading to an increased mechanical load on the hip joint and the acting hip muscles. Potentially, the muscles and tendons functioning close to the hip joint may present with overuse-related ultrasonography findings. The primary aim was to report the prevalence of muscle–tendon-related abnormalities detected by ultrasonography in 100 patients with symptomatic hip dysplasia. The secondary aim was to investigate correlations between muscle–tendon-related abnormalities detected by ultrasonography and clinically identified pain related to muscles and tendons. Materials and methods: One hundred patients (17 men) with a mean age of 29 ± 9 years were included. Muscle–tendon-related abnormalities were detected with a standardized ultrasound examination. Correlations between muscle–tendon-related abnormalities detected by ultrasonography and clinically identified pain related to muscles and tendons were tested with Spearman’s rank correlation coefficient. Results: The most prevalent ultrasonography findings were identified in the iliopsoas tendon [50% (95% CI 40; 60)], the adductor longus tendon [31% (95% 22; 40)] and the gluteus medius/minimus tendons [27% (18; 36)]. Significant correlations between ultrasonography findings and pain related to muscles and tendons were only found for the iliopsoas tendon (ρ = 0.24 and p = 0.02) and the gluteus medius/minimus tendons (ρ = 0.35 and p < 0.001). Conclusions: Muscle–tendon-related abnormalities detected by ultrasonography in the hip and groin region are common in patients with symptomatic hip dysplasia, and the ultrasonography findings of the iliopsoas and gluteus medius/minimus tendons are weakly to moderately correlated to pain related to muscles and tendons in these structures. Both the iliopsoas and the gluteus medius/minimus have a pronounced stabilizing role in the dysplastic hip joint, and the common muscle–tendon-related abnormalities in these patients may be caused by injuries related to excessive use or degenerative changes in the muscle–tendon tissue.

AB - Introduction: Hip dysplasia is characterized by reduced acetabular coverage of the femoral head leading to an increased mechanical load on the hip joint and the acting hip muscles. Potentially, the muscles and tendons functioning close to the hip joint may present with overuse-related ultrasonography findings. The primary aim was to report the prevalence of muscle–tendon-related abnormalities detected by ultrasonography in 100 patients with symptomatic hip dysplasia. The secondary aim was to investigate correlations between muscle–tendon-related abnormalities detected by ultrasonography and clinically identified pain related to muscles and tendons. Materials and methods: One hundred patients (17 men) with a mean age of 29 ± 9 years were included. Muscle–tendon-related abnormalities were detected with a standardized ultrasound examination. Correlations between muscle–tendon-related abnormalities detected by ultrasonography and clinically identified pain related to muscles and tendons were tested with Spearman’s rank correlation coefficient. Results: The most prevalent ultrasonography findings were identified in the iliopsoas tendon [50% (95% CI 40; 60)], the adductor longus tendon [31% (95% 22; 40)] and the gluteus medius/minimus tendons [27% (18; 36)]. Significant correlations between ultrasonography findings and pain related to muscles and tendons were only found for the iliopsoas tendon (ρ = 0.24 and p = 0.02) and the gluteus medius/minimus tendons (ρ = 0.35 and p < 0.001). Conclusions: Muscle–tendon-related abnormalities detected by ultrasonography in the hip and groin region are common in patients with symptomatic hip dysplasia, and the ultrasonography findings of the iliopsoas and gluteus medius/minimus tendons are weakly to moderately correlated to pain related to muscles and tendons in these structures. Both the iliopsoas and the gluteus medius/minimus have a pronounced stabilizing role in the dysplastic hip joint, and the common muscle–tendon-related abnormalities in these patients may be caused by injuries related to excessive use or degenerative changes in the muscle–tendon tissue.

KW - Adult

KW - Aged

KW - Cumulative Trauma Disorders/diagnostic imaging

KW - Female

KW - Hip Dislocation/complications

KW - Hip Joint/diagnostic imaging

KW - Humans

KW - Male

KW - Middle Aged

KW - Musculoskeletal Pain/diagnostic imaging

KW - Prevalence

KW - Ultrasonography

KW - Young Adult

U2 - 10.1007/s00402-018-2947-4

DO - 10.1007/s00402-018-2947-4

M3 - Journal article

C2 - 29728835

SN - 0936-8051

VL - 138

SP - 1059

EP - 1067

JO - Archives of Orthopaedic and Trauma Surgery

JF - Archives of Orthopaedic and Trauma Surgery

IS - 8

ER -