Susan Mayes1,2, April-Rose Ferris3, Peter Smith4, Jill Cook2. 1. The Australian Ballet, Southbank, Victoria, Australia. 2. School of Allied Health, La Trobe University, Bundoora, Victoria, Australia. 3. Department of Physiotherapy, Monash University, Frankston, Victoria, Australia; and. 4. MIA East Melbourne Radiology, East Melbourne, Victoria, Australia.
Abstract
OBJECTIVE: To compare hip joint effusion-synovitis prevalence in professional ballet dancers with nondancing athletes and to evaluate the relationship between effusion-synovitis and clinical measures and cartilage defects. DESIGN: Case-control study. SETTING: Elite ballet and sport. PARTICIPANTS: Forty-nine professional ballet dancers and 49 age-matched and sex-matched athletes. INDEPENDENT VARIABLES: Group (dancers/athletes), sex, age, years of training, Copenhagen Hip and Groin Outcome Scores (HAGOSs), hip rotation range of motion (ROM), generalized joint hypermobility (GJH), and hip cartilage defect scores. MAIN OUTCOME MEASURES: Hip joint effusion-synovitis (absent, grade 1 = 2-4 mm, grade 2 = >4 mm) scored with 3-Tesla magnetic resonance imaging. RESULTS: Hip joint effusion-synovitis was found in 22 (45%) dancers and 13 (26.5%) athletes (P = 0.06). Grade 2 effusion-synovitis was only found in dancers (n = 8, r = 0.31, P = 0.009). The prevalence of effusion-synovitis was similar in men (n = 11, 26%) and women (n = 24, 43%, P = 0.09). Female dancers with effusion-synovitis had lower HAGOS pain (r = 0.63, P = 0.001) and sports/recreation scores (r = 0.66, P = 0.001) compared with those without effusion-synovitis. The HAGOS scores were not related to effusion-synovitis in male dancers or female and male athletes (P > 0.01 for all). Effusion-synovitis was not related to hip ROM, GJH, or cartilage defect scores (P > 0.05 for all). CONCLUSIONS: Hip joint effusion-synovitis was related to higher levels of pain and lower sports/recreation function in female ballet dancers. Effusion-synovitis was not related to hip rotation ROM, GJH or cartilage defects. Larger sized joint effusion-synovitis was exclusively found in dancers.
OBJECTIVE: To compare hip joint effusion-synovitis prevalence in professional ballet dancers with nondancing athletes and to evaluate the relationship between effusion-synovitis and clinical measures and cartilage defects. DESIGN: Case-control study. SETTING: Elite ballet and sport. PARTICIPANTS: Forty-nine professional ballet dancers and 49 age-matched and sex-matched athletes. INDEPENDENT VARIABLES: Group (dancers/athletes), sex, age, years of training, Copenhagen Hip and Groin Outcome Scores (HAGOSs), hip rotation range of motion (ROM), generalized joint hypermobility (GJH), and hip cartilage defect scores. MAIN OUTCOME MEASURES: Hip joint effusion-synovitis (absent, grade 1 = 2-4 mm, grade 2 = >4 mm) scored with 3-Tesla magnetic resonance imaging. RESULTS:Hip joint effusion-synovitis was found in 22 (45%) dancers and 13 (26.5%) athletes (P = 0.06). Grade 2 effusion-synovitis was only found in dancers (n = 8, r = 0.31, P = 0.009). The prevalence of effusion-synovitis was similar in men (n = 11, 26%) and women (n = 24, 43%, P = 0.09). Female dancers with effusion-synovitis had lower HAGOS pain (r = 0.63, P = 0.001) and sports/recreation scores (r = 0.66, P = 0.001) compared with those without effusion-synovitis. The HAGOS scores were not related to effusion-synovitis in male dancers or female and male athletes (P > 0.01 for all). Effusion-synovitis was not related to hip ROM, GJH, or cartilage defect scores (P > 0.05 for all). CONCLUSIONS:Hip joint effusion-synovitis was related to higher levels of pain and lower sports/recreation function in female ballet dancers. Effusion-synovitis was not related to hip rotation ROM, GJH or cartilage defects. Larger sized joint effusion-synovitis was exclusively found in dancers.
Authors: J J Heerey; R Srinivasan; R Agricola; A Smith; J L Kemp; T Pizzari; M G King; P R Lawrenson; M J Scholes; R B Souza; T Link; S Majumdar; K M Crossley Journal: Osteoarthritis Cartilage Date: 2020-12-30 Impact factor: 6.576