Luciana D Mendonça1, Evert Verhagen2, Natália F N Bittencourt3, Gabriela G P Gonçalves4, Juliana M Ocarino5, Sérgio T Fonseca6. 1. Laboratory of Sport Injury Prevention and Rehabilitation (LAPREV) - Universidade Federal de Minas Gerais, Brazil; Departamento de Fisioterapia - Faculdade de Ciências Biológicas e da Saúde - Universidade Federal dos Vales do Jequitinhonha e do Mucuri, Brazil. 2. Department of Public and Occupational Health, EMGO(+) Institute for Health and Care Research, VU University Medical Center, The Netherlands. 3. Laboratory of Sport Injury Prevention and Rehabilitation (LAPREV) - Universidade Federal de Minas Gerais, Brazil; Minas Tenis Clube, Brazil. 4. Minas Tenis Clube, Brazil. 5. Laboratory of Sport Injury Prevention and Rehabilitation (LAPREV) - Universidade Federal de Minas Gerais, Brazil; Departamento de Fisioterapia - Escola de Educação Física, Fisioterapia e Terapia Ocupacional - Universidade Federal de Minas Gerais, Brazil. 6. Laboratory of Sport Injury Prevention and Rehabilitation (LAPREV) - Universidade Federal de Minas Gerais, Brazil; Departamento de Fisioterapia - Escola de Educação Física, Fisioterapia e Terapia Ocupacional - Universidade Federal de Minas Gerais, Brazil. Electronic address: sergioteixeirafonseca@gmail.com.
Abstract
OBJECTIVES: To investigate the association between lower limb alignment, range of motion/flexibility and muscle strength with the presence of patellar tendon abnormalities in male athletes. DESIGN: This was a cross-sectional study. METHODS: Thirty-one male basketball and volleyball athletes were assessed for ankle dorsiflexion range of motion, shank-forefoot alignment, iliotibial band flexibility, hip external rotators and abductors isometric torque, passive hip internal rotation range of motion and frontal plane knee and patellar alignment (McConnell and Arno angles). Ultrasonographic evaluations of hypoechoic areas of the patellar tendons were performed in longitudinal and transverse planes. A receiver operating characteristic curve was used to determine clinically relevant cut-off point for each variable. When the area under the curve was statistically significant, Prevalence Ratio (PR) and 95% confidence intervals were calculated to indicate the strength of the association between the independent variable and the presence of patellar tendon abnormalities. RESULTS: Receiver operating characteristic curve showed that iliotibial band flexibility (p=0.006), shank-forefoot alignment (p=0.013) and Arno angle (p=0.046) were associated with patellar tendon abnormalities. Cut-off points were established and only the Prevalence Ratio of iliotibial band flexibility (cut-off point=-0.02°/kg; PR=5.26) and shank-forefoot alignment (cut-off point=24°; PR=4.42) were statistically significant. CONCLUSIONS: Athletes with iliotibial band or shank-forefoot alignment above the clinically relevant cut-off point had more chance to have patellar tendon abnormalities compared to athletes under the cut-off point values. These results suggest that such factors could contribute to patellar tendon overload, since patellar tendon abnormalities indicate some level of tissue damage. Both factors might be considered in future prospective studies.
OBJECTIVES: To investigate the association between lower limb alignment, range of motion/flexibility and muscle strength with the presence of patellar tendon abnormalities in male athletes. DESIGN: This was a cross-sectional study. METHODS: Thirty-one male basketball and volleyball athletes were assessed for ankle dorsiflexion range of motion, shank-forefoot alignment, iliotibial band flexibility, hip external rotators and abductors isometric torque, passive hip internal rotation range of motion and frontal plane knee and patellar alignment (McConnell and Arno angles). Ultrasonographic evaluations of hypoechoic areas of the patellar tendons were performed in longitudinal and transverse planes. A receiver operating characteristic curve was used to determine clinically relevant cut-off point for each variable. When the area under the curve was statistically significant, Prevalence Ratio (PR) and 95% confidence intervals were calculated to indicate the strength of the association between the independent variable and the presence of patellar tendon abnormalities. RESULTS: Receiver operating characteristic curve showed that iliotibial band flexibility (p=0.006), shank-forefoot alignment (p=0.013) and Arno angle (p=0.046) were associated with patellar tendon abnormalities. Cut-off points were established and only the Prevalence Ratio of iliotibial band flexibility (cut-off point=-0.02°/kg; PR=5.26) and shank-forefoot alignment (cut-off point=24°; PR=4.42) were statistically significant. CONCLUSIONS: Athletes with iliotibial band or shank-forefoot alignment above the clinically relevant cut-off point had more chance to have patellar tendon abnormalities compared to athletes under the cut-off point values. These results suggest that such factors could contribute to patellar tendon overload, since patellar tendon abnormalities indicate some level of tissue damage. Both factors might be considered in future prospective studies.
Authors: Michel D Crema; Larissa G Cortinas; Giovanni B P Lima; Rene Jorge Abdalla; Sheila Jean McNeill Ingham; Abdalla Y Skaf Journal: Skeletal Radiol Date: 2017-12-05 Impact factor: 2.199
Authors: Sergio T Fonseca; Thales R Souza; Evert Verhagen; Richard van Emmerik; Natalia F N Bittencourt; Luciana D M Mendonça; André G P Andrade; Renan A Resende; Juliana M Ocarino Journal: Sports Med Date: 2020-10 Impact factor: 11.136
Authors: Ángela Sánchez-Gómez; Jose Manuel Jurado-Castro; Fernando Mata; Antonio Jesús Sánchez-Oliver; Raúl Domínguez Journal: Int J Environ Res Public Health Date: 2022-01-01 Impact factor: 3.390