BACKGROUND: Femoroacetabular impingement (FAI) is becoming a prevalent overuse injury diagnosis among hockey players. In the adult ice hockey stride, the "at-risk" hip position, defined by internal rotation during flexion and external rotation during abduction, reportedly increases hip vulnerability to labral injury as a result of FAI. HYPOTHESIS: Peewee youth ice hockey players display the kinematics for both described at-risk hip positions (internal rotation during flexion and external rotation during abduction) in the ice hockey sprint start. STUDY DESIGN: Descriptive laboratory study. METHODS: Twelve healthy male Peewee ice hockey players (mean age, 10.8 ± 0.6 years) participated in this study. Thirty-five anatomic landmarks were used to analyze the 3-dimensional kinematic and kinetic variables of the hip associated with the ice hockey sprint start. Ten high-speed (120-Hz) infrared cameras recorded the trials, which were subsequently analyzed with Motion Monitor software. The sprint start was recorded over 4 defined periods of motion: start, push, swing, and even. RESULTS: In the "push" period, 11.5° of external rotation was observed concurrently with 13.2° of abduction in the push leg, and 6.8° of internal rotation occurred with 33.8° of flexion in the lead leg. During the recovery phase of the "swing" period, maximum internal rotation was 5.6° with concurrent hip flexion of 44.2° in the push leg, while lead leg internal rotation reached a maximum of 10.8° with hip flexion of 35.1° during the "even" period. CONCLUSION: During the sprint start, youth ice hockey players externally rotate in abduction during the push-off phase and internally rotate through increasing hip flexion during the recovery phase, displaying the at-risk hip positions of the ice hockey skating stride. CLINICAL RELEVANCE: During the sprint start, youth ice hockey players position their hips in a manner that can cause impingement of the femoral neck against the acetabulum and potentially lead to labral tears and/or articular cartilage damage. This knowledge could be applied to assist in the prevention of overuse injuries of the hip as youth hockey players mature and increase in skill level.
BACKGROUND: Femoroacetabular impingement (FAI) is becoming a prevalent overuse injury diagnosis among hockey players. In the adult ice hockey stride, the "at-risk" hip position, defined by internal rotation during flexion and external rotation during abduction, reportedly increases hip vulnerability to labral injury as a result of FAI. HYPOTHESIS: Peewee youth ice hockey players display the kinematics for both described at-risk hip positions (internal rotation during flexion and external rotation during abduction) in the ice hockey sprint start. STUDY DESIGN: Descriptive laboratory study. METHODS: Twelve healthy male Peewee ice hockey players (mean age, 10.8 ± 0.6 years) participated in this study. Thirty-five anatomic landmarks were used to analyze the 3-dimensional kinematic and kinetic variables of the hip associated with the ice hockey sprint start. Ten high-speed (120-Hz) infrared cameras recorded the trials, which were subsequently analyzed with Motion Monitor software. The sprint start was recorded over 4 defined periods of motion: start, push, swing, and even. RESULTS: In the "push" period, 11.5° of external rotation was observed concurrently with 13.2° of abduction in the push leg, and 6.8° of internal rotation occurred with 33.8° of flexion in the lead leg. During the recovery phase of the "swing" period, maximum internal rotation was 5.6° with concurrent hip flexion of 44.2° in the push leg, while lead leg internal rotation reached a maximum of 10.8° with hip flexion of 35.1° during the "even" period. CONCLUSION: During the sprint start, youth ice hockey players externally rotate in abduction during the push-off phase and internally rotate through increasing hip flexion during the recovery phase, displaying the at-risk hip positions of the ice hockey skating stride. CLINICAL RELEVANCE: During the sprint start, youth ice hockey players position their hips in a manner that can cause impingement of the femoral neck against the acetabulum and potentially lead to labral tears and/or articular cartilage damage. This knowledge could be applied to assist in the prevention of overuse injuries of the hip as youth hockey players mature and increase in skill level.
Authors: Keelan Enseki; Marcie Harris-Hayes; Douglas M White; Michael T Cibulka; Judith Woehrle; Timothy L Fagerson; John C Clohisy Journal: J Orthop Sports Phys Ther Date: 2014-06 Impact factor: 4.751
Authors: Joseph S Tramer; Jessica M Deneweth; David Whiteside; James R Ross; Asheesh Bedi; Grant C Goulet Journal: Sports Health Date: 2015-03-10 Impact factor: 3.843
Authors: Olufemi R Ayeni; Marcin Kowalczuk; Jordan Farag; Forough Farrokhyar; Raymond Chu; Asheesh Bedi; Kevin Willits; Mohit Bhandari Journal: Open Access J Sports Med Date: 2014-06-19
Authors: Alexander E Weber; Haley Nakata; Eric N Mayer; Ioanna K Bolia; Marc J Philippon; Jason Snibbe; Russ Romano; James E Tibone; Seth C Gamradt Journal: Orthop J Sports Med Date: 2020-05-22