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"At-risk" positioning and hip biomechanics of the Peewee ice hockey sprint start.
Am J Sports Med 2011; 39 Suppl:29S-35SAJ

Abstract

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+Show Affiliations

Steadman Philippon Research Institute, Vail, Colorado, USA. justin.stull@sprivail.orgNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

21709029

Citation

Stull, Justin D., et al. ""At-risk" Positioning and Hip Biomechanics of the Peewee Ice Hockey Sprint Start." The American Journal of Sports Medicine, vol. 39 Suppl, 2011, 29S-35S.
Stull JD, Philippon MJ, LaPrade RF. "At-risk" positioning and hip biomechanics of the Peewee ice hockey sprint start. Am J Sports Med. 2011;39 Suppl:29S-35S.
Stull, J. D., Philippon, M. J., & LaPrade, R. F. (2011). "At-risk" positioning and hip biomechanics of the Peewee ice hockey sprint start. The American Journal of Sports Medicine, 39 Suppl, 29S-35S. doi:10.1177/0363546511414012.
Stull JD, Philippon MJ, LaPrade RF. "At-risk" Positioning and Hip Biomechanics of the Peewee Ice Hockey Sprint Start. Am J Sports Med. 2011;39 Suppl:29S-35S. PubMed PMID: 21709029.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - "At-risk" positioning and hip biomechanics of the Peewee ice hockey sprint start. AU - Stull,Justin D, AU - Philippon,Marc J, AU - LaPrade,Robert F, PY - 2011/6/29/entrez PY - 2011/7/8/pubmed PY - 2011/12/13/medline SP - 29S EP - 35S JF - The American journal of sports medicine JO - Am J Sports Med VL - 39 Suppl N2 - 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. SN - 1552-3365 UR - https://www.unboundmedicine.com/medline/citation/21709029/"At_risk"_positioning_and_hip_biomechanics_of_the_Peewee_ice_hockey_sprint_start_ L2 - http://journals.sagepub.com/doi/full/10.1177/0363546511414012?url_ver=Z39.88-2003&rfr_id=ori:rid:crossref.org&rfr_dat=cr_pub=pubmed DB - PRIME DP - Unbound Medicine ER -