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Related Experiment Video

Updated: Feb 19, 2026

In Vivo Quantification of Hip Arthrokinematics during Dynamic Weight-bearing Activities using Dual Fluoroscopy
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Does decrease in hip range of motion interfere in frontal plane leg alignment in teenage soccer players?

Kelly Scaramussa1, Jacqueline Vieira de Castro2, João Luiz Ellera Gomes2

  • 1Universidade Federal do Rio Grande do Sul/UFRGS, Av. Ramiro Barcelos, 2400, 2 andar, Porto Alegre, CEP, 90035-003, Brazil. kellyscaramussa@yahoo.com.br.

European Journal of Orthopaedic Surgery & Traumatology : Orthopedie Traumatologie
|October 29, 2017
PubMed
Summary
This summary is machine-generated.

Teenage soccer players show reduced hip range of motion (ROM), especially internal rotation (IR), compared to non-athletes. Varus leg alignment is common in young soccer players, preceding detected hip abnormalities.

Keywords:
Anterior cruciate ligamentHipKneeRange of motion

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Area of Science:

  • Orthopedics
  • Sports Medicine
  • Biomechanics

Background:

  • Soccer participation in teenagers is associated with specific biomechanical adaptations.
  • Understanding hip range of motion (ROM) and leg alignment is crucial for injury prevention in young athletes.

Purpose of the Study:

  • To determine cross-sectional changes in hip ROM (transverse plane) in adolescent soccer players versus non-athletes.
  • To correlate hip ROM with frontal plane leg alignment (varus-valgus).

Main Methods:

  • Comparative cross-sectional study utilizing non-random convenience sampling.
  • Assessed 396 male participants aged 9-18 years (183 soccer players, 213 non-athletes).
  • Measured hip internal rotation (IR), external rotation (ER), and frontal plane leg alignment.

Main Results:

  • Soccer players exhibited significantly lower mean IR (20.7°) and ER (36.5°) compared to non-athletes (IR: 32.8°, ER: 46.7°).
  • Older athletes showed reduced IR and ER; older non-athletes showed reduced ER.
  • Varus leg alignment was prevalent in athletes (71.0%) and increased with age in non-athletes.

Conclusions:

  • Adolescent soccer players demonstrate decreased hip ROM, particularly IR.
  • Varus leg alignment is common in young soccer players and may precede hip ROM deficits.