Generalized Joint Laxity Is Associated With Dynamic Hip Ultrasonography Measures in Female Athlete Patients Who Are Not Hypermobile

Andrea Stracciolini, Yi Meng Yen, Patricia E. Miller, Kristin E. Whitney, Jacob Jones, Eduardo N. Novais, Pierre A. d'Hemecourt

Research output: Contribution to journalArticlepeer-review


Objectives: To investigate ultrasound (US) femoroacetabular translation measurements in female athlete patients. Methods: A prospective cross-sectional study was conducted in female athlete patients <50 years. Demographic data, Beighton score/hypermobility status, and sport participation were collected. Hip dysplasia was determined using radiographic measurements (lateral center edge angle, anterior center edge angle, Tönnis angle); femoral version angles were measured with CT or MR. Femoroacetabular translation US measures included neutral (N), neutral flexed (NF), extension external rotation/apprehension (EER) positions. Maximal difference (delta) between US measures was calculated. Results: 206/349 female hips were analyzed (median age 21.2 years [range, 12–49.5]). The primary sport group was performing arts (45%, 92/206). Mean Beighton score was 5.2 (SD, 2.5) with 61% (129/206) of hips exhibiting hypermobility (Beighton score ≥5). For each additional unit of Beighton score, N US measurement increased by 0.7 mm (β = 0.7; 95% confidence interval [CI] = 0.22–1.25; P <.001), NF by 1 mm ((Formula presented.) = 0.9; 95% CI = 0.3–1.43; P =.002) and EER by 0.8 mm ((Formula presented.) = 0.8; 95% CI = 0.27–1.37; P <.001) when adjusting for age and dysplasia status. A positive correlation was detected between NF (r = 0.19; 95% CI = 0.05–0.33; P =.007) and EER (r = 0.19; 95% CI = 0.05–0.32; P =.01) with Tönnis angle and a negative correlation between the delta and femoral version (r = −0.20; 95% CI = −0.35 to 0.03; P =.02). No difference in US measures was detected across sport groups (N [P =.24], NF [P =.51], EER [P =.20], delta [P =.07]). Conclusion: Beighton score was independently associated with dynamic US measures in female athlete patients who are not hypermobile when controlling for other factors.

Original languageEnglish (US)
JournalJournal of Ultrasound in Medicine
StateAccepted/In press - 2021


  • Beighton score
  • dynamic ultrasound
  • hip apprehension test
  • hip microinstability
  • hip ultrasound

ASJC Scopus subject areas

  • Radiological and Ultrasound Technology
  • Radiology Nuclear Medicine and imaging


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