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June 19, 2026Orthopaedic Journal of Sports MedicineOpen Access

Association Between Knee and Hip Strength Ratios and the Lower Quarter Y-Balance Test in Youth Athletes Following Anterior Cruciate Ligament Reconstruction

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Authors

KSKatie SlomaTexas Scottish Rite Hospital for ChildrenAEAshley ErdmanTexas Scottish Rite Hospital for ChildrenPWPhilip WilsonTexas Scottish Rite Hospital for Children

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Overview

Randomized trial evaluates the relationship between strength ratios and dynamic stability in youth athletes, suggesting implications for rehabilitation.

Key Points

  • This research aims to explore the association between y-balance test performance and strength ratios of the knee and hip in youth post-ACLR.
  • Participants were 91 athletes aged approximately 15.5 years, cleared for sports post-ACLR.
  • Isokinetic strength of knee and hip was measured, and y-balance test distances were normalized to leg length.
  • Multiple linear regressions assessed the predictability of YBT measures on strength ratios.
  • A one-unit increase in anterior reach correlated with an 8.6% reduction in knee strength ratio (H:Q, p=0.001).
  • Posteromedial reach increased H:Q by 5.0% (p=0.013).
  • Female sex and body weight increase significantly lowered hip strength ratios (AD:AB) by 23.5% (p=0.026) and 0.8% (p=0.037), respectively.

Cite This Study

Sloma et al. (2026) studied this question.

synapsesocial.com/papers/6a34df7565a5b0777af2e867https://doi.org/10.1177/2325967126s00230
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Also Consider

Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

  1. 1Quadriceps Strength and Hamstring-to-Quadriceps Ratios in Pediatric Patients After ACL Reconstruction: Revisiting Norms from Adult Data2025
  2. 2Limb Dominance Does Not Affect Y-Balance Performance in Young Athletes 12 Weeks After Anterior Cruciate Ligament Reconstruction2026
  3. 3Patients Who Do Not Achieve 90% of the Nonoperative Side on the Anterior Reach Y-Balance Test at 3 Months After ACL Reconstruction Are More Likely to Have Persistent Knee Extension Strength Asymmetry at 6 Months Postoperatively2025
  4. 4Role of Thigh Muscle Strength and Joint Kinematics in Dynamic Stability: Implications for Y-Balance Test Performance2024 · 11 citations
  5. 5Relationship Between Quadriceps Muscle Strength Asymmetry and Lower Limb Biomechanical Asymmetry During Running in Patients Who Underwent Anterior Cruciate Ligament Reconstruction2026 · 1 citations