Ultrasound Echo Intensity of the Rectus Femoris Correlates Muscle Strength in the Post-Operative Rehabilitation of Anterior Cruciate Ligament Reconstruction: Original Research. RSP [Internet]. 2026 Jan. 2 [cited 2026 Apr. 23];6(1). Available from: https://researchdirects.com/index.php/strengthandperformance/article/view/165