Author: Tyler Schmitz, DO
Co Author #1: Jennifer Maynard, MD
Co Author #2: Jeremy Rush, MD
Senior Editor: Yaowen Hu, MD, MBA
Editor: Caitlyn Mooney, MD
A five year-old male presents with his grandmother to the sports medicine clinic with the chief complaint of left knee pain.
Ten days before presentation, the patient's sister landed on his left anterior knee at a trampoline park. Afterwards, he could not bear weight fully, and he had swelling prompting an emergency room visit where x-ray s were normal. He has been using ibuprofen three times per day for pain relief. He denied any giving way, catching, locking, popping, numbness, or tingling.
General: Normal weight prepubescent male in no acute distress
Gait: Antalgic gait favoring his left knee with knee in slight flexion on tiptoes.
Neurological: Sensation intact to light touch and symmetric throughout bilateral L2-S1 dermatomes.
Left knee: (Exam limited due to guarding)
Inspection: Moderate effusion present. No gross deformity, erythema, ecchymosis, warmth.
Palpation: Tenderness along distal femur laterally, at popliteal fossa, and over patella. Nontender at medial or lateral joint line or over tibial plateau.
Range of motion: Active range of motion 20-60 degrees.
Special tests: Equivocal Anterior and Posterior Drawer, Negative Lachman test, Negative Varus and Valgus stress, and Negative McMurray test
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