A 19-year-old male soccer player plants his foot and pivots suddenly, hearing a pop followed by rapid knee swelling. Vital signs: BP 118/76, HR 92, RR 16, Temp 37°C, SpO₂ 98% RA. Physical examination demonstrates positive anterior drawer test with increased anterior translation of the tibia relative to the femur. MRI shows acute ligamentous disruption with bone marrow edema at the tibial spine. Posterior drawer test is negative. Which of the following structures is most likely torn?
- A)Medial meniscus
- B)Posterior cruciate ligament
- C)Lateral collateral ligament
- D)Medial collateral ligament
- E)Anterior cruciate ligamentGABARITO
Explicação
A noncontact pivot injury with a popping sensation, hemarthrosis, and increased anterior tibial translation is classic for anterior cruciate ligament rupture. The ACL prevents anterior displacement of the tibia relative to the femur. Ver explicação completa e trilha adaptativa →