A 27-year-old man comes to the physician because of pain and swelling in his right knee that began 3 days ago when he fell during football practice. He fell on his flexed right knee as he dove to complete a pass. He felt some mild knee pain but continued to practice. Over the next 2 days, the pain worsened and the knee began to swell. Today, the patient has an antalgic gait. Examination shows a swollen and tender right knee; flexion is limited by pain. The right knee is flexed and pressure is applied to proximal tibia; 8 mm of backward translation of the foreleg is observed. Which of the following is most likely injured?
APosterior cruciate ligament
BAnterior cruciate ligament
CMedial collateral ligament
DLateral collateral ligament
ELateral meniscus
A 19-year-old recent ROTC male recruit presents to the university clinic with left foot pain. He reports that the pain started a week ago while running morning drills. The pain will improve with rest but will occur again during exercises or during long periods of standing. He denies any recent trauma. His medical history is significant for partial color blindness. He has no other chronic medical conditions and takes no medications. He denies any surgical history. His family history is significant for schizophrenia in his father and breast cancer in his mother. He denies tobacco, alcohol, or illicit drug use. On physical examination, there is tenderness to palpation of the second metatarsal of the left foot. A radiograph of the left foot shows no abnormalities. Which of the following is the best next step in management?
ASplinting
BMRI
CRest and ibuprofen
DCasting
EInternal fixation
A 38-year-old man is brought to the emergency department after suffering a motor vehicle accident as the passenger. He had no obvious injuries, but he complains of excruciating right hip pain. His right leg is externally rotated, abducted, and extended at the hip and the femoral head can be palpated anterior to the pelvis. Plain radiographs of the pelvis reveal a right anterior hip dislocation and femoral head fracture. Which sensory and motor deficits are most likely in this patient's right lower extremity?
ALoss of sensation laterally below the knee, weak thigh extension and knee flexion
BNumbness of the ipsilateral scrotum and upper medial thigh
CSensory loss to the dorsal surface of the foot and part of the anterior lower and lateral leg and foot drop
DParesis and numbness of the medial thigh and medial side of the calf, weak hip flexion and knee extension
ENumbness of the medial side of the thigh and inability to adduct the thigh
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