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 36-year-old male is taken to the emergency room after jumping from a building. Bilateral fractures to the femur were stabilized at the scene by emergency medical technicians. The patient is lucid upon questioning and his vitals are stable. Pain only at his hips was elicited. Cervical exam was not performed. What is the best imaging study for this patient?
AAP and lateral radiographs of hips
BLateral radiograph (x-ray) of hips
CMagnetic resonance imaging (MRI) of hips, knees, lumbar, and cervical area
DAnterior-posterior (AP) and lateral radiographs of hips, knees, lumbar, and cervical area
EComputed tomography (CT) scan of cervical spine, hips, and lumbar area
A 47-year-old woman presents to the emergency department with pain in her right knee. She states that the pain started last night and rapidly worsened, prompting her presentation for care. The patient has a past medical history of rheumatoid arthritis and osteoarthritis. Her current medications include corticosteroids, infliximab, ibuprofen, and aspirin. The patient denies any recent trauma to the joint. Her temperature is 99.5°F (37.5°C), pulse is 112/min, blood pressure is 100/70 mmHg, respirations are 18/min, and oxygen saturation is 98% on room air. On physical exam, you note erythema and edema of the right knee. There is limited range of motion due to pain of the right knee. Which of the following is the best initial step in management?
AConservative therapy
BBroad spectrum antibiotics
CSurgical drainage
DAspiration
ECT scan
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