A 40-year-old man presents with acute onset knee pain following a twisting injury while playing soccer. On examination, there's pain and a clicking sensation with passive extension and flexion of the knee (McMurray's test). What is your preliminary diagnosis and what would you recommend?
The patient's history of a twisting injury, acute onset of pain, and a positive McMurray's test are suggestive of a meniscal tear. The next step would be to obtain an MRI of the knee to confirm the diagnosis and assess the extent of the tear. Depending on the size and location of the tear, as well as the patient's symptoms and activity level, treatment may include conservative measures like rest, physical therapy, and NSAIDs, or surgical options like meniscus repair or meniscectomy.