During a 14-year-old adolescent's physical examination, the nurse identifies that he plays soccer and football and is complaining of knee pain when he rises from a squatting position. The nurse should suspect:
a. Legg-Calvé-Perthes disease.
b. osteomyelitis.
c. Duchenne muscular dystrophy.
d. Osgood-Schlatter disease.
D
Knee pain and tenderness aggravated by activity that requires kneeling, running, climbing stairs, and rising from a squatting position are highly significant for Osgood-Schlatter disease. The etiology is believed to be related to repetitive stress from sports-related activities combined with overuse of immature muscles and tendons. Pain on activity that decreases with rest is indicative of Legg-Calvé-Perthes disease. Preexisting pain, favoring the affected limb, erythema, and tenderness are associated with osteomyelitis. Duchenne muscular dystrophy presents with progressive generalized weakness and muscle wasting.
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