There seems little in common between surfing and bowling, yet the lesions reported in this issue of The Journal have a common etiology of chronic pressure and irritation. Swift (p 223) describes an asymptomatic condition he observed in a teen-aged boy, an enthusiastic surfer. Below each knee Swift noted firm elevated plaques, a condition which, had the patient only been a girl, he might have named "surfmaid's knee." Apparently the lumps are common among regular surfers and seem to result from repeated kneeling on the surfboard while propelling it out through the surf after each ride. Unlike common housemaid's knee, no bursitis is present and the masses rarely require therapy, being, indeed, a status symbol among aficionados of surfing.
A bowler, Siegel (p 263) points out, occasionally drops a ball on his toe. Less obvious is the so-called bowler's neuroma, which Siegel studied in a man who was an active
SPORTS INJURIES. JAMA. 1965;192(3):246. doi:10.1001/jama.1965.03080160066017
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