Patellar tooth sign of degenerative enthesopathy
40 years old man with knee pain. Long history of bodybuilding.
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Tooth sign is indicative of a patellar enthesopathy.
- 1. Greenspan A, Norman A, Tchang FK. "Tooth" sign in patellar degenerative disease. J Bone Joint Surg Am. 1977;59(4):483-5.