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The J-sign in patellar maltracking

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A 42-year-old man presented with numerous left patella dislocations. While the initial dislocation was traumatic, recent episodes were atraumatic. He had no clinical evidence of hyperlaxity, but presented with patellar apprehension… Click to show full abstract

A 42-year-old man presented with numerous left patella dislocations. While the initial dislocation was traumatic, recent episodes were atraumatic. He had no clinical evidence of hyperlaxity, but presented with patellar apprehension and a positive J-sign. His examination was otherwise unremarkable. An MRI of his knee revealed early patellofemoral degenerative changes and …

Keywords: patellar maltracking; sign patellar; sign

Journal Title: BMJ Case Reports
Year Published: 2018

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