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Figure 1 | Journal of Orthopaedic Surgery and Research

Figure 1

From: Primary traumatic patellar dislocation

Figure 1

The plain Merchant axial radiograph demonstrates an osteochondral fracture of the medial facet of the patella in a first-time traumatic patellar dislocation, a secondary sign of an injury to the medial patellofemoral ligament, at the patellar attachment.

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