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. 2016 Mar 18;43(2):134–144. doi: 10.5999/aps.2016.43.2.134

Fig. 1. Main theories explaining the mechanism of injury.

Fig. 1

In all analyses, an axial force is applied to the tip of a straight digit (black arrows), followed by extreme passive distal interphalangeal joint (DIPJ) hyperextension (white upper arrow), which would account for bony lesions, or extreme passive DIPJ hyperflexion (lower white arrow), which would account for tendinous lesions.