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Table 2 Loading steps for each implant

From: Biomechanical comparative finite element analysis between a conventional proximal interphalangeal joint flexible hinge implant and a novel implant design using a rolling contact joint mechanism

 

Conventional PIPJ FH implant

Novel PIPJ implant using a RCJ mechanism

Loading step 1

Clockwise rotation of 90° to obtain 90° of flexion (full flexion state)

Counterclockwise rotation of 30° to obtain full extension

Loading step 2

Counterclockwise rotation of 90° to obtain full extension (unloaded state)

Clockwise rotation of 30° to obtain 30° of flexion (unloaded state)

Loading step 3

 

Clockwise rotation of 60° to obtain 90° of flexion

Loading step 4

 

Counterclockwise rotation of 60° to obtain 30° of flexion (unloaded state)

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Journal of Orthopaedic Surgery and Research

ISSN: 1749-799X