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Figure 1. Overview of tested hooks. Pictured devices are not actual measured devices. (a) Hosmer model 5XA hook (Hosmer; Campbell, California), (b) Hosmer Sierra 2 Load VO hook (Hosmer), (c) RSL Steeper Carbon Gripper (RSL Steeper; Leeds, United Kingdom), and (d) Otto Bock model 10A60 hook (Otto Bock; Duderstadt, Germany). VO = voluntary opening.