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Fig. 1. (A) The equine forelimb, showing the muscles associated with weight bearing. (B) The limb can be conceptually divided into two springs, representing the proximal part of the limb (shoulder to elbow) and the distal part of the limb (elbow to digit). (C) The length of the springs during the stance phase can be calculated using Pythagarus theorem. MCP, metacarpo-phalangeal; DIP, distal interphalangeal; SDF, superficial digital flexor; DDF, deep digital flexor; AL, accessory ligament: SL, suspensory ligament; T, tendon.