Flexor Substitution

Flexor Substitution

This occurs when the interossei muscles have lost the ability to stabilise the metatarsophalangeal joints. Usually seen occurring during late stance phase in a supinated or cavus foot type as a result of a weakness of the posterior calf muscles. The flexor digitorum and flexor hallucis longus fire/contract for a longer period of time to assist the gastroc-soleus complex  clawing of digits during propulsion.

Comments are closed.