Selective Muscle Weakness in Achilles Tendinopathy: Is It Time to Look Beyond the Soleus?

Abstract

Plantarflexor weakness in Achilles tendinopathy has long been attributed to soleus dysfunction. However, recent neurophysiological and biomechanical evidence challenge this view, suggesting selective deficits in gastrocnemius lateralis muscle-tendon unit. This article reexamines the role of the triceps surae in Achilles tendinopathy and proposes a shift toward assessing gastrocnemius lateralis deficits and targeting rehabilitation to restore its function.