In the gastroc-soleus complex, which zone is most likely to experience overcorrection?

In the gastroc-soleus complex, which zone is most likely to experience overcorrection?

• A. Zone I
• B. Zone II
• C. Zone IV
• D. Zone III

Answer: (D)

The key idea is that how far you release along the gastroc-soleus unit changes how much lengthening you gain with a given amount of tissue release. Releasing more distally in the unit produces a larger increase in ankle dorsiflexion for the same tissue excursion because the distal portions have less passive resistance from the proximal muscle belly and behave differently during lengthening. Therefore, the distal-most zone near the musculotendinous junction is most prone to overshooting and overcorrecting the ankle position. That makes the distal zone the one where overcorrection is most likely. Proximal releases tend to yield less length change and a lower risk of overshoot, while releases too far distally can introduce other complications, but the specific risk of overcorrection is greatest in the distal zone.