**2.9 Soleus**

The patient should lie prone, and look at the midpoint of the back of the leg. Between post knee crease and post upper margin of the calcaneus, where gastrocnemius lower margin is visible and palpable. One can inject just below the lower margin of the gastrocnemius. After needle insertion flexes the knee to 90 degrees (to avoid gastrocnemius action), and passively moves the ankle, good movement of the needle helps in correctly identifying the soleus. If the needle movement is less, may imply going deep into the flexor digitorum or tibialis posterior (**Figure 7**).

**Figure 7.** *Soleus(sol): plus denotes injection for sol at the lower margin of GN.*

*Anatomical Surface Guided Techniques for Botulinum Toxin Injection in Spastic Cerebral… DOI: http://dx.doi.org/10.5772/intechopen.107200*
