FIGURE 2 Our technique of injections.
From the following article:
Treating chronic anal fissure with botulinum neurotoxin
Giuseppe Brisinda, Federica Cadeddu, Francesco Brandara, Donatella Brisinda and Giorgio Maria
BACK TO ARTICLE
Figure 2. Our technique of injections.
With the patient lying on their side (usually the left side when the operator is right-handed), the internal anal sphincter can be easily palpated and injected. The lower rounded edge of the internal anal sphincter, which is 3 cm long and 5–15 mm in thickness, can be felt on physical examination, at about 1–1.5 cm to the dentate line.
