Place the patient in a supine position. Position a large bump under the hip to create a sloppy lateral-type position.

Place a nonsterile tourniquet on the operative thigh. Prep and drape the lower extremity in a sterile manner.

Exsanguinate the lower extremity and inflate the tourniquet 250 mm Hg.

Identify the fibula just posterior to bone.

Make a 6-cm incision on the lateral aspect of the patient’s ankle (Figure 15-1).

Incise the peroneal retinaculum to expose the peroneal tendons and the superior peroneal tendon sheath (Figure 15-2).

Identify the dislocated tendon(s) and determine whether they will need a fibular groove deepening. If they have a shallow groove or there is an absence of a groove, this will be necessary (Figures 15-3 and 15-4).

Debride the tendons. Remove the tenosynovium; inspect for tears; and if the tendon is torn, repair the tendon (see Chapter 14).