Hindfoot - Lateral Approach

Modern Study Review (AI-Generated)

High-Yield Summary

The lateral approach to the hindfoot is a versatile, gold-standard surgical corridor primarily used for open reduction and internal fixation of calcaneal fractures and lateral hindfoot pathology. It provides direct access to the subtalar, talocalcaneonavicular, and calcaneocuboid joints with excellent visualization. While arthroscopic and minimally invasive techniques are emerging, this approach remains indispensable for complex hindfoot reconstructions and joint exposures.

Applied Anatomy & Intervals

Internervous Interval

Between the Deep Peroneal Nerve (DPN) supplying the peroneus tertius and the Superficial Peroneal Nerve (SPN) supplying the peroneal tendons.

Anatomic Landmarks

Distal tip of the lateral malleolus
Sinus tarsi
Talocalcaneonavicular joint (medial curve endpoint of incision)
Calcaneocuboid joint (lateral capsule exposure)

Patient Positioning & Setup

Table Type: Standard radiolucent operating table
Patient Position: Supine with a sandbag or bump under the ipsilateral buttock to elevate and slightly internally rotate the limb, optimizing lateral hindfoot exposure
Specialized Equipment:
Limb positioner or sandbag for stable foot positioning
C-arm fluoroscopy positioned medially or anteriorly for intraoperative imaging

Surgical Technique (The “Vital Steps”)

Incision & Superficial Dissection

Make a curved, transverse incision starting just distal to the lateral malleolus, extending distally over the lateral hindfoot and sinus tarsi
Curve the incision medially to end over the talocalcaneonavicular joint
Avoid wide skin flap mobilization to reduce risk of skin necrosis

Deep Dissection & Exposure

Incise the deep fascia in line with the skin incision
Identify and protect the peroneus tertius and extensor digitorum longus (EDL) tendons; retract them medially
Incise the peroneal retinacula and reflect the peroneal tendons anteriorly
Detach the fat pad within the sinus tarsi and the origin of the extensor digitorum brevis (EDB) from the calcaneus
Expose the dorsal capsules of the talocalcaneonavicular joint (distal wound) and the calcaneocuboid joint (lateral wound)
Incise the capsule of the posterior talocalcaneal joint as needed for access

The “Danger Zone”

Structure	Risk Description	Protection Strategy
Superficial Peroneal Nerve (SPN)	At risk during skin incision and retinacular dissection	Identify and protect during superficial dissection; avoid excessive retraction
Deep Peroneal Nerve (DPN)	Vulnerable near peroneus tertius tendon	Stay within internervous plane; gentle medial retraction of peroneus tertius tendon
Peroneal Tendons	Risk of injury during retinacular incision and reflection	Incise retinacula carefully; maintain tendon sheath integrity when possible
Lateral Calcaneal Artery	Risk of bleeding during deep dissection	Careful hemostasis; avoid aggressive dissection in sinus tarsi fat pad
Skin Flaps	Risk of necrosis with wide mobilization	Limit skin flap elevation; preserve subdermal plexus

Post-Operative Pearl

Early mobilization should respect soft tissue healing; avoid aggressive inversion or eversion stresses for 4-6 weeks to protect repaired joint capsules and tendons. Weight-bearing protocols depend on pathology and fixation stability but typically begin with protected weight-bearing.

Classic Clinical Notes