Subtalar arthroereisis

Last revised by Ashesh Ishwarlal Ranchod on 23 Oct 2023

Subtalar arthroereisis is a non-fusion surgical treatment of pediatric symptomatic flexible flatfoot (pes planus). The procedure involves the insertion of an implant into the subtalar joint to correct excessive hindfoot eversion.

There are two techniques for subtalar arthroereisis1:

  1. an implant is placed in the tarsal sinus to prevent the collapse of the talus

  2. a screw is inserted into the lateral side of the talus or calcaneus to correct the foot to a neutral position (the screw head sits on the subtalar joint to prevent eversion)

Implants are usually made of metal or resorbable poly-L-lactic acid (PLLA).

Subtalar arthroereisis is often performed with other procedures, such as tendon transfers, tendon reconstructions, and osteotomies 1.

Complications include 1:

  • soft tissue irritation or pain

  • malcorrection

  • peroneal contractures

  • wound infections

  • 4th metatarsal stress fractures

  • screw loosening

The procedure was first described by E F Chambers in 1946 2.

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