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Updated: Jun 12, 2026

A Mouse Model of Ankle-Subtalar Complex Joint Instability

A Mouse Model of Ankle-Subtalar Complex Joint Instability

Published on: October 28, 2022

Extra-articular ankle stabilization: a case series.

Thomas S Roukis¹

¹Vascular/Endovascular Surgery Service, Department of Surgery, Madigan Army Medical Center, Tacoma, Washington, USA. thomas.s.roukis@us.army.mil

Foot & Ankle Specialist

|May 29, 2010

Summary

This summary is machine-generated.

Related Concept Videos

Ankle Joint

Ankle Joint

The ankle is formed by the talocrural joint (crural = leg). It consists of the articulations between the talus bone of the foot and the distal ends of the tibia and fibula of the leg. The superior aspect of the talus bone is square-shaped and has three areas of articulation. The top of the talus articulates with the inferior tibia. This is the portion of the ankle joint that carries the body weight between the leg and foot. The sides of the talus are firmly held in position by the articulations...

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Extra-articular ankle stabilization using Steinmann pins is a safe and effective technique for maintaining foot position after calf lengthening or to prevent equinus contracture when other methods fail.

Area of Science:

Orthopedic Surgery
Podiatric Surgery

Background:

Maintaining foot at 90 degrees is challenging post-calf lengthening or for equinus contracture prevention.
Traditional immobilization (splint, cast) or external fixation may be inappropriate for certain patients.

Purpose of the Study:

To evaluate the safety and efficacy of extra-articular ankle stabilization for maintaining foot position.
To present an observational case series of this technique.

Main Methods:

Observational case series of 9 patients undergoing extra-articular ankle stabilization.
Percutaneous placement of 2 Steinmann pins extra-articular to the ankle joint.
Pins retained for a mean of 5.5 weeks.

Main Results:

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All 9 procedures were successful in maintaining the desired foot position.

Mean follow-up was 12 months.

The technique was safe, simple, reliable, and minimally invasive.

Conclusions:

Extra-articular ankle stabilization is a viable alternative when traditional immobilization is not feasible.
This technique is effective for posterior calf lengthening and equinus contracture management.
It offers a minimally invasive solution for complex foot and ankle cases.