The Effects of Medial and Lateral Displacement Calcaneal Osteotomies on Ankle and Subtalar Joint Pressure Distribution

We compared the pressure distribution in the ankle and posterior facet of the subtalar joint following 1 cm medial and lateral displacement calcaneal osteotomies to the pressure distribution in the intact foot. Six cadaver specimens were loaded in neutral alignment while pressure measurements were r...

Full description

Saved in:
Bibliographic Details
Published in:Foot & ankle international 2001-11, Vol.22 (11), p.885-889
Main Authors: Davitt, James S., Beals, Timothy C., Bachus, Kent N.
Format: Article
Language:English
Subjects:
Ankle Joint - physiopathology
Biomechanical Phenomena
Cadaver
Calcaneus - surgery
Foot Deformities - surgery
Humans
Osteotomy - adverse effects
Osteotomy - methods
Pressure
Research Design
Subtalar Joint - physiopathology
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:We compared the pressure distribution in the ankle and posterior facet of the subtalar joint following 1 cm medial and lateral displacement calcaneal osteotomies to the pressure distribution in the intact foot. Six cadaver specimens were loaded in neutral alignment while pressure measurements were recorded. A 1-cm medial displacement osteotomy shifted the average center of force in the ankle 1.0 mm medially (p = 0.36) while a lateral displacement osteotomy shifted the center of force 1.1 mm laterally (p = 0.42). There was also a slight shift in the percentage of pressure toward the side of the talus to which the calcaneus was shifted. For the lateral displacement osteotomy, the pressure increased 4.0% in the lateral-most quadrant (p = 0.05), while the medial osteotomy increased the pressure 1.3% in the medial quadrant (p = 0.30). In the subtalar joint, a medial displacement osteotomy shifted the pressure distribution slightly medially (5.9%, p = 0.06) and more anteriorly (9.6%, p = 0.02) while the distribution was shifted laterally (5.9%, p = 0.17) and anteriorly (5.6%, p = 0.03) with a lateral displacement osteotomy. These shifts of percentage of pressure between quadrants of the joints were slight—less than 5% in the ankle and less than 10% in the subtalar joint. Significant translation of the calcaneal tuberosity appears to have only a small effect on pressure distribution in the ankle and posterior facet of the subtalar joint in a weighted cadaver model.
ISSN:1071-1007
1944-7876
DOI:10.1177/107110070102201105