Risks relating to posterior 2-portal arthroscopic subtalar arthrodesis and articular surfaces abrasion quality achievable with these approaches: A cadaver study - 07/06/11
, P. Oger b, X. Roussignol a, P. Boisrenoult b, J. Sfez a, F. Duparc a, c
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Summary |
Introduction |
Many techniques for arthroscopic subtalar arthrodesis have been described since 1985. The procedure can be challenging because posterior and anterior portals are used conjointly with distraction. A posterior 2-portal approach was described in 2000.
Hypothesis |
The goal of this study was to evaluate the quality of the freshening that can be achieved in the posterior subtalar joint using this approach. Does a posterior 2-portal approach allow for a complete freshening of the posterior subtalar joint?
Material and methods |
Freshening was performed through an arthroscopic posterior 2-portal approach on 10 cadavers. The quality of bone freshening and proximity of the neurovascular structures to the posterior portals were subsequently evaluated by dissection.
Results |
There was one partial laceration of the sural nerve. The posteromedial portal was 6.8mm (95% CI: 4.4 to 9.2) away from the posterior tibial vascular pedicle. The entire talar and calcaneal articular surfaces of the posterior subtalar joint were freshened. In eight of 10 cases (95% CI: 48 to 95%), the posteromedial process of the talus prevented contact between fragments.
Discussion |
This study showed that the entire posterior subtalar joint can be freshened through an arthroscopic posterior 2-portal approach with little morbidity.
Level of evidence |
Level IV.
Le texte complet de cet article est disponible en PDF.Keywords : Posterior Arthroscopic Sub-Talar Arthrodesis (PASTA), Subtalar joint, 2-portal, Arthroscopy
Plan
Vol 97 - N° 4
P. 396-400 - juin 2011 Retour au numéro
Article précédent
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