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ARTHROSCOPIC SUBTALAR ARTHRODESIS



Abstract

Aims: Numerous techniques for subtalar arthrodesis have been described, with intraarticular and extraarticular methods. The purpose of this paper is to show our results with subtalar arthrodesis with arthroscopic technique.

Methods: We reviewed 30 subtalar fusions and followed 26 patients (20 females and 6 males, average age 56,3 years) for an average of 48 months.

The preoperative diagnosis was primary arthrosis in 19 cases, arthrosis secondary to trauma in 7 cases and subtalar instability secondary to neuropathic conditions in 4 cases. Patients are placed in a prone position. All arthroscopic procedures were done with non-invasive distraction, thigh tourniquet. Two portals, one each side of Achilles tendon, 2,5-3,0 cm above the junction of posterosuperior surface of the calcaneus and the Achilles tendon. A 4,0 mm 30 degree oblique arthroscope and a rotatory 4mm burr were used. Fixation was done with dynamic cannulated screw from calcaneus into talus.

Results: Fusion occurred in all cases. Using the American Orthopaedic Foot and Ankle Society (AOFAS) scored system the patients averaged is 92,7. Twenty four patients (92,3%) were satisfied and two are not satisfied (7,7). No Complications were reported. All patients wore normal shoes.

Conclusions: Arthroscopic subtalar arthrodesis and open arthrodesis have similar results, with less morbidity in first one. It can be the chirurgical technique of choice for subtalar arthrodesis in all cases without hind-foot malalignment requiring correction.

Correspondence should be addressed to Ms Larissa Welti, Scientific Secretary, EFORT Central Office, Technoparkstrasse 1, CH-8005 Zürich, Switzerland