A modified technique of two-staged extensor tendon reconstruction in zones 6-8 in a patient with absent palmaris/plantaris tendons: A case report

Abstract

Introduction: The indications for two-staged extensor tendon reconstruction are rare and only 14 previously reported cases were found in the literature. In these cases, silicone rods are inserted in the first stage. Few months later, the palmaris longus / plantaris tendon grafts are usually used to replace the silicone rods.

Case report: we encountered a patient with major defects of the extensor tendons of all fingers extending from the proximal one third of zone 6 to zone 8. The patient had no palmaris or plantaris tendons. We utilized a modified technique of reconstruction using the split flexor carpi radialis as the tendon graft and the flexor carpi ulnaris as the motor tendon. At final follow-up, there was full active extension of the fingers. However, there was limitation of wrist flexion because of the harvesting of both wrist flexors.

Discussion: We describe a modified technique of two-staged extensor tendon reconstruction which may be used in patients with absent palmaris/ plantaris tendons.

Conclusion: In patients with absent palmaris/ plantaris tendons and major defects of the extensor tendons of all fingers, the use of split flexor carpi radialis is an adequate alternative for reconstruction and gives a good functional outcome.

Keywords: Extensor tendon; Reconstruction; Technique; Two-staged.