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  • Title: [Correction of flexible lesser toe deformity : Transfer of the flexor digitorum longus tendon].
    Author: Arbab D, Frank D, Bouillon B, Lüring C.
    Journal: Oper Orthop Traumatol; 2017 Oct; 29(5):452-458. PubMed ID: 28676916.
    Abstract:
    OBJECTIVE: Realignment and pain relief of toes 2-5 by flexor-to-extensor tendon transfer of the flexor digitorum longus (FDL) muscle. INDICATIONS: As an isolated procedure in flexible proximal interphalangeal (PIP) joint flexion and/or flexible metatarsophalangeal (MTP) joint extension (hammer toe). In combination with a metatarsal osteotomy or PIP joint arthrodesis in case of flexible MTP joint extension. CONTRAINDICATIONS: General medical contraindications to surgical interventions. Stiffness of the PIP or MTP joint. SURGICAL TECHNIQUE: Plantar stab incision in the distal interphalangeal (DIP) flexion crease and tenotomy of the FDL tendon. More proximally transverse incision on the plantar aspect of the proximal phalanx and isolation of the FDL tendon. The tendon is split longitudinally along the raphe and the two limbs are transferred from plantar to the dorsal aspect of the proximal phalanx adjacent to the bone. The crossed limbs are sutured to each other under appropriate tension and corrected position of the toe. POSTOPERATIVE MANAGEMENT: Postoperative dressings for 3 weeks in corrected position. Subsequently tape dressing in plantar position for 6-12 weeks. Full weight bearing. RESULTS: A total of 24 toes with flexible PIP and/or MTP joint deformity were treated with a FDL tendon transfer. In 14 toes an isolated procedure was performed, in 10 cases an additional metatarsal osteotomy. Patients with operative treatment of the first ray, revision or reoperation were excluded. Mean follow-up was 8.4 (4-14) months. After 6 weeks 22 toes (92%) showed physiological alignment of the PIP and MTP joint. At the last follow-up, 4 (16%) toes had recurrent or persistent extension deformity of the MTP joint. There were no infections, overcorrections, impaired wound healing or transversal malalignment.
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