Swan-Neck Deformity.

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Abstract

Conflict of interest statement: Disclosure: Robert Lane declares no relevant financial relationships with ineligible companies. Disclosure: Shivajee Nallamothu declares no relevant financial relationships with ineligible companies. 5. Orthop Traumatol Surg Res. 2023 Feb;109(1S):103464. doi: 10.1016/j.otsr.2022.103464. Epub 2022 Oct 29. Lesser-toe deformity. Darcel V(1), Piclet-Legré B(2). Author information: (1)Service de chirurgie orthopédique et Traumatologique, maison de santé protestante de Bordeaux-Bagatelle, Bordeaux, France. Electronic address: v.darcel@mspb.com. (2)Centre du Pied, La Ciotat, Marseille, France. Lesser-toe deformity is frequent and varied, with severe functional impact. In elderly subjects, it leads to loss of autonomy and increases the risk of falls. The aim of the present study was to provide an update on management, addressing 5 questions. What are the normal anatomy and pathophysiology? These acquired deformities mainly result from imbalance between the intrinsic and extrinsic muscles of the foot or from capsule-ligament stabilizer failure. How to analyze the deformity? It is important to identify the cause, site, reducibility and metatarsophalangeal joint stability. What are the main deformities and how should they be classified? Classifications used to be based on confusing terminology as the deformities were poorly defined. The French Foot Surgery Association (AFCP) therefore validated a classification with standardized, exhaustive and reproducible morphologic descriptions. What treatments are there? Treatment needs to take account of the cause. Footwear adaptation, physiotherapy and podologic measures are in first line, with surgery in second line. Surgery concerns soft tissues (tendon lengthening, tendon transfer, arthrolysis, plantar plate repair), bone (metatarsal and phalangeal osteotomy) and joints (replacement and fusion), with percutaneous and open approaches. What are the treatment strategies? Surgery is performed sequentially, from proximal to distal, if necessary. Options are set out in the decision-trees included in this article. LEVEL OF EVIDENCE: V, expert opinion. Copyright © 2022. Published by Elsevier Masson SAS. DOI: 10.1016/j.otsr.2022.103464