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  • Title: [Scarf osteotomy for the treatment of hallux valgus: a review of 123 cases with 4.8 years follow-up].
    Author: Freslon M, Gayet LE, Bouche G, Hamcha H, Nebout J, Pries P.
    Journal: Rev Chir Orthop Reparatrice Appar Mot; 2005 May; 91(3):257-66. PubMed ID: 15976670.
    Abstract:
    PURPOSE OF THE STUDY: Many different osteotomies can be used for the treatment of hallux valgus. The purpose of this study was to evaluate the Scarf osteotomy associated or not with phalangeal osteotomy and to search for deformation cutoff points beyond which corrections appear to be difficult to achieve. MATERIAL AND METHODS: This retrospective analysis included 87 patients (123 feet) among 130 who underwent hallux valgus surgery between October 1993 and November 2000. Mean follow-up was four years eight months. The serie included 83 women and 4 men. Mean age at surgery was 53.5 years. A Scarf diaphyseal osteotomy was performed in all patients associated or not with phalangeal osteotomy. Each patient was reviewed clinically and radiographically with anteroposterior and lateral views of the foot in the standing position. RESULTS: 84.6% of the patients were satisfied or very satisfied. There was a correlation between the index of satisfaction and clinical symptoms (metatarsalgia, stiff hallux, pain over exostosis). There was a statistically significant decrease in hallux valgus (31.2 degrees to 17.5 degrees ), of metatarsus varus (12.1 degrees to 7.5 degrees ), and articular angle of the distal metatarsus (13.3 degrees to 11.1 degrees ). Patients who had phalangeal osteotomy achieved the best hallux valgus correction (15 degrees versus 21.4 degrees ). Mean shortening of the first metatarsus was 2.2 mm with a decrease in the metatarsus-ground angle (19 degrees versus 20.1 degrees ). Cutoff limits for deformations which are difficult to correct satisfactorily were M1M2 angle > or = 15 degrees and distal metatarsal articular angle > or = 13 degrees . The overall Groulier score showed 70.7% very good and good results, 27.6% fair results and 1.7% poor results. DISCUSSION: The Scarf technique is a reliable method to achieve significant correction of hallux valgus deformation. It requires a rigorous technique with specific attention to the elevation of the first metatarsus and excessive shortening, two factors favoring metatarsalgia. Adding a phalangeal osteotomy can improve the radiological result, but it is very difficult to obtain satisfactory correction if the initial deformations are severe and associated. Rotation of the plantar fragment helps for better orientation of the articular surface of the first metatarsus but limits the correction of the metatarsus varus. Function is the basic objective of hallux valgus surgery and patient satisfaction is related solely to clinical symptoms.
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