Results of using helal osteotomy for surgical correction of the hammer toe

Introduction. The variety of types of small toes static deformities and the absence of a unified list of objective deformity indicators complicate it classification and affect on treatment outcomes. Thorough analysis of the hammer toe surgical treatment outcomes using a specific technique will allow us to solve of these problems. The purpose of the study: to analyze the results of using Helal osteotomy for correction of the hammer second toe. Materials and methods. Between 2018 and 2020, we performed Helal osteotomy in 40 patients with unilateral static foot deformity. These patients had a hammer toe in combination with hallux valgus. The results of the operations were analyzed in the study. Results. The use of Helal osteotomy allowed achieving complete correction of the hammertoe deformity of the second toe in 70% of patients. This led to an improvement in the clinical and functional parameters of the second toe. However, residual deformation of the toe was observed in 30% of cases, stiffness in the second metatarsophalangeal joint in 27.5 % of cases, and transitional metatarsalgia in 7.5% of cases. This indicates the insufficient effectiveness of the method. The main reason for the residual deformation of the second toe is the limited capabilities of the Helal osteotomy. These capabilities allow correcting hyperextension of the toe in the metatarsophalangeal joint only within 18.67 ± 3.27 degrees. This is especially noticeable with a large angle of dorsal deviation. Conclusion. The Helal osteotomy used to correct hammer toe deformities does not always produce the desired result. To more accurately select a treatment strategy and evaluate its success, it is necessary to develop a set of objective criteria based on clinical, radiographic and functional data. These criteria will allow classifying foot deformities, selecting the optimal treatment method and evaluating its effectiveness.