Background There is no gold standard for the operative treatment of patients with Müller-Weiss disease (MWD). This study reports the mid-term follow-up results for at least 5 years following talonavicular-cuneiform (TNC) arthrodesis for Müller-Weiss disease. Methods A total of 15 patients undergoing TNC arthrodesis for MWD were retrospectively reviewed between January 2015 and August 2017. Two senior doctors assessed the radiographic results twice at each visit (preoperative, three months after the operation, and final follow-up). The clinical results and complications from preoperative and final follow-up were recorded. Results The mean follow up period was 74.0 (range 64 to 90) months. The calcaneal pitch angle, lateral Meary's angle, anteroposterior (AP) Meary's angle, AP talocalcaneal angle, and talonavicular coverage were significantly different before and three months after the operation (p < 0.05). There was no significant difference between the radiographic results of three months after the operation and the final follow-up (p > 0.05). The radiological measurements of the two senior doctors were calculated and found to be moderate to strong (ICC:0.899–0.995). The AOFAS, VAS, and SF-12 scores significantly improved at the last follow-up compared to those before the operation (p < 0.05). Two patients experienced early complications, four had late complications, and one underwent a second operation of midfoot fusion with calcaneal osteotomy. Conclusion This research confirms that using TNC arthrodesis for the treatment of MWD can substantially improve the clinical and radiographic results. These results were maintained until mid-term follow-up.
Background This retrospective study aimed to introduce a novel method for simultaneous Y-shape osteotomy combined with subtalar arthrodesis for calcaneus malunion and to evaluate the feasibility of this method. Methods We retrospectively analysed the clinical and imaging data of 11 patients with calcaneus malunion treated using Y-shape osteotomy and subtalar arthrodesis who were admitted to our hospital from June 2018 to October 2020. The patients included 9 males and 2 females aged from 24 to 69 years old, with an average age of 42.18 years. The clinical and radiological results were assessed with the Visual Analogue Scale (VAS) pain score and American Orthopaedic Foot and Ankle Society (AOFAS) hindfoot score. In addition, functional recovery and general quality of life were evaluated using the 12-Item Short-Form Survey (SF-12). Results All radiological parameters were significantly improved at the last follow-up, with increases of 14.37°, 9.18°, and 4.51 mm in the Böhler’s angle, calcaneal pitch angle, and talocalcaneal height, respectively, and decreases of 6.39 mm and 6.18° in the calcaneal width and Hindfoot alignment angle (p < 0.05). The mean AOFAS and VAS scores at the last follow-up improved compared with those preoperatively, from 34.18 ± 9.53 to 84.18 ± 11.59 and from 6.90 ± 1.22 to 1.90 ± 1.13, respectively (p < 0.05). The SF-12 physical and mental health scores were 49.65 ± 6.84 and 52.68 ± 7.88, respectively. Furthermore, the early postoperative complications included skin necrosis in one and sural neuralgia in one patient, and the late postoperative complication included ankle pain in one patient. No other complications, such as implant discomforts, malunion, nonunion and re-fracture, were presented. Conclusion These results indicate that Y-shape osteotomy combined with subtalar arthrodesis is an effective new method for the treatment of calcaneal malunion. Advantages include improvement of the anatomic shape of the calcaneus and union rates for subtalar arthrodesis.
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