Abstract:Objective To evaluate the clinical effect of calcaneal displacement osteotomy combined with modified Kidner operation for treatment of flatfoot related with accessory navicular by clinical and imaging findings.Methods From January 2014 to December 2015,our department treated 19 cases (25 feet)flatfoot related with accessory navicular.There were 7 males (9 feet),12 females (16 feet);aged 18 to 52 years with an average age of (33.2±9.8) years.All patients underwent conservative treatment more than 6 months,All the patients were flexible flat foot,with varying degrees of flat feet and calcaneal valgus.The posterior tibial tendon was preformed and reconstructed with a wire anchor.The preoperative and final follow-up were evaluated by the Maryland function score and the VAS pain score.Before and after the operation,the patients underwent weight-bearing anteroposterior and lateral X-ray of foot and recorded the change of calcaneus inclination angle (Pitch),talocalcaneal angle (Kite) and talar first metatarsal (Meary ' s) angle in lateral X-ray offoot,the Talonavicular coverage angle (TCA) and the talar first metatarsal angle (T1M1) of the weight-bearing anteroposterior x-ray.Results All the patients were followed up.The follow-up time of 14~36 months,the average follow-up time was (23.6±7.1) months.At the final follow-up patients Maryland score was (92.1±2.1) points,VAS pain score was (0.7±0.9),compared with preoperative were statistically significant (P<0.01).Postoperative weightbearing lateral radiographs of calcaneus inclination angle,talocalcaneal angle and talar first metatarsal angle,weight-bearing anteroposterior radiograph of the talonavicular coverage angle,talus first metatarsal angle werecompared with those preoperative.The differences were statistically significant (P<0.01).All incisions were healed without internal fixation related complications.At the final follow-up,the pain of the foot disappeared,and the deformity was significantly improved.Conclusion The medial displacement calcaneal osteotomy combined with modified Kidner surgical for treatment of flatfoot related with accessory navicular can effectively correct the flatfoot deformity,postoperative foot function recovery,with less complications.
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