Abstract:Objective: To investigate the clinical efficacy of ultrasonic guided closed reduction K-wires transverse internal fixation for metacarpal fracture. Methods: The data of 84 patients with metacarpal fractures treated in our hospital from March 2017 to March 2020 were retrospectively analyzed. The observation group of 36 patients were treated with closed reduction K-wires transverse internal fixation under ultrasound guidance,and active flexion and extension of fingers began on the first postoperative day.X-ray was re-examined 4-6 weeks after surgery and the K-wires were removed. In the control group, 48 patients received internal fixation with mini-plate, active flexion and extension functional exercise of fingers began on the first postoperative day, and X-ray was reviewed at 1st, 2nd, 3rd, 6th months. Results: Patients operated on the fracture of metacarpal bones were followed up for 12-18 months, with an average of 14.6 months. There were no serious complications such as infection, malformation or delay in healing. The observation group had significant advantages over the control group in operation time, intraoperative blood loss, fracture healing time and hospital stay (P<0.05). Total motion of flexion and extension (TAM) was used to assess hand function. The excellent and good rate was 100% in observation group. The excellent and good rate of the control group was also 100%. There was no significant difference between the two groups (P>0.05). Conclusion: Ultrasonic guided closed reduction K-wires transverse fixation in the treatment of metacarpal fracture is simple and easy to operate, with less radiation, less trauma, less bleeding, short operation time, and fast fracture healing, especially for pregnant women and teenagers, and it is worthy of clinical promotion.