• 1. The Fifth Department of Orthopedics, the 903th Hospital of Joint Logistics Support Force, Hangzhou Zhejiang, 310001, P.R.China;
  • 2. The Third Department of Orthopedics, Zhejiang Hospital, Hangzhou Zhejiang, 310001, P.R.China;
DING Shuchen, Email: hheellll@126.com
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Objective To evaluate the feasibility and short-term effectiveness of suture-bridge technique for Beavis type Ⅰ calcaneal tuberosity avulsion fractures. Methods Between July 2017 and July 2019, 6 patients with Beavis type Ⅰ calcaneal tuberosity avulsion fractures were treated with internal fixation by suture-bridge technique. They were 2 males and 4 females, with an average age of 70.3 years (range, 63-81 years).The time between injury and operation was 1-3 days (mean, 2 days).The mean fracture displacement measured on lateral X-ray films was 26.2 mm (range, 19.5-33.5 mm), and Thompson test of all patients were positive. The mean T-value of bone density was –2.8 (range, –3.3-–2.2). The visual analogue scale (VAS) score of pain was 6.67±0.82. The effectiveness of the treatment was evaluated by VAS score, range of motion (ROM) and plantar flexor strength of ankle joint, and ankle and hindfoot score system of American Orthopaedic Foot and Ankle Society (AOFAS). Results All patients were followed up 12-35 months (mean, 18.5 months). Incision infection occurred in 1 case, and the incisions of the remaining patients healed by first intention. X-ray film reexamination at 3 months after operation showed that all fractures healed. During follow-up, there was no complication such as failure of internal fixation or displacement of fractures. All patients were able to walk with full weight bearing and normal gait. The AOFAS score at 6 months after operation was 83-100 (mean, 96.0) and the excellent and good rate was 100%. The VAS score decreased gradually after operation, and significantly improved compared with that before operation (P<0.05), and reached 0 at 1 year after operation. The flexion and extension of the affected ankle and the plantar flexor strength significantly improved; the ROM of dorsal flexion reached (29.17±3.43)° and the ROM of plantar flexion reached (44.50±4.97)° at 1 year after operation. There was no significant significance between affected and healthy ankles (P>0.05). The plantar flexor strength was grade 4 in 1 case and grade 5 in 5 cases. Conclusion It is feasible to treat Beavis type Ⅰ calcaneal tuberosity avulsion fractures with the suture-bridge technique, and the short-term effectiveness is satisfactory.