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find Author "CHENG Erlin" 2 results
  • Clinical application of anatomical locking plate in treatment of Rockwood type Ⅰ-Ⅲpatella fractures

    Objective To investigate the effectiveness of anatomical locking plate in the treatment of Rockwood type Ⅰ-Ⅲ patella fractures. Methods The clinical data of 16 patients with patella fractures who were admitted between November 2021 and January 2023 and met the selection criteria was retrospectively analyzed. There were 14 males and 2 females, with an average age of 44.5 years (range, 19-72 years). Causes of injuries included tumble in 12 cases and traffic accident in 4 cases. The fractures were rated as type Ⅰ in 2 cases, type Ⅱ in 9 cases, and type Ⅲ in 5 cases according to Rockwood classification criteria. The time from injury to operation ranged from 6 to 15 days, with an average of 9 days. After fracture reduction, an appropriate anatomical locking plate was selected for internal fixation. The operation time, intraoperative blood loss, and incision healing were recorded; the Lysholm score, Böstman patella fracture efficacy score, knee joint mobility, and visual analogue scale (VAS) score were used to evaluate the knee joint function and pain degree; X-ray films were used to review the fracture reduction and healing. Results The operation time was 65-100 minutes (mean, 75.3 minutes); the intraoperative blood loss was 10-35 mL (mean, 25.6 mL). All incisions healed by first intention after operation. All patients were followed up 11-26 months (mean, 19.7 months). X-ray films showed that the fractures were reduced satisfactorily, and all achieved bony healing with healing time of 3-5 months. At last follow-up, the Lysholm score was 90-95 (mean, 93.0); the Böstman patella fracture efficacy score was 27-30 (mean, 28.8), of which 12 cases were excellent and 4 were good; the VAS score was 0-1 (mean, 0.3). There was no significant difference in the range of motion of the knee joint between the healthy and affected sides [145° (140°, 150°) vs 145° (140°, 145°); Z=1.890, P=0.059]. Conclusion Choosing anatomical locking plates for Rockwood typeⅠ-Ⅲ patella fractures can achieve strong fixation with minimal surgical trauma, rapid recovery of knee joint function, and mild pain after operation.

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  • Application of Keystone flap in the repair of soft tissue defect of lower extremity

    ObjectiveTo study the effectiveness of Keystone flap in the repair of soft tissue defect of lower extremity.MethodsThe clinical data of 27 cases with soft tissue defects of lower extremity treated by Keystone flap between January 2018 and June 2020 were retrospectively analyzed. There were 18 males and 9 females, with an average age of 43.9 years (range, 8-63 years). The cause of soft tissue defects included skin tumor in 3 cases, ulcer in 2 cases, soft-tissue infection in 8 cases, trauma in 7 cases, and donor site defect after free or pedicled flap transplantation in 7 cases. Defect size ranged from 2.0 cm×1.5 cm to 15.0 cm×9.5 cm. The types of Keystone flaps included type Ⅰ in 2 cases, type Ⅱa in 16 cases, type Ⅱb in 1 case, type Ⅲ in 6 cases, and Moncrieff modified type in 2 cases. The area of flap ranged from 3.0 cm×1.5 cm to 20.0 cm×10.0 cm. The donor site was directly sutured (26 cases) or repaired with skin grafting (1 case).ResultsThe operation time was 45-100 minutes, with an average of 67.5 minutes; the hospitalization stay was 3-12 days, with an average of 8.5 days. Postoperative incision dehiscence occurred in 1 case, and flap marginal necrosis occurred in 2 cases, all of which were completely healed after dressing change; 1 case of incision was swollen and congested with tension blisters, which resolved spontaneously at 7 days after operation. The other flaps and the skin grafting survived and healed successfully, the wounds of recipient and donor sites healed by first intention. The healing time was 2-3 weeks (mean, 2.2 weeks). No pain occurred in all patients. All 27 cases were followed up 3-26 months (mean, 11.5 months). No obvious scar contracture and bloated skin flap were found. The texture and color of the skin in the recipient area were similar to those of the surrounding tissues and feel existed.ConclusionThe Keystone flap is a feasible and efficient way to repair soft tissue defect of lower extremity. Furthermore, the skin color and texture is similar to the surrounding tissue after healing.

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