Clinical effect of above-knee medial free-style perforator propeller flap in repairing deep wounds in and around the knee joint

Luo Yuming; Liu Mengdong; Yang Qiying; Gao Xiaowen; Zhu Liang; Li Jun

doi:10.3760/cma.j.cn501225-20240609-00220

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Article Navigation > CHINESE JOURNAL OF BURNS AND WOUNDS > > Accepted Manuscript

Zhu DZ,Yao B,Yan ZQ,et al.Research advances on the construction of an ideal scar model in vitro based on innovative tissue engineering technology[J].Chin J Burns Wounds,2022,38(10):983-988.DOI: 10.3760/cma.j.cn501120-20210723-00257.

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Luo Yuming,Liu Mengdong,Yang Qiying,et al.Clinical effect of above-knee medial free-style perforator propeller flap in repairing deep wounds around the knee joint and its surrounding areas[J].Chin J Burns Wounds,2025,41(4):1-8.DOI: 10.3760/cma.j.cn501225-20240609-00220.

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Clinical effect of above-knee medial free-style perforator propeller flap in repairing deep wounds in and around the knee joint

doi: 10.3760/cma.j.cn501225-20240609-00220

1.
Department of Burns and Cutaneous Surgery, the First Affiliated Hospital of Air Force Medical University, Xi'an 710032, China
2.
Department of Health Service Management and Medical Education, School of Military Preventive Medicine, Air Force Medical University, Xi'an 710032, China

Funds:

General Program of National Natural Science Foundation of China 81971834

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Corresponding author: Li Jun, Email: xjburns@fmmu.edu.cn
Received Date: 2024-06-09
Available Online: 2025-04-02

Abstract

Abstract

Objective To explore the clinical effect of above-knee medial free-style perforator propeller skin flap in repairing deep wounds in and around the knee joint. Methods This study was a retrospective observational study. From December 2020 to October 2023, the First Affiliated Hospital of Air Force Medical University admitted 13 patients who met the inclusion criteria and had deep burn wounds around the knee joint, including 9 males and 4 females, aged 16－70 years. After debridement, the defects in skin and soft tissue ranged in size from 5.0 cm×4.0 cm to 9.0 cm×7.0 cm. A free-style perforator propeller flap was designed and harvested from the medial superior aspect of the knee, using a perforator vessel as the pedicle. The size of the flap ranged from 6.0 cm×4.0 cm to 15.0 cm×7.0 cm. The larger paddle of the flap was used to repair the wound around the knee joint, while the smaller paddle assisted in closing the donor site wound. After surgery, the survival status of the flap, healing at the donor and recipient sites, and potential complications such as infection, effusion, and necrosis were closely observed. During follow-up, the flap appearance, color, and texture were evaluated, as well as wound healing status, scar contracture, and knee joint mobility at the recipient site, while scar condition at the donor site, sensory recovery, and complications were observed. Results Postoperatively, all 13 patients achieved successful flap survival. In one case, infection occurred at the edge of the flap but healed after appropriate treatment including drainage and dressing changes; the remaining 12 patients showed uneventful healing at both donor and recipient sites. During follow-up of 5 to 24 months, all 13 patients exhibited natural appearance, normal skin color, soft texture, and good elasticity. The recipient sites healed well without scar contracture or deformity, with full range of motion in the knee joint. A mild linear scar remained at the donor site on the inner thigh, with sensory function remaining normal and no numbness reported. Conclusions The above-knee medial free-style perforator propeller flap is easy to harvest and less invasive, making it an ideal method for repairing deep wounds in and around the knee joint.
- Burns,
- Wounds and injuries,
- Surgical flaps,
- Free-style perforator skin flap,
- Propeller flap,
- Wound repair,
- Knee joint

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