Radiofrequency ablation of intra-articular venous malformations of the knee joint
10.3760/cma.j.cn114453-20200911-00494
- VernacularTitle:膝关节腔内静脉畸形的射频消融手术治疗
- Author:
Junbo QIAO
1
;
Junjie LIN
;
Junhua LI
;
Dexin ZHANG
;
Bin FANG
;
Xiaodi LI
;
Changkuan CHEN
;
Hongye YU
Author Information
1. 郑州大学第三附属医院血管瘤外科 450003
- Keywords:
Radiofrequency ablation;
Knee joint;
Venous vascular malformation
- From:
Chinese Journal of Plastic Surgery
2021;37(2):166-170
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To investigate the outcomes of therapeutic radiofrequency ablation (RFA) in unilateral intra-articular venous malformations (IAVMs) of the knee.Methods:The clinical data of 15 patients with intravascular venous malformation in the Third Affiliated Hospital of Zhengzhou University from February 2018 to May 2019 were retrospectively analyzed. There were 7 males and 8 females with an average age of 16 years (range, 5—25 years). All patients had unilateral knee involvement, ranging from localized lesions to diffuse extensive lesions. The radiofrequency ablation electrode needle with a diameter of 0.5 mm was selected and the power was adjusted to 25 W. Under the guidance of color ultrasound monitoring, the whole operation was carried out. The RFA electrode needle was inserted into the deepest site of the lesion and extracted by 1-mm graded movements until a point 1 mm from the surface of the lesion. Each ablation point was ablated for 10 to 30 seconds and multi-point ablation was done until the lesions were completely eliminated. Patients were followed up for 6 months to 1 year. Treatment outcomes were evaluated by functional activity, including extension, flexion, abduction, and adduction at the knee joint, and MRI findings, including intensity, shape, boundary, and degree of aggressiveness in the intra- and extraarticular cavities.Results:Included 15 patients; 12 had VMs in the knee joint cavity, and 3 had VMs involving both the intraarticular and extraarticular cavities (1 from the joint cavity to the calf, 1 from the joint cavity to the lower femur, and 1 from the intraarticular to the extraarticular cavity). All subjects underwent RFA, and the lesions were completely ablated and eradicated in a single operation. No recurrence was reported in the 6 months to 1 year follow-up. The knee joint remained symmetrical with the contralateral knee joint, without scarring, after the RFA.Conclusions:Radiofrequency ablation for the treatment of intra-articular venous malformation of the knee joint is a valuable minimally invasive surgical method with complete ablation, no complications, good prognosis and aesthetic appearance.
