Department of Traumatology and Orthopedics, Clinical Hospital of Pontificia Universidad Católica de Chile, Santiago, Chile.
Department of Traumatology and Orthopedics, Clinical Hospital of Pontificia Universidad Católica de Chile, Santiago, Chile.
Orthop Traumatol Surg Res. 2019 Jun;105(4):751-755. doi: 10.1016/j.otsr.2019.02.019. Epub 2019 Apr 15.
There are different techniques for gradual correction of angular deformities in lower limbs. The use of screws and non-absorbable filament have been described as an effective alternative for transitory hemiepiphysiodesis in pediatric population.
In pediatric population with genu valgum there are no differences in outcome between hemiepiphysiodesis, using screws and non-absorbable filament (SNAF) versus 8-plate.
Retrospective evaluation, 44 knees in 22 patients younger than 15 years, with idiopathic genu valgum, were operated on. One group (20 knees) was operated on with 8-plate technique and another group (24 knees) was operated on with SNAF technique. Initial and final intermalleolar distance (IMD) and mechanical lateral distal femoral angle (mLDFA) were compared, registering complications for each group. Mann-Whitney test was used for statistics, with significance value <0.05.
All patients achieved the expected mechanical axis correction. IMD and mLDFA significatively improved. There were no significant differences in magnitude and speed of correction when comparing the two techniques. Only one SNAF patient had a minor perioperative complication.
This report compares postoperative results between SNAF and 8-plate technique for correction of angular deformities in lower limbs. In this series of patients, significant clinical and radiological changes were observed between the initial and final values using both techniques, with no significant differences between them. Our group proposes the SNAF technique as an efficient, simple and cost-effective alternative to the traditional 8-plate technique, for the treatment of idiopathic genu valgum in children.
III, retrospective comparative study.
下肢的角度畸形有多种矫正技术。在儿科人群中，螺钉和不可吸收线的使用已被描述为一种临时骺板切开术的有效替代方法。
在患有膝内翻的儿科人群中，使用螺钉和不可吸收线（SNAF）与 8 板进行骺板切开术的结果没有差异。
回顾性评估，22 例年龄小于 15 岁的特发性膝内翻患者，共 44 膝。一组（20 膝）采用 8 板技术，另一组（24 膝）采用 SNAF 技术。比较两组的初始和最终踝间距离（IMD）和机械外侧股骨远端角（mLDFA），并记录每组的并发症。采用曼-惠特尼检验进行统计学分析，显著性水平<0.05。
所有患者均达到预期的机械轴矫正。IMD 和 mLDFA 显著改善。两种技术的矫正幅度和速度没有显著差异。只有 1 例 SNAF 患者有轻微的围手术期并发症。
本报告比较了 SNAF 和 8 板技术治疗下肢角度畸形的术后结果。在本系列患者中，两种技术的初始值和终值之间均观察到显著的临床和影像学变化，且两者之间无显著差异。我们的小组提出 SNAF 技术是治疗儿童特发性膝内翻的一种有效、简单、具有成本效益的替代传统 8 板技术的方法。
III 级，回顾性比较研究。
