Tro_Le_Tomy - Clinical and Functional Outcome After Lateral Trochlear Lengthening Osteotomy
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 发起方
- 入组人数
- 6
- 试验地点
- 1
- 主要终点
- (Change in) Lateral condyle index assessed by MRI of the knee
研究概览
简要总结
The purpose of this study is to evaluate the functional and clinical outcome of this new lengthening osteotomy of the lateral trochlea in patients with patella instability, trochlear dysplasia Dejour type A or B, short lateral articular trochlea quantified by the lateral condyle index and presence of a lateral trochlear bump.
详细描述
A short lateral articular trochlea leads to failure in stabilizing the patella close to full Extension of the knee. To address this type of pathology, a trochlear lengthening osteotomy was described. To date only case reports describing the clinical outcome of this new osteotomy exist and information on functional outcome regarding muscle strength and electromyography (EMG) data is lacking. The purpose of this study is to evaluate the functional and clinical outcome of this new lengthening osteotomy of the lateral trochlea in patients with patella instability, trochlear dysplasia Dejour type A or B, short lateral articular trochlea quantified by the lateral condyle index and presence of a lateral trochlear bump.
研究设计
- 研究类型
- Observational
- 观察模型
- Cohort
- 时间视角
- Prospective
入排标准
- 年龄范围
- 18 Years 至 —（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •2 years (as of September 2019) since conducting a lateral trochlear lengthening osteotomy
排除标准
- •Inability to provide informed consent
- •Neurological disorders potentially affecting lower extremity muscle strength.
- •Surgery involving the patellofemoral joint prior to the lateral trochlear lengthening osteotomy
结局指标
主要结局
(Change in) Lateral condyle index assessed by MRI of the knee
时间窗: at Baseline
Lateral condyle index assessed by MRI of the knee (preoperative (always conducted) and in the cases where they are available postoperative MRIs). The lateral condyle index was designed to measure the lateral trochlea by comparing the anterior cartilaginous trochlea (a) and the posterior aspect (p) \[(a:p)× 100\].
presence of a recurrent patellar dislocation/ radiological reduction of the trochlear bump postoperative by plain radiograph of the knee/ lateral view
时间窗: at Baseline
presence of a recurrent patellar dislocation postoperative by plain radiograph of the knee/ lateral view: * crossing sign: The sign is positive when the trochlear groove lies in same plane as anterior border of lateral condyle. It represents a flattened trochlear groove * double contour sign: The sign is positive when the anterior border of lateral condyle lies anterior to anterior border of medial condyle. It represents a convex trochlear groove/hypoplastic medial condyle * presence of a lateral trochlear bump prominence * the patellar height will be evaluated according to Insall-Salvati method (normal between 0.8 and 1.2) and Caton Deschamps method (normal between 0.6 and 1.3)
presence of a recurrent patellar dislocation/ radiological reduction of the trochlear bump postoperative by Skyline patellar view
时间窗: at Baseline
The trochlea form will be assessed, the existence of trochlear dysplasia will be confirmed and classified according to Dejour
次要结局
- Kujala Anterior Knee Pain Scale (AKPS)(at Baseline)
- Lysholm Knee Score(at Baseline)
- Tegner activity scale(at Baseline)
- Visual analog scale score (VAS)(at Baseline)
- Subjective Evaluation of the outcome of the operation(at Baseline)