英语语法分析

Aim to analyse the cause of patellofemoral pain and to improve the operative Procedure.

目的分析骸股间疼痛的原因和改进其手术方法。

For a congruent patellofemoral articulation, the patella must track centrally in the trochlear groove.

在正常的髌股关节中，髌骨的活动轨迹应处于滑车沟的中心。

Background: Patellofemoral pain syndrome is one of the most common knee problems and may be related to abnormal patellar tracking.

背景知识概要：髌股关节疼痛综合症是最常见的膝关节病变之一，可能和异常的髌骨轨迹有关。