The J-sign, known as the lateral patellar tracking on anterior

Patellofemoral pain syndrome can be eliminated with posture alignment therapy. - Oregon Exercise Therapy

The J-sign, known as the lateral patellar tracking on anterior view

Control Group's Frequency Distribution by Category of Pain Levels

Qualitative visual assessment of the J-sign demonstrates high inter-rater reliability - ScienceDirect

Right hip imaging;a,b)A-p and lateral view of right hip(Charcot's

Diagnostics, Free Full-Text

Patellofemoral-disorders – OrthoPaedia

Patellar instability can be classified into four types based on patellar movement with knee flexion: a three-dimensional computer model analysis - ScienceDirect

Eunwook CHANG, Professor (Associate), PhD

Development of an innovative measurement method for patellar tracking disorder