Patellar luxation

1. Def

1.1. Pathological condition of stifle in which medial patellar ligament become over trochlear ridge

2. Causes

2.1. Straight hind limb

2.2. Over stretching

2.3. Loss of muscle tone

2.4. Hormonal disturbance

2.5. Secondary to CNS disease

3. CL signs

3.1. Locked hind limb

3.2. Limb extended caudally

3.3. Difficult backing

3.4. Foot dragging

4. Treatment

4.1. Injection of counter irritant

4.2. Medial patellar

4.3. MPD