medial collateral ligament

Aetiology

Throwing injury

- seen in the throwing athlete

- repetitive microtrauma / valgus stress

- develop laxity

History

Initially

- lose velocity / accuracy

Develop medial pain

40% ulna nerve symptoms

Epidemiology

6 /100 000

- second most common dislocation after shoulder

Mechanism

FOOSH

Goal

Anatomy

1. Seebacher's 3 layers of the medial knee

Layer 1

- sartorius and sartorius fascia

Layer 2

- superficial MCL

- posterior oblique ligament

- semimembranosus

Layer 3

- deep MCL (meniscofemoral and meniscotibial ligament)

- posteromedial capsule 

2. MCL

Superficial MCL