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

Definition

Dorsal Intercalated Segmental Instability / CID

Anatomy

Scapholunate joint

- C shaped

- 2-3 mm thick dorsally with transverse fibres

- thin palmar

Dorsal extrinsic ligaments

- V shaped, onto trapezium