impingement

Definition

Impingement between anterior distal tibial osteophyte and sulcus of the talus in dorsiflexion

Epidemiology

Seen in athletes with repetitive dorsiflexion

Football / soccer / ballet / gymnasts

Pathology

Anterior osteophytes

Soft tissue impingement - scar tissue in anterolateral gutter from recurrent ankle sprains

Bassett's ligament - thickened fascicle of the AITFL

History

First generation (late 70s early 80s) 

Results

Definition

Painful impingement of rotator cuff

- on anterior 1/3 of Acromion, CA ligament & ACJ

- causes tendinosis of the RC

Anatomy Subacromial Space

1.  Roof / CA Arch

- acromion

- CA ligament

- coracoid process