TENNIS ELBOW

• Common extensor origin enthesopathy - also seen in golfers.

• dominant arm in tennis players and leading arm in golfers

• mucinous degeneration and disorganisation involving the extensor carpii radialis brevis (ECRB).

• one third of cases also involve the extensor digitorum communis.

• Clinical features suggest diagnosis in most cases • High signal on Coronal fluid sensitive sequences

• Intense vascularity can be misdiagnosed as partial tear.

• MRI can overcall partial tears actually due to neovascularity • RCL involvement said to worsen prognosis • Loss of tendon reflectivity on US typical • Increased vascularity very common and useful to confirm diagnosis

• RCL represented by the deepest fibres