NeuroTeach 16 - Milkmaid's grip

 Milkmaid's grip!!!

"motor impersistence of the hand"

Philippus Aureolus Theophrastus 'Paracelsus' Bombastus von Hohenheim (1493–1541)

first coined the term Chorea Sancti Viti

2) Pathophysiology

"combination of chorea & motor impersistence" Motor impersistence - inability to maintain tetanic muscle contraction - positioning & compensatory repositioning - independent of chorea - linearly progressive (marker of disease severity?) - frontal lobe

3) Examples of motor impersistence

- Milkmaid's grip - inability to maintain eye closure - 'Jack-in-the-box' tongue

4) Milkmaid's grip – definition

"alternating squeezing and releasing of the finger like a milking motion, when asked to maintain a constant, firm grip of examiner's fingers" - fluctuating pressure on handshake

5) Milkmaid's grip – features "alternating squeezing and releasing of the finger when asked to maintain a constant grip" - chorea - motor impersistence - positioning & compensatory repositioning

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