IE 552 1

IE 552 Mechanics of Musculoskeletal

System

Dr. Andris Freivalds

Class #24

IE 552 2

Landsmeer Tendon-Pulley Model III

IE 552 3

Armstrong Tendon- Pulley Model

IE 552 4

Dynamic Tendon-Pulley Models

IE 552 5

2D Hand Model (Kong, 2001)

IE 552 6

2D Hand Model (Kong, 2001)

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Types of GripGrip I Grip II

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Finger Tendon Forces Grip I

Grip II

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Optimal Cylindrical Grip Handles

Finger Grip I Grip II Combined

Index 30 25 25-30

Middle 40 30 30-40

Ring 40 30 30-40

Little 25 20 20-25

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Validation – Meat Hooks

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Validation – Meat Hooks

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Validation – Meat Hooks

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Validation – Meat Hooks

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Validation – Direct Measurement ofTendon Forces in Power GripStudy Finger FDP FDS FDP/FDS

Bright, 1976 4-20 1.3-15

Schuind, 1976 4 0.6

Chao, 1976 Index 2.8 2.5 1.1

Middle 3.1 4.2 0.7

Little 3.4 3.4 1.0

Chao,An1978 Middle 3.4 3.8 0.9

An, 1985 Index 3.2-3.5 1.5-2.1

IE 552 15

Hand Grip Simulator

Load Cells

Freeze clamps

Force Deliver Unit(FDU)

FSRs

Wristjack®

Camera