Week 8

Question 1

The hand provides…
A. Support
B. Manipulation
C. Prehension
D. All of the above

Answer 1

D. All of the above

Question 2

Prehension

in relation to the hand

Answer 2

The ability of the fingers and thumb to grasp or seize, holding, securing, or picking up objects

Question 3

Power grip: a fist with intrinsic and extrinsic…
A. Extension
B. Flexion
C. Abduction
D. None of the above

Answer 3

B. Flexion
Power grip: a fist with intrinsic and extrinsic flexion

Question 4

The precision grip is a blank grip with blank hand muscles.

Answer 4

The precision grip is a light grip with small hand muscles.

Question 5

Grasp

Answer 5

Use of entire hand to hold an object

Question 6

Pinch

Answer 6

Varying use of thumb, index finger, and middle finger for precise object manipulation

Question 7

What are different grasp patterns?

Answer 7

Cylindrical
Spherical
Hook
Composite

Question 8

Cylindrical Grasp

Answer 8

Midrange flexion of digits
Grasping a tube-shaped object

Ex. Turning steering wheel

Question 9

Spherical Grasp

Answer 9

Varied flexion of digits
Grasping a rounded object

*Ex. Holding underside of bowling ball, unscrewing a lid

Question 10

Hook Grasp

Answer 10

Simultaneous flexion of PIPs and DIPs
Extension of MCPs

Ex. Carrying a bucket

Question 11

Composite Grasp

Answer 11

Maximal Flexion of all digits

Ex. Wringing out a towel

Question 12

What are different pinch patterns

Answer 12

Tip
Three-Jaw Chuck
Lateral (key)

Question 13

Tip Pinch

Answer 13

Precise movements
Distal tips of thumb and index finger

Ex. Threading a needle

Question 14

Three-Jaw Chuck Pinch

Answer 14

Tripod Pinch
Tip of thumb against tips of index and middle fingers

Ex. Writing with a pencil

Question 15

Lateral (key) Pinch

Answer 15

Pad of thumb against radial side of index finger

Ex. Unlock a door witha key, using a fork

Question 16

Smith’s Fracture and
Colles’ Fracture are what types of fractures?

Answer 16

Distal Radius Fracture

Question 17

Smith’s Fracture

Answer 17

Volar displacement of distal bone

Question 18

Colles’ Fracture

Answer 18

Dorsal displacement of distal bone

Question 19

Osteoarthritis

Answer 19

Wear-and-tear arthritis
Painful and debilitating

CMC joint of thumb is most common site in the hand

Question 20

Cumulative Trauma Disorders

Answer 20

Develop over time
Due to microtrauma from repetitive use

Ex. De Quervain’s tenosynovitis

Question 21

DeQuervain’s Tenosynovitis

Answer 21

Inflammations of APL and EPB tendons in the 1st dorsal compartment

Question 22

What is DeQuervain’s Tenosynovitis caused by?

Answer 22

Activities that involve ulnar deviation and repetitive thumb movements

Question 23

How are Peripheral Nerve Injuries Caused?

Answer 23

Nerve Compression
Nerve Damage
Nerve Laceration

*Characteristic sensory&motor loss based on location of the nerve injury

Question 24

Radial Nerve Injury

Answer 24

Radial nerve motor impairment
Loss of wrist, digit, and thumb extension

Question 25

What type of radial nerve injury will result in more involvement of loss of wrist and hand extension?
A. Distal
B. Proximal
C. Medial
D. Both A & B

Answer 25

B. Proximal
Proximal radial nerve injury will result in more involvement of loss of wrist and hand extension

A more distal injury will result in loss of digital extension

Question 26

What are some types of peripheral nerve injuries?

Answer 26

Radial Nerve Injury
Ulnar Nerve Injury
Median Nerve Injury