Cable Procedure

Question 0

For Hosmer VC hooks and hand: How many retainer plates must be provided if both hook and hand are to be used interchangeably?

Answer 0

2 retainer plates

Question 1

For VO hooks and TRS VC hooks: Where are the base plate and retainer placed on the socket?

Answer 1

Lateral to the proximal surface of the socket

Question 2

For Hosmer VC hooks and hand: Where is the placement of the base plate and retainer?

Answer 2

Lateral to the ulnar surface of the socket

Question 3

Crossbar assembly: Where is the placement of the crossbar?

Answer 3

Center of the triceps pad/cuff

Question 4

Cable Housing: How many degrees of elbow flexion when adjusting the cable housing?

Answer 4

90 degrees

Question 5

Cable Housing: How far should the housing extend proximally to the crossbar?

Answer 5

1/2”

Question 6

What does the Teflon liner prevents?

Answer 6

Friction and premature wearing of the cable

Question 7

Cable Assembly: Where is the hanger attached to the cable housing?

Answer 7

1 1/4” proximal to the cable housing

Question 8

What does the figure 8 harness includes?

Answer 8

Inverted “Y” strap, anterior suspension strap, axils loop, control attachment strap, crosspoint or ring

Question 9

Location of inverted “Y”?

Answer 9

Attached to the antero-proximal margins of the triceps pad/cuff

Question 10

Location of the anterior suspension strap?

Answer 10

Cross over the involved side shoulder and through the delto-pectoral groove

Question 11

Location of the axilla loop?

Answer 11

Encircles the shoulder on the sound side

Question 12

Location of the control attachment strap?

Answer 12

Should pass between spine and inferior angle of the scapula.

8” of residual strap material should be left to allow for adjustments

Question 13

Location of the crosspoint or ring?

Answer 13

2 - 3” distal to C7 spinous process, and 0 - 1/2” displacement towards the sound side

Question 14

When the patient states the harness is pinching in the axillary region on the sound side, what is causing the discomfort?

Answer 14

Crosspoint of the figure 8 harness is too close to the sound side

Question 15

Harness is comfortable, but it is difficult to operate terminal device without exaggerated movement, what is the cause?

Answer 15

Crosspoint of the figure 8 harness is too close to the amputated side

Question 16

Inverted “Y” suspension strap is digging into the shoulder, what is the cause?

Answer 16

1. The two attachment straps are too tight

2. Crosspoint of the figure 8 harness is too close to C7

Question 17

Inverted “Y” suspension strap is sliding off and over the shoulder, what is the cause?

Answer 17

Attachment site to the cuff is located too lateral