Upper Px Practice Exam Flashcards
To determine the control system efficiency of an UEP:
Divide the force measured at the hanger by the force at the terminal device.
An axial pull test on an UEP should be:
A force of about 50lbs and should not displace the socket more than 1 inch
When the arm is over head, the trapezius muscle:
Positions the glenoid cavity downwards
Primary mover in glenohumeral extension
Deltoid, infraspinatus, latissimus Doris, tree major, triceps brachii
Glenohumeral horizontal flexion is of:
Deltoid, pectoralis major
Rhomboids originate on
Thoracic vertebrae and insert along the scapula from the root of the spine to the inferior angle
External rotation of the humerus is accomplished with:
Infraspinatus and teres minor
Internal rotation of humerus is by:
Subscapularis, teres major, pec major
Triceps actions:
Extends elbow, extends the glenohumeral joint
In the medium length BE there can be some residual pronation because:
Pronation teres is still largely intact
The amount of humeral flexion to fully flex the elbow of an AE prosthesis should not exceed
45 degrees
SD operates primarily by what motion
Scapula abduction
If AE amputee is having difficulties in flexing elbow of px what can help?
Add a cross back strap to the harness
Move the forearm lift loop distally,
Replace steel hook with aluminum one
The lever type excursion ampulifier provides increased excursion at expense of:
Force
Initial socket brim for a short AE amputation would be trimmed on a line
One-two incessant above the acromion
A non-prehensile activity may be illustrated by holding a
Suitcase
When fitting a socket for a VSBE (very short?) the mechanical elbow should flex to:
135 degrees
External movable sheave type excursion ampulifier is used with what type of prosthesis
SD