Shoulder Disarticulation And Interscpaulothoracic Amputation Flashcards
The shoulder disarticulation is defined as the complete removal of the arm including the head of the humerus. An amputation proximal to the axilla or humeral neck is also functionally considered a shoulder disarticulation. The interscapulothoracis amputation involves the removal of the scapula, clavicle, and possibly ribs; this amputation is synonymous with the term “forequarter amputation”.
True
The primary etiology for a shoulder disarticulation is trauma (scarring usually present). This includes:
- farming/industrial accidents
- electrical burns
- amputation secondary to a brachial plexus injury
For both the interscapulothoracic patient and the shoulder disarticulation patient, the generation of excursion is quite diminished, although biscapular abduction may be present at both levels.
False
Prosthetic designs for interscapulothoracic shoulder disarticulation patients require increased coverage of the shoulder and/or rib cage to provide rotational control of the socket. Sockets may be constructed of a thermoset plastic such as the laminated socket as well as thermoplastic materials. It is not uncommon for these higher levels of amputation to be fit with a simple passive prosthesis. This completes the body image with a light and cosmetic solution while providing some function.
True
Interscapulothoracic and shoulder disarticulation patients typically have difficulty generating adequate force or excursion. Consequently, the prosthetist may have to use some means of enhancing or amplifying their capabilities. Methods of minimizing force requirements include the use of a forearm lift assist unit or an elbow design that provides a a spring-loaded mechanism that predisposes the elbow into flexion. Key goals for these high-level amputations include:
- making the prosthesis as lightweight as possible
- minimizing the force requirements of the patient
- minimizing the excursion requirements of the patient
