Question

1. despite the similarities in all prosthetic limbs, there are also many differences, especially with regards to where the prosthesis will be located. for example, a different type of artificial limb is needed after a transfemoral amputation vs. a transtibial amputation vs. a transhumeral amputation. just looking at these three terms, predict the difference in the types of amputations and the structure of the prosthetic limb each would require.
2. consider a prosthetic limb designed for an upper limb versus a lower limb. based on what you know so far in this course, what similarities do you think the prostheses would have in design? what differences in structure would be necessary in order for each limb to accomplish its specific functions? justify your answers with reasoning.

Explanation:

1. Transfemoral amputation is above - knee, transtibial is below - knee, and transhumeral is above - elbow. Transfemoral prosthetics need to support more weight and mimic hip - knee - ankle functions. Transtibial prosthetics focus on ankle - foot functions. Transhumeral prosthetics require shoulder - elbow - wrist - hand functionality.
2. Similarities: Both need to be lightweight, durable, and have a good fit for comfort and stability. Differences: Upper - limb prosthetics need to mimic fine motor skills for grasping and manipulation, so may have more complex hand or terminal - device designs. Lower - limb prosthetics need to support body weight and enable walking, so focus on shock - absorption and gait - replication.

Answer:

1. Transfemoral (above - knee) prosthetics support more weight and mimic hip - knee - ankle; transtibial (below - knee) focus on ankle - foot; transhumeral (above - elbow) require shoulder - elbow - wrist - hand functionality.
2. Similarities: Lightweight, durable, good fit. Differences: Upper - limb for fine motor skills, complex hand designs; lower - limb for weight - support and gait - replication.