Prosthetics Final Exam: Study Guide Questions & Answers: Updated Guide

What are the types of prosthetic knees available in order of least stability to most stability (likewise, most voluntary control to least voluntary control)? (AnsOutside hinges Single axis-constant friction Weight activated stance control Polycentric Manual locking What type of prosthetic knee is this describing? "Used with long residual limbs. Free motion in the sagittal plane. Exoskeleton designs. Least stability, most voluntary control." (Ans- Outside hinges What type of prosthetic knee is this describing?"Used with long residual limbs. Used for single speed ambulators (K1 and K2). Pretty unstable with more voluntary control." (Ans- Single axis-constant friction What type of prosthetic knee is this describing? "For patients with weak knee extensors (weak quads). Used with short residual limbs. May include an extension assist mechanism. Mechanical brake that locks when a vertical load is applied, but still also a single axis. Middle of the road for stability and voluntary movement." (Ans- Weight activated stance control What type of prosthetic knee is this describing? "Used with knee disarticulations and short residual limbs. Advantages: • Very stable • Imitates human knee • Avoids knee length discrepancy