1. Which of the following terms does not fit the others?
A. TKA
B. arthroplasty
C. TKR
D. prosthesis
E. arthrodesis
Answer:
E. arthrodesis. Arthrodesis is fusion of a joint, not a replacement like all the others: TKA is total knee arthoplasty, arthroplasty is joint replacement, TKR is total knee replacement.
2. Choose the best answer. A hemiarthroplasty is:
A. a prosthesis with stronger moving parts
B. a prosthesis with smaller component parts
C. replacement on only one side of the joint
D. the same as a unicompartment joint replacement
Answer:
C. An example of a hemiarthroplasty would be replacement the ball of the humerus, but not the shoulder socket. A unicompartment joint replacement would involve one part of the joint, such as the medial compartment of the knee.
3. The most common indication for knee joint replacement is:
A. ACL reconstruction that fails
B. disabling painful arthritis
C. failed medial and lateral meniscectomies
D. knee trauma superimposed on obesity
E. chondromalacia
Answer:
Best answer is B. Note all the answers could be contributing factors.
4. Knee joint replacement could result in (select all that apply):
A. pain, blood clot, infection, meniscal tearing, and revision
B. chondromalacia, stiffness, blood clot, infection, and polyethylene wear
C. osteomyelitis, loosening, revision, polyethylene wear and radioluceny
D. tenodesis, revision, meniscectomy, osteoarthrosis, blood clot
Answer:
C. Osteomyelitis is bone infection. Loosening refers to loosening of the prosthesis in the natural bone. Revision is surgery to the initial joint replacement. Polyethylene wear is a complication related to the type of prosthesis. Radiolucency is loss of bone or decreased bone density in the natural bone around the prosthesis.