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ARTHROPLASTY IOT FINAL EXAM
UPDATED ACTUAL EXAM WITH CORRECT
SOLUTIONS.
what is it and what are the most common uses? - correct answer- reconstruction or replacement of a joint to relieve pain, improve or maintain ROM, and correct deformity. The most common uses of arthroplasty are for patients with OA, RA, avascular necrosis, congenital deformities or dislocations, and other systemic problems.
what are three different types? - correct answer- including surgical reshaping of the bones of the joints, replacement of part of a joint (hemiarthroplasty), and total joint replacement
replacement arthoplasty is available for what? - correct answer- elbows, shoulders, phalangeal joints of the fingers, wrists, hips, knees, ankles, and feet.
what can a THA be used for? - correct answer- OA, RA, and other conditions. Partial and total hip replacements are also used to treat hip fractures.
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how is a THA done? - correct answer- prosthesis (implant) replaces the ball and socket joint and upper shaft of the femur
what is the difference between cemented and non cemented THA? - correct answer- The socket can be "cemented" in place with polymethyl methacrylate, which bonds to the bone. The socket may also be inserted and not cemented ("cementless").Cementless THAs may provide longer-term prosthesis stability by facilitating biologic ingrowth of new bone tissue into the porous surface coating of the prosthesis.
who is cementless usually done on? like what age group? - correct answer- Although some surgeons use cementless devices for all patients, they are most often recommended for younger, more active patients and patients with good bone quality where bone ingrowth into the components can be readily achieved.
what is hip resurfacing? - correct answer- An alternative to hip replacement is hip resurfacing, which allows the femoral head to be preserved and reshaped rather than replaced. (In contrast, in a THA the prosthesis replaces the femoral head.) -resurfaced femoral head (ball) is then capped by a metal prosthesis
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hip resurfacing is perferable in what age groups? - correct answer- Hip resurfacing is a more favorable option for younger, active patients.
how long do you have to wait after resurfacing to start physical activity again? - correct answer- there is generally a 6-month waiting period before strenuous activity until strong muscles are built around the joint
Patients receiving a smaller femoral head have a higher rate of what? as compared to what? - correct answer- Patients receiving a smaller femoral head (including many women) have a higher failure rate with a resurfaced implant when compared with patients receiving a THA
main indications for total knee arthroplasty (TKA)? - correct answer- Unremitting pain and instability as a result of severe destructive deterioration of the knee joint are the main indications for total knee arthroplasty (TKA)
what may be used to immobilize the knee after surgery? - correct answer- A compression dressing may be used to immobilize the knee in extension immediately after the operation
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