Total hip replacement exam questions
with all correct answers 2025 latest
update
What is arthroplasty? CORRECT ANSWERS It is the surgical replacement (or
reconstruction) of a joint
Many joints can be replaced with artificial ones
•Hips
•Knees
•Shoulders
•Ankles
•Finger/toe
Why do people get joint replacement surgery? CORRECT ANSWERS •Pain
•Limited mobility
•Deformity
•All of which can lead to a difficulty with ADL's and quality of life
Who is having Hip arthroplasty? CORRECT ANSWERS •Most common is patients with
Osteoarthritis
•Femur fractures (not able to be repaired by ORIF)
•AVN
•Rheumatoid arthritis
•Paget's disease
•Ankylosing spondylitis
Hip osteoarthritis CORRECT ANSWERS •Worn cartilage
•osteophytes (growth of bone spurs)
Avascular necrosis CORRECT ANSWERS Blood supply to hip is compromised leading
in bone cell death
•Dislocations
•Fractures (femoral head)
•Other causes not covered 10D
Hip prosthesis components CORRECT ANSWERS •Ball-replaces head of femur
•Stem-inserted in femur for stability
•Cup/shell-fits into acetabulum
•Liner-goes in between the shell and the ball
Types of hip arthroplasty CORRECT ANSWERS •Hip resurfacing
•Partial hip replacement (hemiarthroplasty)
•Total hip replacement (THR or THA)
, THA CORRECT ANSWERS total hip arthroplasty
who would get a hip resurfacing? CORRECT ANSWERS •Used in younger, active
patients
pros of hip resurfacing CORRECT ANSWERS •Preservation of bone on the thigh bone,
potentially making revision surgery easier.
•Reduced risk for dislocation (Better stress distribution to the top of the femur by
reducing the amount of stiff metal inside the marrow cavity.
•More resilient for activities of life such as sports, running, skiing etc.
•May last longer in younger patients than a full hip replacement.
cons of hip resurfacing CORRECT ANSWERS •Only made in metal-on-metal
articulation.
•The metal-on-metal bearing produces metal debris that release metal (cobalt and
chromium) ions into the body.
•There are few data on what will happen to these devices beyond 8 years.
•There is a 1-2% risk of fracture of the femoral neck. This risk is greatest in older
females with bone of sub-optimal quality.
•The surgery is more difficult and more exacting than hip replacement surgery and is
therefore not performed by many surgeons.
Partial hip arthroplasty CORRECT ANSWERS •Doesn't replace cup/shell
•Performed less often
•Usually reserved for young patients
•No arthritis, damage to acetabulum
Total hip arthroplasty (THA): implants (prosthesis) CORRECT ANSWERS cemented,
cementless, hybrid
Cemented CORRECT ANSWERS •Bone cement allows for immediate fixation of joint
•Allows for full weight bearing
•Last around 15 years
•Cement will wear over time so revision surgery most likely needed
•Recommended for older adults with comprised bone strength
Cementless CORRECT ANSWERS •In response to cement deterioration
•Fixed in place with screws/spikes
•Allows for growth of new bone in the joint
•Weight bearing limited for first 6 weeks
•Usually for younger more active people
•Most have good bone quality
Hybrid (not used often) CORRECT ANSWERS •Femoral ball is cemented
•Acetabular (shell) is uncemented
with all correct answers 2025 latest
update
What is arthroplasty? CORRECT ANSWERS It is the surgical replacement (or
reconstruction) of a joint
Many joints can be replaced with artificial ones
•Hips
•Knees
•Shoulders
•Ankles
•Finger/toe
Why do people get joint replacement surgery? CORRECT ANSWERS •Pain
•Limited mobility
•Deformity
•All of which can lead to a difficulty with ADL's and quality of life
Who is having Hip arthroplasty? CORRECT ANSWERS •Most common is patients with
Osteoarthritis
•Femur fractures (not able to be repaired by ORIF)
•AVN
•Rheumatoid arthritis
•Paget's disease
•Ankylosing spondylitis
Hip osteoarthritis CORRECT ANSWERS •Worn cartilage
•osteophytes (growth of bone spurs)
Avascular necrosis CORRECT ANSWERS Blood supply to hip is compromised leading
in bone cell death
•Dislocations
•Fractures (femoral head)
•Other causes not covered 10D
Hip prosthesis components CORRECT ANSWERS •Ball-replaces head of femur
•Stem-inserted in femur for stability
•Cup/shell-fits into acetabulum
•Liner-goes in between the shell and the ball
Types of hip arthroplasty CORRECT ANSWERS •Hip resurfacing
•Partial hip replacement (hemiarthroplasty)
•Total hip replacement (THR or THA)
, THA CORRECT ANSWERS total hip arthroplasty
who would get a hip resurfacing? CORRECT ANSWERS •Used in younger, active
patients
pros of hip resurfacing CORRECT ANSWERS •Preservation of bone on the thigh bone,
potentially making revision surgery easier.
•Reduced risk for dislocation (Better stress distribution to the top of the femur by
reducing the amount of stiff metal inside the marrow cavity.
•More resilient for activities of life such as sports, running, skiing etc.
•May last longer in younger patients than a full hip replacement.
cons of hip resurfacing CORRECT ANSWERS •Only made in metal-on-metal
articulation.
•The metal-on-metal bearing produces metal debris that release metal (cobalt and
chromium) ions into the body.
•There are few data on what will happen to these devices beyond 8 years.
•There is a 1-2% risk of fracture of the femoral neck. This risk is greatest in older
females with bone of sub-optimal quality.
•The surgery is more difficult and more exacting than hip replacement surgery and is
therefore not performed by many surgeons.
Partial hip arthroplasty CORRECT ANSWERS •Doesn't replace cup/shell
•Performed less often
•Usually reserved for young patients
•No arthritis, damage to acetabulum
Total hip arthroplasty (THA): implants (prosthesis) CORRECT ANSWERS cemented,
cementless, hybrid
Cemented CORRECT ANSWERS •Bone cement allows for immediate fixation of joint
•Allows for full weight bearing
•Last around 15 years
•Cement will wear over time so revision surgery most likely needed
•Recommended for older adults with comprised bone strength
Cementless CORRECT ANSWERS •In response to cement deterioration
•Fixed in place with screws/spikes
•Allows for growth of new bone in the joint
•Weight bearing limited for first 6 weeks
•Usually for younger more active people
•Most have good bone quality
Hybrid (not used often) CORRECT ANSWERS •Femoral ball is cemented
•Acetabular (shell) is uncemented
