14 doctors weighed in:
What are the chances of going from needing a partial knee replacement to a full knee replacement?
14 doctors weighed in

Dr. Gwo-Chin Lee
Orthopedic Surgery
5 doctors agree
In brief: It depends
Typically, only approximately 10% of patients with knee arthritis will qualify for a partial knee replacement based on strict criteria.
However, depending on what your symptoms are, expectations, and most importantly discussions with your surgeon, the threshold to going from a partial knee replacement and ending up with a full knee replacement may change.

In brief: It depends
Typically, only approximately 10% of patients with knee arthritis will qualify for a partial knee replacement based on strict criteria.
However, depending on what your symptoms are, expectations, and most importantly discussions with your surgeon, the threshold to going from a partial knee replacement and ending up with a full knee replacement may change.
Dr. Gwo-Chin Lee
Dr. Gwo-Chin Lee
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Dr. Robert Purchase
Orthopedic Surgery
3 doctors agree
In brief: Not high
I agree that relatively few patients are good candidates for a partial knee replacement.
But the chances of needing a conversion to a full are very low if the surgeon selects the right patient. Assuming that the author of the question has been advised by a surgeon skilled at selecting appropriate candidates for a partial, i would say that the risk is low.

In brief: Not high
I agree that relatively few patients are good candidates for a partial knee replacement.
But the chances of needing a conversion to a full are very low if the surgeon selects the right patient. Assuming that the author of the question has been advised by a surgeon skilled at selecting appropriate candidates for a partial, i would say that the risk is low.
Dr. Robert Purchase
Dr. Robert Purchase
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1 comment
Dr. John Moor
Partials feel like normal knees whereas totals feel like artificial knees and have motion loss. But can only do partials if only part of the knee is worn out. If partials attain normal alignment after surgery, they should last as long as totals.
Dr. Christopher Hajnik
Orthopedic Surgery - Reconstruction
2 doctors agree
In brief: High
Following strict criteria, only 5-10% of patients with knee arthritis are appropriate candidates for partial knee replacement.
The goal of knee arthroplasty is to provide one successful surgery that lasts 20-25 yrs. Often, total knee replacement has a better chance of achieving this goal.

In brief: High
Following strict criteria, only 5-10% of patients with knee arthritis are appropriate candidates for partial knee replacement.
The goal of knee arthroplasty is to provide one successful surgery that lasts 20-25 yrs. Often, total knee replacement has a better chance of achieving this goal.
Dr. Christopher Hajnik
Dr. Christopher Hajnik
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Dr. Frederick Buechel, jr. md
Orthopedic Surgery
1 doctor agrees
In brief: Small if done well
Success rates of well installed partial knee replacements is in the 90% at 20 years reported this year by dr. Scott at the knee society meeting.
This is as good a total knee results but a good partial knee feels much more natural than a good total knee replacement. The difficult is getting a great installation every time. Using makopasty robotics consistently reproducible precision is expected.

In brief: Small if done well
Success rates of well installed partial knee replacements is in the 90% at 20 years reported this year by dr. Scott at the knee society meeting.
This is as good a total knee results but a good partial knee feels much more natural than a good total knee replacement. The difficult is getting a great installation every time. Using makopasty robotics consistently reproducible precision is expected.
Dr. Frederick Buechel, jr. md
Dr. Frederick Buechel, jr. md
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Dr. Christopher Hajnik
Orthopedic Surgery - Reconstruction
1 doctor agrees
In brief: High
Before i recommend partial knee replacement, xrays must demonstrate significant arthritic changes in only one of the three knee compartments, and the patient must convince me that their pain is emanating from that compartment.
Despite fellowship training in knee arthroscopy, knee replacement, and revision knee replacement, i'd still rather provide one long-lasting surgery.

In brief: High
Before i recommend partial knee replacement, xrays must demonstrate significant arthritic changes in only one of the three knee compartments, and the patient must convince me that their pain is emanating from that compartment.
Despite fellowship training in knee arthroscopy, knee replacement, and revision knee replacement, i'd still rather provide one long-lasting surgery.
Dr. Christopher Hajnik
Dr. Christopher Hajnik
Thank
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