A 66-year-old female asked:
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what causes extreme crunching under the patella nine months after total knee replacement?

2 doctor answers
Dr. Bryan Levey
26 years experience Pediatrics
Not sure what....: ..."extreme crunching" is, but if that knee was operated on nine months ago, you need to see your surgeon for an evaluation.
Answered on Nov 23, 2019
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Dr. John Michalski
35 years experience Orthopedic Surgery
Agree with seeing your orthopedic surgeon to evaluate for scar, synovitis, tight quads, possible implant loosening or failure.
Oct 27, 2012
Dr. John Michalski
35 years experience Orthopedic Surgery
Crunch patella: Likely scar or synovitis. Possible maltracking, loosening, implant position, noncompliance with stretching exercises.
Answered on Jun 11, 2019

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Tendonitis: Versus patellar implant loosening or improper alignment. Try ice, rest, range of motion exercise. If pain continues then get orthopaedic eval.
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