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Infection after TKR

Joint Replacements | Last Active: Feb 7 7:29am | Replies (26)

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@rebeccamary

TKA 10/17 constant low level pain, swelling
Arthroscopy 10/18 scar tissue release, synovial fluid suggested infection (high CRP, WBC, cloudy) but culture negative after 1 week
Joint stable, good ROM but continued pain dismissed by several surgeons.
2/2022: Night after a strenuous Friday hike, I woke up with extreme pain in the knee, unable to bend it or bear any weight. I had excruciating rigors, body aches and a fever. I figured Covid but tests negative. I saw my NP on Monday. Bloodwork consistent with knee infection. First orthopedist appt. Tuesday when I was feeling somewhat better. Synovial fluid cloudy, bloodwork showed high CRP, white cell percentage consistent with infection. In spite of my belief that this was a chronic infection, ortho deemed it acute and did D.A.I.R. surgery and replaced the plastic parts. 1 week in hospital. On moderate pain meds I was able to race around the hospital floor with my walker and walk unaided. High octane IV antibiotics in hospital and with PICc line for 6 weeks at home. 2 months out my knee is still painful but my wound has healed quickly and I have full ROM and extension. Getting stronger with PT.
Here is my issue. Cultures grew propionibacterium acnes (now a Cutibacterium), a slow growing gram positive anaerobic bacteria which indicates that my infection is chronic and not acute. The only cure is surgery to remove and replace the implant. But my orthopedist has decided that surgery is too risky because of my 3 prior procedures and that the only course of treatment is lifelong antibiotics. I am 72, not overweight, physically and mentally active, no significant health issues other than mild asthma and osteoarthritis with some mild osteoporosis. The Ortho left it up to the infectious disease PA to give me the bad news Why??? This is not the preferred treatment unless someone is unable to tolerate further surgery. Previous DAIR makes replacement less curative but should not preclude it. I suspect they are afraid of legal issues and just do not want to deal with me anymore. 2 year survival with this treatment at 2 years is 68% at best. I am already having side effects from meds. I have tried to contact other revision specialists but none have returned my calls/messages. Discouraged. Advice?

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Replies to "TKA 10/17 constant low level pain, swelling Arthroscopy 10/18 scar tissue release, synovial fluid suggested infection..."

Hello @rebeccamary, I know some decisions really don't make a lot of sense sometimes when the doctors can't do a good job explaining the whys and specifics for the treatments. I was not familiar with the procedure and found of couple of articles on the topic that may be helpful but I'm not sure.

The Role of Long-Term Antibiotic Suppression in the Management of Peri-Prosthetic Joint Infections Treated With Debridement, Antibiotics, and Implant Retention: A Systematic Review:
-- https://pubmed.ncbi.nlm.nih.gov/31955984/

"2021 — intravenous antibiotics after DAIR, or lifelong antibiotic suppression in patients with failure to clear infection and retention of infected."
-- Cost-effectiveness of Single vs Double Debridement and Implant Retention for Acute Periprosthetic Joint Infections in Total Knee Arthroplasty: A Markov Model: https://www.arthroplastytoday.org/article/S2352-3441(21)00150-3/pdf

I'm tagging @sueinmn to see if she may have some thoughts on why the surgery would be considered risky this time around.

Thanks for getting right back to me and for the complete articles. The issue in my case is that both the orthopedic surgeon and infectious disease NP agree that my infection is chronic and not acute. This literature clearly confirms that D.A.I.R. is not appropriate. I do not question his call for only D.A.I.R. at initial presentation. Only that now it is most likely chronic, they do not recommend revision and are loathe to tell me why.

Glad you trust him, that's important. I just wonder about lifetime antibiotics, if the infection is gone why would you need them? I'm sure you're eating, etc., properly to enhance your body's coping mechanism.