American Academy of Orthopaedic Surgeons Annual Meeting
American Academy of Orthopaedic Surgeons Annual Meeting
April 04, 2018
1 min read

‘Excellent’ long-term outcomes for cementless posteriorly stabilized TKA

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NEW ORLEANS — Researchers observed ‘excellent’ outcomes in patients who underwent cementless posteriorly stabilized total knee arthroplasty, according to study results presented at the American Academy of Orthopaedic Surgeons Annual Meeting.

Steven F. Harwin headshot
Steven F. Harwin

“We have shown in this study that successful cementless total knee arthroplasty is design specific and excellent outcomes in the medium to long term can be achieved using the Triathlon cementless TKA system. We also showed that a well-designed posteriorly stabilized cementless implant can achieve initial and long term stable biological fixation,” Steven F. Harwin, MD, chief of advanced technology of total hip and total knee arthroplasty at Mount Sinai West in New York City, told

Harwin and colleagues identified 110 patients who underwent a total of 114 consecutive cementless posteriorly stabilized TKAs. After the first postoperative day, patients began a physical therapy program that including full weight bearing as tolerated. Investigators assessed all-cause implant survivorship. They used the Knee Society pain and function scores to assess clinical outcomes preoperatively and at each follow-up visit. At the preoperative and postoperative office visits, investigators collected range of motion, and patient complications from electronic medical records. The authors used the Knee Society radiographic evaluation system to perform a radiographic assessment.

Investigators found the all-cause survivorship was 98%. At last follow-up the mean Knee Society pain score was 93 points, the function score was 78 points and the mean ROM was –1° to 126°. Results from the radiographic evaluation demonstrated one patient had post-traumatic loosening of the tibial baseplate. There were no unforeseen complications and no unintended consequenses. – by Monica Jaramillo


Ref erence:

Harwin SF, et al. Poster #614. Presented at: American Academy of Orthopaedic Surgeons Annual Meeting; March 6-10, 2018; New Orleans.


Disclosure s : Harwin reports he is on the editorial or governing board for Orthopedics and Slack Incorporated; receives royalties from intellectual property, is a paid consultant and speaker for Stryker Orthopaedics; is on the editorial or governing board and receives publishing royalties and financial or material support from Thieme Inc., the Journal of Hip Surgery and the Journal of Knee Surgery.