Excellent mid-term follow-up for a new 3D-printed cementless total knee arthroplasty
| Autor: | Eric B. Smith, Santiago Restrepo, William J. Hozack |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Male
Reoperation medicine.medical_specialty 3d printed Total knee arthroplasty Prosthesis Design 03 medical and health sciences Fixation (surgical) 0302 clinical medicine medicine Humans Orthopedics and Sports Medicine Registries 030212 general & internal medicine Arthroplasty Replacement Knee Aged Titanium 030222 orthopedics business.industry Middle Aged Prosthesis Failure Surgery Mid term follow up Printing Three-Dimensional Female Knee Prosthesis business Follow-Up Studies |
| Zdroj: | The Bone & Joint Journal. :32-37 |
| ISSN: | 2049-4408 2049-4394 |
| DOI: | 10.1302/0301-620x.103b6.bjj-2020-2096.r1 |
| Popis: | AimsCementless total knee arthroplasty (TKA) offers the potential for strong biological fixation compared with cemented TKA where fixation is achieved by the mechanical integration of the cement. Few mid-term results are available for newer cementless TKA designs, which have used additive manufacturing (3D printing). The aim of this study was to present mid-term clinical outcomes and implant survivorship of the cementless Stryker Triathlon Tritanium TKA.MethodsThis was a single institution registry review of prospectively gathered data from 341 cementless Triathlon Tritanium TKAs at four to 6.8 years follow-up. Outcomes were determined by comparing pre- and postoperative Knee Injury and Osteoarthritis Outcome Score for Joint Replacement (KOOS JR) scores, and pre- and postoperative 12-item Veterans RAND/Short Form Health Survey (VR/SF-12) scores. Aseptic loosening and revision for any reason were the endpoints which were used to determine survivorship at five years.ResultsAt mid-term follow-up, the mean KOOS JR score improved significantly from 33.14 (0 t0 85, standard deviation (SD) 21.88) preoperatively to 84.12 (15.94 to 100, SD 20.51) postoperatively (p < 0.001), the mean VR/SF-12 scores improved significantly from physical health (PH), 31.21 (SD 5.32; 23.99 to 56.77) preoperatively to 42.62 (SD 10.72; 19.38 to 56.82) postoperatively (p < 0.001) and the mental health (MH), 38.15 (SD 8.17; 19.06 to 60.75) preoperatively to 55.09 (SD 9.64; 19.06 to 66.98) postoperatively (p < 0.001). A total of 11 revisions were undertaken, with an overall revision rate of 2.94%, including five for periprosthetic joint infection (1.34%), three for loosening (0.80%), two for instability (0.53%), and one for pain (0.27%). The overall survivorship was 97.06% and survivorship for aseptic loosening as the endpoint was 98.40%, with a 99.5% survivorship of the 3D-printed tibial component.ConclusionThis 3D-printed cementless total knee system shows excellent survivorship at mid-term follow-up. This design and the ability to obtain cementless fixation offers promise for excellent long-term durability. Cite this article: Bone Joint J 2021;103-B(6 Supple A):32–37. |
| Databáze: | OpenAIRE |
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