Original articleFive- to 8-Year Results of the Uncemented Duracon Total Knee Arthroplasty System
Section snippets
Patients and Methods
Between August 1997 and March 1999, a prospective study was undertaken recruiting a cohort of 219 consecutive primary TKAs in 180 patients using the HA-coated Duracon prosthesis (Stryker Howmedica Osteonics). There were 108 women and 72 men. The indications for surgery were primary osteoarthritis (130 knees), rheumatoid arthritis (27 knees), avascular necrosis (17 knees), and posttraumatic osteoarthritis (16 knees). The mean age of the patients was 71 years (range, 42-91 years). Bilateral
Results
The mean preoperative knee score was 43.8 points (range, 0-95) at 5 years; this increased to 77.1 (range, 26-99). The mean preoperative functional score was 20.3 (range, 0-95); this increased to 63.4 (range, 0-100). Fig. 1 illustrates the scores over the 5-year assessment period.
The WOMAC scores all showed improvement, particularly in function. At 5 years minimum, the preoperative function score of 919 was reduced to 588, pain improved from 266 to 157, and stiffness was reduced from 124 to 56
Discussion
This study documents the results of the HA-coated Duracon Total Knee Replacement System at 5- to 8-year follow-up. Our survivorship of 98.6% is comparable not only with that of other HA-coated TKA studies, but also with those of the gold standard cemented designs 10, 11, 12, 13. Having achieved a 100% follow-up rate, we can be confident of our results in the intermediate follow-up period. To stand the test of time, longer term follow-up will be required.
The clinical and radiographic analysis
Acknowledgments
We thank Mr K. Ravikumar (Consultant Orthopedic Surgeon, Maidstone Hospital) and Mr A. Shetty (Consultant Orthopedic Surgeon, Medway Maritime Hospital) for their research into gap healing. We also thank Mrs A. P. Nicholl, orthopedic research associate at our hospital, for her help during the preparation of this article.
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Is Cementless Total Knee Arthroplasty Safe in Women Over 75 Y of Age?
2023, Journal of ArthroplastyCementless Posteriorly Stabilized Total Knee Arthroplasty: Seven-Year Minimum Follow-Up Report
2018, Journal of ArthroplastyInitial Stability of Cemented vs Cementless Tibial Components Under Cyclic Load
2017, Journal of ArthroplastyOutcomes of cementless unicompartmental and total knee arthroplasty: A systematic review
2017, KneeCitation Excerpt :Thirty-seven cohort studies reported functional outcomes following cementless TKA [17,27,28,30,32–36,38–41,43–48,50,51,53,55,57,58,61–65,68,69,71–75], while eight studies reported functional outcomes following cementless UKA [7,26,31,42,49,59,60,67]. Thirty-five cohort studies reported failure modes of cementless TKA [17,27–30,32,34–36,39–41,43–48,52,53,55–58,61–63,66,68–70,72–75] and seven cohort studies reported failure modes of cementless UKA [7,26,42,49,54,60,67]. Nine studies were level I studies [17,29,33,38,40,41,59,62,66], six studies were level II [43,47,53,55,58,75], three studies were level III [26,51,63] and 34 studies were level IV studies [7,27,28,30–32,34–37,39,42,44–46,48–50,52,54,56,57,60,61,64,65,67–74].
Ceramics in Bone Grafts and Coated Implants
2017, Materials and Devices for Bone DisordersLong-Term Survivorship and Clinical Outcomes Following Total Knee Arthroplasty
2015, Journal of ArthroplastyCitation Excerpt :The authors observed that patients had good objective and functional KSS scores (range, 38.8 to 80.1) at mean follow-up of 6.3 years (range, 4.0 to 7.6 years). Similarly, Chana et al [6] prospectively assessed the objective and functional outcomes of Duracon TKAs (n = 219 knees). After a minimum 5-year follow-up, they found that the objective and functional KSS scores were satisfactory (range, 20.3 to 63.4 points).
Partial funding for the post of the research associate was provided by Stryker UK Corporation.