Journal Article10.1055/S-0031-1299660
Functional outcomes used to compare single radius and multiradius of curvature designs in total knee arthroplasty.
Laurence E. Cook,Alison K. Klika,Caleb R. Szubski,James Rosneck,Robert M. Molloy,Wael K. Barsoum +5 more
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TL;DR: Analysis of primary total knee arthroplasty procedures which used either a SR or MR of curvature knee system supports the use of SR implants and provides evidence of improved outcomes in terms of function, stability, and pain.
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Abstract: A recent development to better recreate joint kinematics has been a change from a multiradius (MR) design to a single radius (SR) design. We analyzed 559 primary total knee arthroplasty (TKA) procedures which used either a SR (n = 426 Triathlon; Stryker Orthopaedics, Mahwah, NJ) or MR of curvature knee system (n = 133 Duracon; Stryker Orthopaedics, Mahwah, NJ) (79.3% follow-up; 705 total TKA procedures identified). Patients were administered a modification of the Knee Society score (KSS) (3.9 years average follow-up). The SR design showed improvements over the MR design in pain (p = 0.021), stability (p = 0.002), flexion (p = 0.006), ability to completely straighten the knee (p = 0.025), stair climbing (p = 0.0001), walking (p = 0.0001), use of assistive devices (p = 0.0005), postoperative knee score (p = 0.0005), and postoperative function (p < 0.0001). Analysis of the change in KSS knee (p = 0.002) and function scores (p = 0.002) from preoperative visit to postoperative follow-up favored the SR design as well. These data support the use of SR implants and provide evidence of improved outcomes in terms of function, stability, and pain.
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Citations
The Individual-Template System Combined with Individual Endoprosthesis: ConforMIS™ iUni G2, iDuo G2, and iTotal G2
Andre F. Steinert,Ulrich Nöth,Maximilian Rudert +2 more
- 01 Jan 2013
TL;DR: The use of personalized three-dimensional image-derived resurfacing implants, as well as individualized single-use instrumentation, has the potential to restore almost normal knee anatomy and kinematics and might therefore change the common surgical practice of knee arthroplasty.
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Quality of life and functional outcome after single-radius and multi-radius total knee arthroplasty.
Merrill Lee,Jerry Yongqiang Chen,Hao Ying,Pang Hee Nee,Darren Keng Jin Tay,Pak Lin Chin,Chia Shi Lu,Lo Ngai Nung,Yeo Seng Jin +8 more
TL;DR: While an SR femoral implant design has several theoretical biomechanical advantages, postoperative standardized KSCs and quality of life scores in this single-surgeon series do not show a clear advantage of one design over the other.
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Functional versus patient-reported outcome of the bicruciate and the standard condylar-stabilizing total knee arthroplasty.
TL;DR: Postoperative knee ROM and patient perception of knee function after primary TKA can be affected by the different prosthetic designs, however, functionality afforded by the bicruciate TKA is not equivalent to patient satisfaction.
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Comparison of Single‐Radius with Multiple‐Radius Femur in Total Knee Arthroplasty: A Meta‐Analysis of Prospective Randomized Controlled Trials
TL;DR: A meta‐analysis including prospective randomized controlled trials (RCTs) is updated to compare the clinical prognosis of patients receiving single‐radius TKA (SR‐TKA) or multi‐radiusTKA (MR-TKA), and whether there was clinical superiority for the single‐ radius prosthesis over the multi‐ radius prothesis in total knee arthroplasty.
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Sagittal flexion arc evaluation for a modern generation single-radius femoral component design:
David J. Deehan,Kanishka M. Ghosh,Alasdair P. Blain,L. Longstaff,Steven Rushton +4 more
- 23 Feb 2018
TL;DR: This work has cast doubt on the reliability under loaded conditions of the single-radius concept, but the close proximity of the flexion axes of each replaced knee in relation to the functional flexion axis of the native knee may be the true basis of this purported improved kinematic performance.
3
References
The axes of rotation of the knee.
TL;DR: The authors used a mechanical device to locate the FE and the LR axes of six fresh anatomic specimen knees, and images in planes perpendicular to the FE axis showed a circular profile for the femoral condyles.
555
Total knee arthroplasty in the octogenarian
TL;DR: This prospective clinical study of total knee arthroplasties for osteoarthritis in patients 80 years of age and over has shown that it is a reliable and cost-effective procedure for the octogenarian.
88
Early results of subvastus versus medial parapatellar approach in primary total knee arthroplasty
TL;DR: Regardless of the surgical approach, the anteroposterior tibial femoral angle improved significantly in both groups, and there was a significant difference in passive range of motion.
63
A biomechanical comparison between the single-axis and multi-axis total knee arthroplasty systems for the stand-to-sit movement.
TL;DR: The single-axis design requires less eccentric knee extensor muscle activation and exhibits greater medio-lateral stability than the multi-axis designs and could provide useful information to orthopedic knee surgeons and rehabilitative specialists.
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Corrigendum to ‘‘Ten to fourteen year survival and functional analysis of the AGC total knee replacement system’’
Richard L. Worland,Gonzalo Vazquez-Vela Johnson,Jose Alemparte,Douglas E. Jessup,Jonathan Keenan,Nelson Norambuena +5 more
TL;DR: The survival analysis at 14 years was 97% with revision for any reason as the endpoint and the authors continue to utilize this implant system.
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