Intraoperative Comparison of Measured Resection and Gap Balancing Using a Force Sensor: A Prospective, Randomized Controlled Trial.

Autor: Cidambi KR; Department of Orthopedic Surgery, Hoag Orthopedic Institute, Irvine, CA; Department of Orthopaedic Surgery, University of California, San Diego, San Diego, CA., Robertson N; Department of Orthopedic Surgery, Hoag Orthopedic Institute, Irvine, CA., Borges C; Department of Orthopedic Surgery, Hoag Orthopedic Institute, Irvine, CA., Nassif NA; Department of Orthopedic Surgery, Hoag Orthopedic Institute, Irvine, CA., Barnett SL; Department of Orthopedic Surgery, Hoag Orthopedic Institute, Irvine, CA.
Jazyk: angličtina
Zdroj: The Journal of arthroplasty [J Arthroplasty] 2018 Jul; Vol. 33 (7S), pp. S126-S130. Date of Electronic Publication: 2018 Feb 17.
DOI: 10.1016/j.arth.2018.02.044
Abstrakt: Background: For establishing femoral component position, gap-balancing (GB) and measured resection (MR) techniques were compared using a force sensor.
Methods: Ninety-one patients were randomized to undergo primary total knee arthroplasty using either MR (n = 43) or GB (n = 48) technique using a single total knee arthroplasty design. GB was performed with an instrumented tensioner. Force sensor data were obtained before the final implantation.
Results: GB resulted in greater range of femoral component rotation vs MR (1.5° ± 2.9° vs 3.1° ± 0.5°, P < .05) and posterior condylar cut thickness medially (10.2 ± 2.0 mm vs 9.0 ± 1.3 mm) and laterally (8.5 ± 1.9 mm vs 6.4 ± 1.0 mm). Force sensor data showed a decreased intercompartmental force difference at full flexion in GB (.8 ± 2.3 vs 2.0 ± 3.3u, 1u ≈ 15 N, P < .05).
Conclusion: GB resulted in a greater range of femoral component rotation and thicker posterior condylar cuts resulting in an increased flexion space relative to MR. Intercompartmental force difference trended toward a more uniform distribution between full extension and full flexion in the GB vs MR group.
(Copyright © 2018 Elsevier Inc. All rights reserved.)
Databáze: MEDLINE
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