Unicompartmental knee arthroplasties: robot vs. patient specific instrumentation

The Knee
Zahra JaffryJustin Cobb

Abstract

The technical reliability demonstrated by semi active robots in implant placement could render unicompartmental knee arthroplasties (UKAs) more favourable than they are currently. The relatively untested method using patient specific instrumentation (PSI), however, has the potential to match the accuracy produced by robots but without the barriers that have prevented them from being used more widely in clinical practice, namely operative time. Therefore this study took a step towards comparing the accuracy and time taken between the two technologies. Thirty-six UKAs were carried out on identical knee models, 12 with the Sculptor, 12 with PSI and 12 conventionally under timed conditions. Implant placement in these knees was then judged against that in a pre-operative plan. Tibial implant orientations and femoral implant positions and orientations were significantly more accurate in the PSI group with mean errors of 6°, 2 mm and 4° respectively, than the conventional group which had means of 9°, 4 mm and 10°. There was no significant difference between the robot and PSI generally except in tibial implant orientation (mean robotic error 3°) and tibial implant position did not vary significantly across all three groups. It was also...Continue Reading

References

Jan 26, 2006·The Journal of Bone and Joint Surgery. British Volume·J CobbB Davies
Feb 21, 2009·The Journal of Bone and Joint Surgery. American Volume·Andrew D PearleVolker Musahl
Feb 21, 2009·The Journal of Bone and Joint Surgery. American Volume·Wolfgang Fitz
Oct 5, 2011·The Journal of Bone and Joint Surgery. British Volume·J E LangR H Jinnah
Oct 31, 2013·Advances in Orthopedics·Milad MasjediJustin Cobb

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Citations

Sep 15, 2015·Expert Review of Medical Devices·Samik BanerjeeMichael A Mont
Aug 24, 2017·Knee Surgery, Sports Traumatology, Arthroscopy : Official Journal of the ESSKA·Abtin AlvandAndrew J Price
Oct 28, 2018·Computer Methods in Biomechanics and Biomedical Engineering·Adeel AqilJustin P Cobb
Dec 7, 2018·Clinical Orthopaedics and Related Research·Kartik LogishettyEdouard Auvinet
Mar 10, 2020·JBJS Reviews·Evan SmithJ Stuart Melvin
Sep 3, 2020·Journal of Orthopaedics and Traumatology : Official Journal of the Italian Society of Orthopaedics and Traumatology·Anurag MittalTae Kyun Kim
May 11, 2019·Knee Surgery, Sports Traumatology, Arthroscopy : Official Journal of the ESSKA·Christophe JacquetMatthieu Ollivier
Jul 2, 2021·The International Journal of Medical Robotics + Computer Assisted Surgery : MRCAS·Anurag MittalTae Kyun Kim

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