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Minimally invasive imageless computer-navigated knee surgery: initial results.
J Arthroplasty. 2008 Apr; 23(3):441-5.JA

Abstract

The combination of imageless computer-aided surgery (CAS) and minimally invasive surgery (MIS) for total knee arthroplasty (TKA) has not been reported. This study presents the initial 30 procedures in which imageless CAS was combined with MIS for TKA by the senior author. Coronal alignment of femoral and tibial components with respect to the mechanical axis of the lower limb was measured when patients could achieve full extension. Component position was acceptable for all implants. The mean coronal tibial alignment was 90.35 degrees (range, 88 degrees -93 degrees) and mean coronal femoral alignment 90.10 degrees (range, 88 degrees -93 degrees) to the mechanical axis. Tourniquet time averaged 90 minutes (range, 60-118 minutes). There was no significant reduction in tourniquet time with increasing familiarity with the technique. Our results demonstrate that CAS combined with MIS for TKA maintains the accuracy of component alignment despite the minimally invasive approach. These initial results demonstrate no significant learning curve associated with the technique.

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Publisher Full Text (DOI)

Authors+Show Affiliations

Chandrasekaran S
Department of Orthopaedic Surgery, Sutherland Hospital, Sutherland NSW, Australia.
Molnar RB
No affiliation info available

MeSH

AgedAged, 80 and overArthroplasty, Replacement, KneeFemaleHumansIntraoperative ComplicationsKnee ProsthesisMaleMiddle AgedMinimally Invasive Surgical ProceduresOsteoarthritis, KneePostoperative ComplicationsProsthesis FailureSurgery, Computer-Assisted

Pub Type(s)

Journal Article

Language

eng

PubMed ID

18358385

Citation

Chandrasekaran, Sivashankar, and Robert B. Molnar. "Minimally Invasive Imageless Computer-navigated Knee Surgery: Initial Results." The Journal of Arthroplasty, vol. 23, no. 3, 2008, pp. 441-5.
Chandrasekaran S, Molnar RB. Minimally invasive imageless computer-navigated knee surgery: initial results. J Arthroplasty. 2008;23(3):441-5.
Chandrasekaran, S., & Molnar, R. B. (2008). Minimally invasive imageless computer-navigated knee surgery: initial results. The Journal of Arthroplasty, 23(3), 441-5. https://doi.org/10.1016/j.arth.2007.05.032
Chandrasekaran S, Molnar RB. Minimally Invasive Imageless Computer-navigated Knee Surgery: Initial Results. J Arthroplasty. 2008;23(3):441-5. PubMed PMID: 18358385.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Minimally invasive imageless computer-navigated knee surgery: initial results. AU - Chandrasekaran,Sivashankar, AU - Molnar,Robert B, Y1 - 2007/10/24/ PY - 2006/10/29/received PY - 2007/05/17/accepted PY - 2008/3/25/pubmed PY - 2008/6/27/medline PY - 2008/3/25/entrez SP - 441 EP - 5 JF - The Journal of arthroplasty JO - J Arthroplasty VL - 23 IS - 3 N2 - The combination of imageless computer-aided surgery (CAS) and minimally invasive surgery (MIS) for total knee arthroplasty (TKA) has not been reported. This study presents the initial 30 procedures in which imageless CAS was combined with MIS for TKA by the senior author. Coronal alignment of femoral and tibial components with respect to the mechanical axis of the lower limb was measured when patients could achieve full extension. Component position was acceptable for all implants. The mean coronal tibial alignment was 90.35 degrees (range, 88 degrees -93 degrees) and mean coronal femoral alignment 90.10 degrees (range, 88 degrees -93 degrees) to the mechanical axis. Tourniquet time averaged 90 minutes (range, 60-118 minutes). There was no significant reduction in tourniquet time with increasing familiarity with the technique. Our results demonstrate that CAS combined with MIS for TKA maintains the accuracy of component alignment despite the minimally invasive approach. These initial results demonstrate no significant learning curve associated with the technique. SN - 0883-5403 UR - https://www.unboundmedicine.com/medline/citation/18358385/Minimally_invasive_imageless_computer_navigated_knee_surgery:_initial_results_ DB - PRIME DP - Unbound Medicine ER -