Abstract
Purpose
This study aimed to investigate the accuracy of pinless navigation (BrainLAB® VectorVision® Knee 2.5 Navigation System) as an intra-operative alignment guide in total knee arthroplasty (TKA). The authors hypothesized that pinless navigation would reduce the proportion of outliers in conventional TKA, without a significant increase in the duration of surgery.
Methods
Between 2011 and 2012, 100 patients scheduled for a unilateral primary TKA were randomized into two groups: pinless navigation and conventional surgery. All TKAs were performed with the surgical aim of achieving neutral coronal alignment with a 180° mechanical axis. The primary outcomes of this study were post-operative radiographic assessment of lower limb alignment using hip–knee–ankle angle (HKA) and components placement using coronal femoral-component angle (CFA) and coronal tibia-component angle (CTA).
Results
There was a smaller proportion of outliers for HKA, CFA and CTA at 10, 2 and 2 % respectively, in the pinless navigation group, compared to 32, 16 and 16 %, respectively, in the conventional group (p = 0.013, p = 0.032 and p = 0.032, respectively). The mean CFA was also more accurate at 90° in the pinless navigation group compared to 91° in the conventional group (p = 0.002). There was no difference in the duration of surgery between the two groups (n.s.).
Conclusions
Pinless navigation improves lower limb alignment and components placement without a significant increase in the duration of surgery. The authors recommend the use of pinless navigation to verify the coronal alignments of conventional cutting blocks in TKA before the bone cuts are made.
Level of evidence
I.
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References
Aunan E, Kibsgård T, Clarke-Jenssen J, Röhrl SM (2012) A new method to measure ligament balancing in total knee arthroplasty: laxity measurements in 100 knees. Arch Orthop Trauma Surg 132(8):1173–1181
Baier C, Maderbacher G, Springorum HR, Zeman F, Fitz W, Schaumburger J, Grifka J, Beckmann J (2014) No difference in accuracy between pinless and conventional computer-assisted surgery in total knee arthroplasty. Knee Surg Sports Traumatol Arthrosc 22(8):1819–1826
Bauwens K, Matthes G, Wich M, Gebhard F, Hanson B, Ekkernkamp A, Stengel D (2007) Navigated total knee replacement: a meta-analysis. J Bone Joint Surg Am 89(2):261–269
Beldame J, Boisrenoult P, Beaufils P (2010) Pin track induced fractures around computer-assisted TKA. Orthop Traumatol Surg Res 96(3):249–255
Berning ET, Fowler RM (2011) Thermal damage and tracker-pin track infection in computer-navigated total knee arthroplasty. J Arthroplasty 26(6):977.e21-24
Brin YS, Nikolaou VS, Joseph L, Zukor DJ, Antoniou J (2011) Imageless computer assisted versus conventional total knee replacement: a Bayesian meta-analysis of 23 comparative studies. Int Orthop 35(3):331–339
Chen JY, Chin PL, Tay DK, Chia SL, Lo NN, Yeo SJ (2014) Less outliers in pinless navigation compared with conventional surgery in total knee arthroplasty. Knee Surg Sports Traumatol Arthrosc 22(8):1827–1832
Chen JY, Yeo SJ, Yew AK, Tay DK, Chia SL, Lo NN, Chin PL (2014) The radiological outcomes of patient-specific instrumentation versus conventional total knee arthroplasty. Knee Surg Sports Traumatol Arthrosc 22(3):630–635
Chin PL, Foo LS, Yang KY, Yeo SJ, Lo NN (2007) Randomized controlled trial comparing the radiologic outcomes of conventional and minimally invasive techniques for total knee arthroplasty. J Arthroplasty 22(6):800–806
Delp SL, Stuberg SD, Davies B, Picard F, Leitner F (1998) Computer assisted knee replacement. Clin Orthop Relat Res 354:49–56
Desai AS, Dramis A, Kendoff D, Board TN (2011) Critical review of the current practice for computer-assisted navigation in total knee replacement surgery: cost-effectiveness and clinical outcome. Curr Rev Musculoskelet Med 4(1):11–15
Fitz W, Sodha S, Reichmann W, Minas T (2012) Does a modified gap-balancing technique result in medial-pivot knee kinematics in cruciate-retaining total knee arthroplasty? A pilot study. Clin Orthop Relat Res 470(1):91–98
Fu Y, Wang M, Liu Y, Fu Q (2012) Alignment outcomes in navigated total knee arthroplasty: a meta-analysis. Knee Surg Sports Traumatol Arthrosc 20(6):1075–1082
Harvie P, Sloan K, Beaver RJ (2012) Computer navigation vs conventional total knee arthroplasty: five-year functional results of a prospective randomized trial. J Arthroplasty 27(5):667–672
Hetaimish BM, Khan MM, Simunovic N, Al-Harbi HH, Bhandari M, Zalzal PK (2012) Meta-analysis of navigation vs conventional total knee arthroplasty. J Arthroplasty 27(6):1177–1182
Hoke D, Jafari SM, Orozco F, Ong A (2011) Tibial shaft stress fractures resulting from placement of navigation tracker pins. J Arthroplasty 26(3):504.e5-8
Huang NF, Dowsey MM, Ee E, Stoney JD, Babazadeh S, Choong PF (2012) Coronal alignment correlates with outcome after total knee arthroplasty: five-year follow-up of a randomized controlled trial. J Arthroplasty 27(9):1737–1741
Jeffery RS, Morris RW, Denham RA (1991) Coronal alignment after total knee replacement. J Bone Joint Surg Br 73(5):709–714
Keyes BJ, Markel DC, Meneghini RM (2013) Evaluation of limb alignment, component positioning, and function in primary total knee arthroplasty using a pinless navigation technique compared with conventional methods. J Knee Surg 26(2):127–132
Kim YH, Park JW, Kim JS (2012) Computer-navigated versus conventional total knee arthroplasty a prospective randomized trial. J Bone Joint Surg Am 94(22):2017–2024
Landis JR, Koch GG (1977) The measurement of observer agreement for categorical data. Biometrics 33(1):159–174
Owens RF Jr, Swank ML (2010) Low incidence of postoperative complications due to pin placement in computer-navigated total knee arthroplasty. J Arthroplasty 25(7):1096–1098
Parratte S, Pagnano MW, Trousdale RT, Berry DJ (2010) Effect of postoperative mechanical axis alignment on the fifteen-year survival of modern, cemented total knee replacements. J Bone Joint Surg Am 92(12):2143–2149
Ranawat CS, Rose HA, Rich DS (1984) Total condylar knee arthroplasty for valgus and combined valgus-flexion deformity of the knee. Instr Course Lect 33:412–416
Ritter MA, Faris PM, Keating EM, Meding JB (1994) Postoperative alignment of total knee replacement. Its effect on survival. Clin Orthop Relat Res 299:153–156
Tingart M, Lüring C, Bäthis H, Beckmann J, Grifka J, Perlick L (2008) Computer-assisted total knee arthroplasty versus the conventional technique: how precise is navigation in clinical routine? Knee Surg Sports Traumatol Arthrosc 16(1):44–50
Wasielewski RC, Galante JO, Leighty RM, Natarajan RN, Rosenberg AG (1994) Wear patterns on retrieved polyethylene tibial inserts and their relationship to technical considerations during total knee arthroplasty. Clin Orthop Relat Res 299:31–43
Acknowledgments
This study was supported by the SingHealth Foundation Grant (SHF/FG538S/2011); fundings were provided for the use of this new pinless navigation system intra-operatively. The authors thank Yanni Xu and Stephanie Fook-Chong for their technical support.
Conflict of interest
The authors declare that they have no conflict of interest.
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Chen, J.Y., Chin, P.L., Li, Z. et al. Radiological outcomes of pinless navigation in total knee arthroplasty: a randomized controlled trial. Knee Surg Sports Traumatol Arthrosc 23, 3556–3562 (2015). https://doi.org/10.1007/s00167-014-3226-8
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DOI: https://doi.org/10.1007/s00167-014-3226-8