Abstract
Purpose
The incorrect restoration of the joint line during TKA can result in joint instability, anterior knee pain, limited range of motion, and joint stiffness. The joint line level is usually measured only on pre- and post-operative radiographs. Current knee navigation systems can now potentially support intra-operatively joint line restoration by controlling the exact amount of the bone-cartilage removed and the corresponding overall thickness of the components implanted. The aim of this study was to assess how well the joint line level is restored and the tibiofemoral overstuffing prevented when standard knee surgical navigation is used carefully also with these purposes. Intra-operative measurements during navigated TKA were taken.
Methods
Sixty-seven primary TKAs were followed prospectively. The variation before and after prosthesis component implantation of the joint line level, both in the femoral and tibial reference, was measured intra-operatively by an instrumented probe. Overstuffing was measured as the difference between the overall craniocaudal thickness of the femoral and tibial prosthesis components inserted and the thickness of the bone-cartilage removed.
Results
A significant elevation in the joint line level after prosthesis implantation was found with respect to the tibial reference (1.9 ± 2.4 mm, mean ± SD), very little to the femoral reference (0.3 ± 2.1 mm), perhaps accounted for the femur-first operative technique utilized. Overstuffing was on the average of 2.2 ± 3.0 mm.
Conclusions
These results suggest that a knee navigation system can also support well a proper restoration of the joint line level and limit the risk of overstuffing when relevant measurements are taken carefully during operation.
Level of evidence
III.
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References
Anderson KC, Buehler KC, Markel DC (2005) Computer assisted navigation in total knee arthroplasty: comparison with conventional methods. J Arthroplasty 20(suppl 3):132–138
Bathis H, Perlick L, Tingart M et al (2004) Alignment in total knee arthroplasty: a comparison of computer-assisted surgery with the conventional technique. J Bone Joint Surg Br 86:682–687
Bäthis H, Perlick L, Tingart M et al (2005) Intraoperative cutting errors in total knee arthroplasty. Arch Orthop Trauma Surg 125:16–20
Belvedere C, Catani F, Ensini A et al (2007) Patellar tracking during total knee arthroplasty: an in vitro feasibility study. Knee Surg Sports Traumatol Arthrosc 15:985–993
Biasca N, Wirth S, Bungartz M (2009) Mechanical accuracy of navigated minimally invasive total knee arthroplasty. Knee 16:22–29
Bong MR, Di Cesare PE (2004) Stiffness after total knee arthroplasty. J Am Acad Orthop Surg 12:164–171
Chauhan SK, Scott RG, Breidahl W et al (2004) Computer-assisted knee arthroplasty versus a conventional jig-based technique: a randomised, prospective trial. J Bone Joint Surg Br 86:372–377
Cope MR, O’Brien BS, Nanu AM (2002) The influence of the posterior cruciate ligament in the maintenance of joint line in primary total knee arthroplasty: a radiologic study. J Arthroplasty 17:206–208
Decking R, Markmann Y, Fuchs J, Puhl W, Scharf HP et al (2005) Leg axis after computer-navigated total knee arthroplasty: a prospective randomized trial comparing computer-navigated and manual implantation. J Arthroplasty 20:282–288
De Ladoucette A (2009) Computer-assisted revision of total knee arthroplasty. Knee Surg Sports Traumatol Arthrosc 17:1166–1171
Ensini A, Catani F, Leardini A et al (2007) Alignments and clinical results in conventional and navigated TKA. Clin Orthop Relat Res 457:156–162
Figgie HE, Goldberg VM, Heiple KG et al (1986) The influence of tibial-patellofemoral location on function of the knee in patients with the posterior stabilized condylar knee prosthesis. J Bone Joint Surg Am 68:1035–1040
Insall JN, Lachiewicz PF, Burstein AH (1982) The posterior stabilized condylar prosthesis: a modification of the total condylar design: two to four-year clinical experience. J Bone Joint Surg Am 64:1317–1323
Laskin RS (2002) Joint line position restoration during revision total knee replacement. Clin Orthop Relat Res 404:169–171
Maeno S, Kondo M, Niki Y et al (2006) Patellar impingement against the tibial component after total knee arthroplasty. Clin Orthop Relat Res 452:265–269
Martin JW, Whiteside LA (1990) The influence of joint line position on knee stability after condylar knee arthroplasty. Clin Orthop Relat Res 259:146–156
Matsueda M, Gengerke TR, Murphy M et al (1999) Soft tissue release in total knee arthroplasty: cadaver study using knees without deformities. Clin Orthop Relat Res 366:264–273
Minoda Y, Kobayashi A, Iwaki H et al (2010) The risk of notching the anterior femoral cortex with the use of navigation systems in total knee arthroplasty. Knee Surg Sports Traumatol Arthrosc 18:718–722
Ryu J, Saito S, Yamamoto K, Sano S et al (1993) Factors influencing the postoperative range of motion in total knee arthroplasty. Bull Hosp Jt Dis 53:35–40
Sato T, Koga Y, Sobue T et al (2007) Quantitative 3-dimensional analysis of preoperative and postoperative joint lines in total knee arthroplasty: a new concept for evaluation of component alignment. J Arthroplasty 22:560–568
Scuderi GR (2005) The stiff total knee arthroplasty. J Arthroplasty 20(suppl 2):23–26
Scuderi GR, Insall JN (1992) Total knee arthroplasty: current clinical perspectives. Clin Orthop Relat Res 276:26–32
Selvarajah E, Hooper G (2009) Restoration of the joint line in total knee arthroplasty. J Arthroplasty 24:1099–1102
Singerman R, Heiple KG, Davy DT et al (1995) Effect of tibial component position on patellar strain following total knee arthroplasty. J Arthroplasty 10:651–656
Sparmann M, Wolke B, Czupalla H et al (2003) Positioning of total knee arthroplasty with and without navigation support: a prospective, randomised study. J Bone Joint Surg Br 85:830–835
Stockl B, Nogler M, Rosiek R et al (2004) Navigation improves accuracy of rotational alignment in total knee arthroplasty. Clin Orthop Relat Res 426:180–186
Wyss TF, Schuster AJ, Münger P et al (2006) Does total knee joint replacement with the soft tissue balancing surgical technique maintain the natural joint line? Arch Orthop Trauma Surg 126:480–486
Yoshii I, Witheside LA, White SE et al (1991) Influence of prosthetic joint line position on knee kinematics and patellar position. J Arthroplasty 6:169–177
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Ensini, A., Catani, F., Biasca, N. et al. Joint line is well restored when navigation surgery is performed for total knee arthroplasty. Knee Surg Sports Traumatol Arthrosc 20, 495–502 (2012). https://doi.org/10.1007/s00167-011-1558-1
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DOI: https://doi.org/10.1007/s00167-011-1558-1