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. 2020 Jan 14:20:198-203.
doi: 10.1016/j.jor.2020.01.016. eCollection 2020 Jul-Aug.

Linked Anatomic Kinematic Arthroplasty: A Unique Approach to Balancing in Total Knee Arthroplasty

Seth Stake  1 , Safa C Fassihi  1 , Alex Gu  1 , James Burns  2 , George Thomas  1 , Evan H Argintar  2 , Kamran Sadr  3
Affiliations

Linked Anatomic Kinematic Arthroplasty: A Unique Approach to Balancing in Total Knee Arthroplasty

Seth Stake et al. J Orthop. .

Erratum in

Abstract

Traditional approaches to total knee arthroplasty (TKA) aim to reestablish a neutral mechanical axis of the lower extremity. However, many studies have shown great variation in normal knee anatomy, suggesting that the ideal alignment may not be identical for every patient. Linked Anatomic Kinematic Arthroplasty (LAKA) offers a novel kinematic approach to TKA. Using computer navigation, LAKA technique can optimize the kinematic alignment while ensuring that coronal alignment is kept within standard mechanical ranges. This article will outline the surgical approach to LAKA and briefly review the outcomes of this approach.

Keywords: Anatomic kinematic knee arthroplasty; Knee replacement; Surgical approach; TKA; Total knee arthroplasty.

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Figures

Fig. 1
Fig. 1
Advanced osteoarthritis in the lateral and patellofemoral compartments post-parapatellar arthrotomy.
Fig. 2
Fig. 2
A curette is used to remove residual cartilage on the weight bearing aspect of the condyles.
Fig. 3
Fig. 3
Intra-medullary distal femoral cutting jig's lateral flange placed at 5° valgus with evident space between jig and lateral femoral condyle.
Fig. 4
Fig. 4
Medial and lateral flanges of the jig lying flush with both femoral condyles after manipulation of the distal femoral cutting guide.
Fig. 5
Fig. 5
Knee flexed at 90° with the distal parallel to the proximal tibial cutting jig and extra-medullary device.
Fig. 6
Fig. 6
OrthAlign device suggesting tibial cut of 1° varus.
Fig. 7
Fig. 7
Knee placed in extension to check for stability.
Fig. 8
Fig. 8
Femoral sizing guide placed on distal femur with rectangular congruity.
Fig. 9
Fig. 9
Evident rectangular congruity of flexion space after placement of 4-in-1 jig.
Fig. 10
Fig. 10
A rectangular flexion block can be used to confirm flexion stability and congruity.
Fig. 11
Fig. 11
Trial implants in place prior to implantation of final components.
Fig. 12
Fig. 12
A) Anterior-Posterior and B) Lateral postoperative radiographs confirm kinematic alignment.
See this image and copyright information in PMC

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