Is Tibiofemoral Subluxation Correctable in Unicompartmental Knee Arthroplasty?

Nam, Denis; Khamaisy, Saker; Gladnick, Brian P.; Paul, Santanu; Pearle, Andrew D.

doi:10.1016/j.arth.2013.03.001

Cited by 40 publications

(32 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Knees with medial compartmental arthritis may have slight lateral subluxation of the tibia relative to the femur as part of the disease process [15]. Since surgeries were performed on normal, non-arthritic knees in this study, the medial translation of the tibia observed at 45, 60 and 90°flexion may represent an unintended, yet desirable outcome of UKA [15].…”

Section: Discussionmentioning

confidence: 98%

Kinematics of passive flexion following balanced and overstuffed fixed bearing unicondylar knee arthroplasty

et al. 2015

View full text Add to dashboard Cite

Section: Discussionmentioning

confidence: 98%

Kinematics of passive flexion following balanced and overstuffed fixed bearing unicondylar knee arthroplasty

et al. 2015

View full text Add to dashboard Cite

“…The tibial intercondylar eminence can limit inward and outward knee movement, with the vertical axis for knee joint rotation being located in the medial tibial eminence (MTE) [5]. The presence of a tibiofemoral subluxation, evaluated using standing radiographs, is a predisposing factor for medial knee joint osteoarthritis and, thus, an indication for unicompartmental knee arthroplasty [6,7]. Because of this effect of tibiofemoral subluxation on the mechanics of the medial knee compartment, tibiofemoral subluxation may increase the incidence of intercondylar notch and tibial eminence impingement.…”

Section: Introductionmentioning

confidence: 99%

Preliminary diagnosis of medial meniscus posterior root tears using the Rosenberg radiographic view

Kodama

Furumatsu

Kamatsuki

et al. 2019

Knee Surg & Relat Res

View full text Add to dashboard Cite

Purpose: To verify the effectiveness of detecting medial meniscus posterior root tears (MMPRTs) using weightbearing posterior-anterior (PA) radiographs. Materials and methods: Twenty-three patients were diagnosed with an MMPRT using magnetic resonance imaging (Group A), with 23 matched individuals forming the control group (Group B). The distance between medial tibial eminence and the lateral edge of the medial femoral condyle (MTE-MFC distance) and medial joint space (MJS) width were measured on weight-bearing PA radiographs, with the knee flexed at 45°(Rosenberg view). Absolute medial meniscus extrusion (MME) was measured on magnetic resonance images. Results: The MTE-MFC distance was greater and the MJS width was smaller in Group A than Group B (7.7 ± 1.7 mm versus 6.0 ± 1.24 mm and 3.2 ± 0.8 mm versus 4.5 ± 0.7 mm, respectively; P < 0.05). The MTE-MFC distance and MJS width correlated with MME (r = 0.603 and 0.579, respectively; P < 0.05), and the extent of MME was greater in Group A than Group B (4.1 ± 1.1 mm versus 1.8 ± 1.5 mm, respectively; P < 0.05). Conclusions: MMPRTs increase the MTE-MFC distance and decrease the MJS width, with these measurements correlating to the MME. Therefore, measurement of the MTE-MFC distance and MJS width on the Rosenberg view could be a useful preliminary method for the diagnosis of an MMPRT.

show abstract

“…On the basis of the premise that in the "normal" limb, the mechanical axes of the femur and tibia are continuous lines passing through the center of the knee, and in pure coronal angulation (without subluxation) these axes still intersect at the knee center, we developed our previously published method for measuring TF subluxation based on the standing, AP radiographs. 13 In both knee compartments, the middistance pointes between the femoral and tibial condyles were found and horizontal line was drawn between them, the distance between the intersection points of the drawn line and the prior established tibial and femoral mechanical axes was measured and recorded as the TF subluxation (►Fig. 1).…”

Section: Methodsmentioning

confidence: 99%

Limb Alignment, Subluxation, and Bone Density Relationship in the Osteoarthritic Varus Knee

Khamaisy¹,

Nam

Thein

et al. 2014

J Knee Surg

Self Cite

View full text Add to dashboard Cite

Lower limb alignment, tibiofemoral (TF) subluxation, and bone density changes around the knee are significant factors related to the development of knee osteoarthritis (OA) and have great impact on its severity. The relation of each factor to knee OA was evaluated separately in previous studies; however, few studies have attempted to integrate their respective effects. The purpose of this study was to determine if an identifiable interaction exists between coronal limb alignment, TF subluxation, and bone density in the development of knee OA. A total of 120 patients with symptomatic, varus knee OA, with preoperative standing anteroposterior (AP) hip-to-ankle radiographs and a computed tomographic scan of the knee, were included in this study. Overall mechanical lower extremity alignment, and TF subluxation were measured on the AP radiographs, while trabecular bone density (TBD) was measured in four regions of interest for both the tibial plateau and distal femur in all patients. The patients were stratified into the following four cohorts: (A) high subluxation, high angulation; (B) high subluxation, low angulation; (C) low subluxation, high angulation; and (D) low subluxation, low angulation. The mean TBD in group B was significantly higher than in groups C and D (p = 0.003 and 0.03, respectively). In addition, the mean TBD in group A was significantly higher than in group C. This study highlights the relationship between limb alignment, knee subluxation, and bone density in the osteoarthritic knee. These preliminary results present a proof-of-principle, that bone mineral density affects the degree of coronal alignment and TF subluxation in OA.

show abstract

Is Tibiofemoral Subluxation Correctable in Unicompartmental Knee Arthroplasty?

Cited by 40 publications

References 10 publications

Kinematics of passive flexion following balanced and overstuffed fixed bearing unicondylar knee arthroplasty

Kinematics of passive flexion following balanced and overstuffed fixed bearing unicondylar knee arthroplasty

Preliminary diagnosis of medial meniscus posterior root tears using the Rosenberg radiographic view

Limb Alignment, Subluxation, and Bone Density Relationship in the Osteoarthritic Varus Knee

Contact Info

Product

Resources

About