Assessment of tibiofemoral position in total knee arthroplasty using the active flexion lateral radiograph

Laidlaw, Michael S.; Rolston, Lindsey; Bozic, Kevin J.; Ries, Michael D.

doi:10.1016/j.knee.2009.07.006

Cited by 14 publications

(16 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Femoral rollback is an important factor to achieve deep flexion of a normal knee [22]. Femoral rollback leads to an increase in the lever arm of the quadriceps muscle, thus reducing the load on patellofemoral joint and increasing the ability to extend the knee without excessive force from the quadriceps muscle [36].…”

Section: Discussionmentioning

confidence: 99%

“…Banks et al [37] analyzed 16 different TKA prostheses which included PS, cruciate-retaining, mobilebearing implants and reported that 1.4°of knee flexion was gained per 1-mm increment of posterior femoral translation. Internal rotation of tibia is also essential in deep knee flexion, and it is observed during deep flexion in normal knee opposite to "screw-home" movement of full extension [22]. Shi et al [38] evaluated femoral rollback and tibial internal rotation in different bearings of high-flexion PS design knees.…”

Section: Discussionmentioning

confidence: 99%

“…A 3D scanner (Surveyor DS-2030; Laser Design, Inc, Minneapolis, MN) collected 3D images of the 2 prostheses. Femoral rollback was defined as the distance between the sulcus point which is the deepest point of the polyethylene insert and the contact point between the femoral component and the polyethylene insert at a certain flexion angle of the knee [22]. The measurements were performed at various angles of knee flexion (0°, 45°, 90°, and 135°) using the SolidWorks 3D modeling program (SolidWorks Co, Waltham, MA).…”

Section: Theory/calculationmentioning

confidence: 99%

See 2 more Smart Citations

Is High-Flexion Total Knee Arthroplasty a Valid Concept? Bilateral Comparison With Standard Total Knee Arthroplasty

Kim

Koh

et al. 2016

The Journal of Arthroplasty

View full text Add to dashboard Cite

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Theory/calculationmentioning

confidence: 99%

See 1 more Smart Citation

Is High-Flexion Total Knee Arthroplasty a Valid Concept? Bilateral Comparison With Standard Total Knee Arthroplasty

Kim

Koh

et al. 2016

The Journal of Arthroplasty

View full text Add to dashboard Cite

“…Edwards et al [23] reported 22 % of skin surface goniometric measurements and 45 % of visual measurements differed by 5°or greater from radiographic measurements. Laidlaw et al [24] showed postoperative active knee flexion is less than postoperative passive knee flexion using the active flexion lateral radiograph, and suggested active knee flexion may be an important outcome variable for assessing functional results after TKA. Therefore, we focused on active knee flexion angle using active flexion lateral radiographs.…”

Section: Discussionmentioning

confidence: 99%

Influence of intra-operative parameters on postoperative early recovery of active knee flexion in posterior-stabilized total knee arthroplasty

Nagai¹,

Muratsu²,

Matsumoto

et al. 2013

International Orthopaedics (SICOT)

View full text Add to dashboard Cite

Purpose Active knee flexion is more important for daily activities than passive knee flexion. The hypothesis is that the intra-operative parameters such as osteotomized bone thickness and soft tissue balance affect the postoperative active flexion angle in total knee arthroplasty (TKA). Therefore, we evaluate the influence of intra-operative parameters on postoperative early recovery of active flexion after posteriorstabilized (PS) TKA. Methods The subjects were 45 osteoarthritic knees undergoing primary PS TKA with anterior-reference technique. Intraoperative soft tissue balance was measured using an offset type tensor, and each osteotomized bone thickness was also measured. Pre-and postoperative active knee flexion angles were measured using lateral radiographs. Liner regression analysis was used to determine the influence of these intraoperative parameters on postoperative active flexion angles or recovery of active flexion angles. Results Pre-operative flexion angle was positively correlated with postoperative flexion angle (R=0.52, P=0.0002). Postoperative flexion angle was negatively correlated with the osteotomized bone thickness of femoral medial posterior condyle (R=−0.37, P=0.012), and femoral lateral posterior condyle (R=−0.36, P=0.015). Recovery of flexion angle was slightly negatively correlated with gap difference calculated by subtracting joint gap at extension from that at flexion between osteotomized surfaces (R=−0.30, P=0.046). ConclusionsThe osteotomized bone thickness of the femoral posterior condyle is a significant independent factor of postoperative flexion angles. This indicates that the restoration of the posterior condyle offset may lead to larger postoperative active flexion angles in PS TKA.

show abstract

“…At more than 6 months after operation (6-9 months) and when the subjects had recovered their range of knee flexion, a lateral radiograph of the knee was taken with active full flexion following Laidlaw's method. 12 Subjects were positioned supine on the X-ray table, and actively flexed their knees to the full range of flexion. In the lateral radiograph, an accurate lateral image of the tibia was taken.…”

Section: Rollback and Flexion Angle Measurementmentioning

confidence: 99%

A Comparison of Rollback Ratio between Bicruciate Substituting Total Knee Arthroplasty and Oxford Unicompartmental Knee Arthroplasty

Iriuchishima

Ryu

2017

J Knee Surg

View full text Add to dashboard Cite

The purpose of this study was to compare the rollback ratio in bicruciate substituting (BCS) total knee arthroplasty (TKA) and bicruciate-retaining Oxford unicompartmental knee arthroplasty (UKA). In this study, 64 subjects (64 knees) undergoing BCS-TKA (Journey II: Smith and Nephew) and 50 subjects (50 knees) undergoing Oxford UKA (Zimmer-Biomet holdings, Inc., IN) were included. Approximately 6 months after surgery, and when the subjects had recovered their knee range of motion, following the Laidlow's method, lateral radiographic imaging of the knee was performed with active full knee flexion. The most posterior tibiofemoral contact point was measured for the evaluation of femoral rollback (rollback ratio). Flexion angle was also measured using the same radiograph and the correlation of rollback and flexion angle was analyzed. As a control, radiographs of the asymptomatic contralateral knees of subjects undergoing Oxford UKA were evaluated (50 knees). The rollback ratios of the BCS-TKA, Oxford UKA, and control knees were 37.9 ± 4.9, 35.7 ± 4.2, and 35.3 ± 4.8% respectively. No significant difference in rollback ratio was observed among the three groups. The flexion angles of the BCS-TKA, Oxford UKA, and control knees were 123.8 ± 8.4, 125.4 ± 7.5, and 127 ± 10.3 degrees, respectively. No significant difference in knee flexion angle was observed among the three groups. Significant correlation between rollback ratio and knee flexion angle was observed ( = 0.002; Pearson's correlation coefficient = - 0.384). BCS-TKA showed no significant difference in rollback ratio when compared with control knees and Oxford UKA knees. The BCS-TKA design is likely to reproduce native anterior cruciate ligament and posterior cruciate ligament function, and native knee rollback.

show abstract

Assessment of tibiofemoral position in total knee arthroplasty using the active flexion lateral radiograph

Cited by 14 publications

References 30 publications

Is High-Flexion Total Knee Arthroplasty a Valid Concept? Bilateral Comparison With Standard Total Knee Arthroplasty

Is High-Flexion Total Knee Arthroplasty a Valid Concept? Bilateral Comparison With Standard Total Knee Arthroplasty

Influence of intra-operative parameters on postoperative early recovery of active knee flexion in posterior-stabilized total knee arthroplasty

A Comparison of Rollback Ratio between Bicruciate Substituting Total Knee Arthroplasty and Oxford Unicompartmental Knee Arthroplasty

Contact Info

Product

Resources

About