A simple fluoroscopy based technique for assessing 3D knee kinematics before, during, and after surgery

Banks, Scott; Banks, Anne Z.; Klos, Tiburtius V S; Cook, Frank F.

doi:10.1007/bfb0029289

Cited by 1 publication

(3 citation statements)

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“…The average accuracy of this measurement technique calculated in the in vitro study is ±0.8°for rotations about the three orthogonal axes, ±1.2 mm for sagittal plane translations, and ±4.0 mm for medial/lateral translations [3]. For all of the knees tested both the medial and the lateral femoral condyles translated posteriorly with knee flexion.…”

Section: Resultsmentioning

confidence: 85%

“…The measurement accuracy of this technique was characterized using controlled in vitro conditions [3, 4]. An intact frozen knee specimen was rigidly mounted to a biaxial (linear/rotary) servohydraulic testing machine (Instron model 8521, verified to ASTM E4 and E74 standards).…”

Section: Methodsmentioning

confidence: 99%

“…The purpose of this study was to determine whether normal three‐dimensional (3D) weight‐bearing knee kinematics were restored in two groups of subjects with different ACL reconstructions. To measure the dynamic weight‐bearing movements of the knee accurately, we used a technique described by Banks et al [3, 4]. This 3D measurement technique, which is a based on an established technique for measuring kinematics in patients with total knee arthroplasty [2], uses lateral fluoroscopy and provides an accurate noninvasive in vivo dynamic measurement of joint kinematics.…”

Section: Introductionmentioning

confidence: 99%

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Weight-bearing knee kinematics in subjects with two types of anterior cruciate ligament reconstructions

Izumi

Banks

et al. 2002

Knee Surg Sports Traumatol Arthrosc

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Weight-bearing knee kinematics in patients who received two types of anterior cruciate ligament reconstruction were studied using a fluoroscopy-based three-dimensional measurement technique. Eleven patients with more than 1-year follow-up and good or excellent results participated in this study. Six subjects received anterior cruciate ligament reconstruction using a multiply folded semitendinosus and gracilis tendon graft, and five received combined intra- and extra-articular anterior cruciate ligament reconstruction using the iliotibial tract. The step up/down activity of normal and operated knees was recorded using lateral fluoroscopy. A customized three-dimensional contour model was created from two orthogonal views of each knee and all six degrees of freedom of knee movement were determined using a model matching technique. Both the normal and the reconstructed knees exhibited posterior condylar translation and internal tibial rotation with knee flexion, consistent with previous reports of normal kinematics. There were no statistically significant differences in the axial rotations or lateral or medial condylar anterior/posterior translations between operated and normal knees or between the two groups of operated knees.

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Section: Resultsmentioning

confidence: 85%

Section: Methodsmentioning

confidence: 99%