TY - JOUR
T1 - Robotic Testing of Proximal Tibio-Fibular Joint Kinematics for Measuring Instability Following Total Knee Arthroplasty
AU - Barsoum, Wael K.
AU - Lee, Ho H.
AU - Murray, Trevor G.
AU - Colbrunn, Robb
AU - Klika, Alison K.
AU - Butler, S.
AU - van den Bogert, Antonie J.
N1 - Barsoum, W. K., Lee, H. H., Murray, T. G., Colbrunn, R., Klika, A. K., Butler, S., van den Bogert, A. J. (2011). Robotic testing of proximal tibio-fibular joint kinematics for measuring instability following total knee arthroplasty. Journal of Orthopaedic Research, 29(1), 47-52. doi: 10.1002/jor.21207
PY - 2011/1/1
Y1 - 2011/1/1
N2 - Pain secondary to instability in total knee arthroplasty (TKA) has been shown to be major cause of early failure. In this study, we focused on the effect of instability in TKA on the proximal tibio-fibular joint (PTFJ). We used a robotics model to compare the biomechanics of the PTFJ in the native knee, an appropriately balanced TKA, and an unbalanced TKA. The tibia ( n = 5) was mounted to a six-degree-of-freedom force/torque sensor and the femur was moved by a robotic manipulator. Motion at the PTFJ was recorded with a high-resolution digital camera system. After establishing a neutral position, loading conditions were applied at varying flexion angles (0°, 30°, and 60°). These included: internal/external rotation (0 Nm, ±5 Nm), varus/valgus (0 Nm, ±10 Nm), compression (100 N, 700 N), and posterior drawer (0 N, 100 N). With respect to anterior displacement, external rotation had the largest effect (coefficient = 0.650; p < 0.0001). Polyethylene size as well as the interaction between polyethylene size and flexion consistently showed substantial anterior motion. Flexion and mid-flexion instability in TKA have been difficult to quantify. While tibio-femoral kinematics is the main aspect of TKA performance, the effects on adjacent tissues should not be overlooked. Our data show that PTFJ kinematics are affected by the balancing of the TKA. © 2010 Orthopaedic Research Society. Published by Wiley Periodicals, Inc. J Orthop Res 29:47–52, 2011
AB - Pain secondary to instability in total knee arthroplasty (TKA) has been shown to be major cause of early failure. In this study, we focused on the effect of instability in TKA on the proximal tibio-fibular joint (PTFJ). We used a robotics model to compare the biomechanics of the PTFJ in the native knee, an appropriately balanced TKA, and an unbalanced TKA. The tibia ( n = 5) was mounted to a six-degree-of-freedom force/torque sensor and the femur was moved by a robotic manipulator. Motion at the PTFJ was recorded with a high-resolution digital camera system. After establishing a neutral position, loading conditions were applied at varying flexion angles (0°, 30°, and 60°). These included: internal/external rotation (0 Nm, ±5 Nm), varus/valgus (0 Nm, ±10 Nm), compression (100 N, 700 N), and posterior drawer (0 N, 100 N). With respect to anterior displacement, external rotation had the largest effect (coefficient = 0.650; p < 0.0001). Polyethylene size as well as the interaction between polyethylene size and flexion consistently showed substantial anterior motion. Flexion and mid-flexion instability in TKA have been difficult to quantify. While tibio-femoral kinematics is the main aspect of TKA performance, the effects on adjacent tissues should not be overlooked. Our data show that PTFJ kinematics are affected by the balancing of the TKA. © 2010 Orthopaedic Research Society. Published by Wiley Periodicals, Inc. J Orthop Res 29:47–52, 2011
KW - proximal tibio-fibular joint; total knee arthroplasty; kinematics; instability
UR - https://engagedscholarship.csuohio.edu/enme_facpub/159
U2 - 10.1002/jor.21207
DO - 10.1002/jor.21207
M3 - Article
VL - 29
JO - Journal of Orthopaedic Research
JF - Journal of Orthopaedic Research
ER -