TY - JOUR
T1 - Knee kinematics and kinetics are associated with early patellofemoral osteoarthritis following anterior cruciate ligament reconstruction
AU - Culvenor, A. G.
AU - Perraton, L.
AU - Guermazi, A.
AU - Bryant, A. L.
AU - Whitehead, T. S.
AU - Morris, H. G.
AU - Crossley, K. M.
PY - 2016/9/1
Y1 - 2016/9/1
N2 - Objective Patellofemoral osteoarthritis (PFOA) commonly occurs following anterior cruciate ligament reconstruction (ACLR). Our study aimed to compare knee kinematics and kinetics during a hop-landing task between individuals with and without early PFOA post-ACLR. Design Forty-five individuals (mean ± SD 26 ± 5 years) 1–2 years post-ACLR underwent 3T isotropic MRI scans and 3D biomechanical assessment of a standardised forward hop task. Knee kinematics (initial contact, peak, excursion) in all three planes and sagittal plane kinetics (peak) were compared between 15 participants with early PFOA (MRI-defined patellofemoral cartilage lesion) and 30 participants with no PFOA (absence of patellofemoral cartilage lesion on MRI) using analysis of covariance (ANCOVA), adjusted for age, BMI, sex and the presence of early tibiofemoral OA. Results Compared to participants without PFOA, those with early PFOA exhibited smaller peak knee flexion angles (mean difference, 95% confidence interval [CI]: −5.2°, −9.9 to −0.4; P = 0.035) and moments (−4.2 Nm/kg.m, −7.8 to −0.6; P = 0.024), and greater knee internal rotation excursion (5.3°, 2.0 to 8.6; P = 0.002). Conclusions Individuals with early PFOA within the first 2-years following ACLR exhibit distinct kinematic and kinetic features during a high-load landing task. These findings provide new information regarding common post-ACLR biomechanical patterns and PFOA. Since management strategies, such as altering knee load, are more effective during the early stages of disease, this knowledge will help to inform clinical management of early PFOA post-ACLR.
AB - Objective Patellofemoral osteoarthritis (PFOA) commonly occurs following anterior cruciate ligament reconstruction (ACLR). Our study aimed to compare knee kinematics and kinetics during a hop-landing task between individuals with and without early PFOA post-ACLR. Design Forty-five individuals (mean ± SD 26 ± 5 years) 1–2 years post-ACLR underwent 3T isotropic MRI scans and 3D biomechanical assessment of a standardised forward hop task. Knee kinematics (initial contact, peak, excursion) in all three planes and sagittal plane kinetics (peak) were compared between 15 participants with early PFOA (MRI-defined patellofemoral cartilage lesion) and 30 participants with no PFOA (absence of patellofemoral cartilage lesion on MRI) using analysis of covariance (ANCOVA), adjusted for age, BMI, sex and the presence of early tibiofemoral OA. Results Compared to participants without PFOA, those with early PFOA exhibited smaller peak knee flexion angles (mean difference, 95% confidence interval [CI]: −5.2°, −9.9 to −0.4; P = 0.035) and moments (−4.2 Nm/kg.m, −7.8 to −0.6; P = 0.024), and greater knee internal rotation excursion (5.3°, 2.0 to 8.6; P = 0.002). Conclusions Individuals with early PFOA within the first 2-years following ACLR exhibit distinct kinematic and kinetic features during a high-load landing task. These findings provide new information regarding common post-ACLR biomechanical patterns and PFOA. Since management strategies, such as altering knee load, are more effective during the early stages of disease, this knowledge will help to inform clinical management of early PFOA post-ACLR.
KW - Anterior cruciate ligament
KW - Biomechanics
KW - Magnetic resonance imaging
KW - Osteoarthritis
KW - Patellofemoral joint
UR - http://www.scopus.com/inward/record.url?scp=84971590287&partnerID=8YFLogxK
U2 - 10.1016/j.joca.2016.05.010
DO - 10.1016/j.joca.2016.05.010
M3 - Article
AN - SCOPUS:84971590287
SN - 1063-4584
VL - 24
SP - 1548
EP - 1553
JO - Osteoarthritis and Cartilage
JF - Osteoarthritis and Cartilage
IS - 9
ER -