2023 ISAKOS Biennial Congress ePoster
Longitudinal Instrumented Laxity Testing After ACLR Investigating Differences According to Time From Surgery, Surgical Technique, and Patient-Specific Factors
Pieter D'Hooghe, MD PhD, Doha, Qatar QATAR
Rodney Whiteley, PT, PhD, Doha QATAR
Khalid Alkhelaifi, MD, Doha QATAR
vasileios Sideris, MSc, Doha QATAR
Enda King, PhD, MSc, Doha QATAR
Bashir Zikria, MD, Doha QATAR
Bruno Christian Richard Olory, MD, Doha, QATAR QATAR
Emmanouil Papakostas, MD, FEBSM, Doha QATAR
Roula Kotsifaki, PT, PhD, Doha QATAR
Aspetar, Orthopeadic and Sports Medicine Hospital, Doha, QATAR
FDA Status Not Applicable
Summary
Longitudinal instrumented laxity testing after ACLR
ePosters will be available shortly before Congress
Abstract
Background
Instrumented measurement of posterior-to-anterior and rotational knee laxity can be used to assess passive stability after ACL reconstruction.
Objectives
To evaluate the longitudinal changes in knee laxity after ACLR and to identify the influencing factors.
Methods
Mixed model repeated-measures from pre-operative until discharge at 6-week intervals was employed measuring posterior-to-anterior (at 134N, 150N, and 200N) and rotational (at 3Nm and 5Nm) stiffness of both knees to document absolute and within-patient differences. Subjective outcomes were evaluated using IKDC and athletes’ perception of stability after adjusting for age, gender, concomitant surgery, and activity level.
Results
We tested 354 patients, (24 female) of whom 161 were professional and 193 recreational athletes. 94 patients received a bone-tendon-bone graft, 236 patients had hamstring graft, and 24 had quadriceps tendon graft. 56 had a meniscectomy, 131 had meniscus repair, and 167 had no meniscus intervention. 211 of the patients had lateral augmentation.
Conclusions
Preliminary analysis suggests primary effects of time from surgery, surgery type, and age were significant contributors to within-patient differences in laxity.