Abstract
To identify pre-operative patient characteristics associated with early recovery of knee range of motion and ambulation without an assistive device after TKA.
95 subjects completed testing 2-4 weeks prior to surgery and 1 month after surgery. Binary logistic regression models were performed using patient's pre-operative measures to predict knee functional knee range of motion (ROM) and early independent mobility 1 month after TKA. Functional ROM was defined as active knee flexion ≥100° and Ext ≤5°. Independent mobility was defined as no need for an assistive device during the Six Minute Walk (6 MW) test. Nagelkerke's R
2
, and model and step significance were assessed.
One month after surgery, 56 (58.9%) subjects did not have functional ROM. 75 (78.9%) subjects did not use an AD during the 6 MW. There were no significant predictors of early ROM recovery (R
2
=0.142, p-value = 0.06) or independent mobility (R
2
N
=0.138, p-value = 0.116).
Pre-operative measures were not predictive of early recovery rates one month after TKA, making pre-operative ROM and mobility risk stratification difficult. Future research should evaluate other factors, such as surgical pain and swelling, which may be better predictors of early outcomes after TKA.