This article is more than 5 years old. Information may no longer be current.
Researchers recommend investigation of malrotation in dissatisfied TKA patients
In this study, 61% of patients were dissatisfied with their secondary patellar resurfacing after primary total knee arthroplasty.
“We recommend that investigation for malrotation should be considered in patients with postoperative pain causing significant dissatisfaction amongst patients following [total knee arthroplasty] TKA,” the researchers wrote in the study. “This is especially true if the patella has not been primarily resurfaced and secondary resurfacing is being considered. This may help to go some way towards predicting the outcome.”
The researchers stated that while 39% of patients were satisfied with secondary patellar resurfacing, 61% were unsatisfied although there were no complications after the secondary procedure. The satisfied group was recorded with a mean femoral internal rotation of 0.92°, while the dissatisfied group had 2.88° of internal rotation, according to the abstract.
Eight of 14 TKAs in the dissatisfied group showed ≥ 3° of femoral internal rotation, while one of 9 TKAs in the satisfied group had that degree of internal rotation.