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Algorithmic, pie-crusting release technique significantly reduced use of constrained inserts in TKA
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Recently published results showed a significant reduction in the use of constrained inserts with no detrimental effects in clinical results, joint function or stability among patients who underwent an algorithmic, pie-crusting release technique during total knee arthroplasty.
Researchers balanced 228 patients who underwent total knee arthroplasty following the medial soft-tissue sleeve release technique (control group) and 188 patients using the algorithmic, pie-crusting technique (study group). The use of a constrained insert and Knee Society Score at 6-weeks, 4-months and 1-year postoperatively were considered outcome variables. Researchers used a multivariate model that controlled for age, sex, BMI and severity of deformity to analyze the effect of the release technique on use of constrained inserts and clinical outcomes.
Results showed the study group had a significantly lower use of constrained inserts vs. the control group. Researchers noted a significant association between the severity of varus deformity and constrained insert use. Patients with moderate deformity were 4.4-times more likely to have a constrained insert vs. patients with mild deformity, according to results, with the rate increasing to 4.8-times and 13.9-times more likely for patients with marked or severe deformity, respectively. Although researchers found an increase in the functional Knee Society Score and knee-specific Knee Society Score at all postoperative time intervals vs. preoperative values, patients in the study group and the control group had similar changes. – by Casey Tingle
Disclosures: Mehdikhani reports no relevant financial disclosures. Please see the full study for a list of all other authors’ relevant financial disclosures.
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