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Abstract
Pes planovalgus affects knee biomechanics but there are no studies describing its impact on total knee arthroplasty (TKA). We aim to characterize the demographics, medical, and surgical complications of patients with pes planovalgus undergoing TKA. A Medicare database was queried using ICD-9 codes to identify 5,750 patients with and 23,000 patients without pes planovalgus who underwent TKA from 2005 to 2014. Standard descriptive statistics were used to compare medical and surgical complications at 90 days and 2 years, with alpha < 0.003 after a Bonferroni Correction. Patients with pes planovalgus had an elevated incidence of hypertension (80%, p < 0.001), pulmonary disease (31%, p < 0.001), hypothyroidism (28%, p < 0.001), diabetes (30%, p < 0.001), vascular disease (20%, p < 0.001), obesity (26%, p < 0.001), and depression (23%, p < 0.001). They also had increased odds of deep vein thrombosis (DVT) (odds ratio [OR] 1.3, p < 0.001), stiffness (OR 1.3, p < 0.003) and revision (OR 1.59, p < 0.003) at 90 days. At 2 years, odds of stiffness had increased (OR 1.34, p < 0.001) with similar rates of revision and medical complications. Pes planovaglus is associated with increased medical comorbidities and this patient population may be at an increased risk for postoperative stiffness, early revisions, and DVT after TKA. Arthroplasty surgeons should be conscious of these risks when considering TKA in a patient with pes planovalgus and counsel them appropriately. (Journal of Surgical Orthopaedic Advances 32(3):202-206, 2023).
View details for PubMedID 38252610