Study Examines Total Knee Replacement in Patients Under 21 – QNT Press Release

PHILADELPHIA, Nov. 13, 2022 /PRNewswire/ — A new study from researchers at Hospital for Special Surgery (HSS) has evaluated trends in the use of total knee arthroplasty (TKA) in patients under 21 in the United States. The study was reported at the American College of Rheumatology (ACR) Convergence 2022 meeting (abstract number 08780).

According to Cynthia A. KahlenbergMD, MPHan orthopedic surgeon at HSS and a coauthor of the study, TKA is rarely performed in patients under 21 years old but may be done in this population due to conditions such as inflammatory arthritis or juvenile idiopathic arthritis (JIA), malignant or non-malignant tumors, or trauma. However, the number of patients under the age of 21 undergoing TKA in the US is unknown. In one of the largest US studies of an institutional arthroplasty registry, only 19 TKAs were performed in patients under the age of 21 out of approximately 30,000 primary TKAs over 34 years—a majority of which were for JIA.

The researchers retrospectively analyzed the Kids’ Inpatient Database (KID), a national weighted …

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