Knee osteoarthritis is a common joint condition for which clinical guidelines consistently support topical therapy applied directly to the affected knee as part of first-line management. Multiple major guideline bodies have evaluated and issued recommendations for this approach.
Topical NSAIDs were uniformly strongly recommended for knee OA by all guidelines and were strongly and conditionally recommended for hand OA by EULAR and ACR/AF, respectively, with the strength of recommendation influenced by practicality of using topical agents on finger joints.
In contrast, topical capsaicin was conditionally or weakly recommended for knee OA by ACR/AF and VA/DOD, but conditionally recommended against by OARSI.
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