Rothia mucilaginosa: a case of septic arthritis in a native knee and review of the literature.

Rothia mucilaginosa is a Gram-positive aerobic coccus usually found in the oral and respiratory tract. Septic arthritis is an uncommon condition, but is an orthopaedic emergency. A rare case of knee septic arthritis due to R. mucilaginosa is presented. Patient management and outcomes are discussed, and learning points from this case are outlined to help manage any further cases that may arise.