Rapidly Progressive Tuberculous Arthritis of the Knee Following Excision of a Tubercular Cystic Mass Misdiagnosed as a Baker’s Cyst: A Case Report

Kawng Il Koh, Keun Churl Chun, Lee Sun Ho and Churl Hong Chun

Department of Orthopedic Surgery, MokPo Hankook Hospital, Mokpo, Korea

^*Correspondance to: Churl Hong Chun 

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Abstract:

Extrapulmonary tuberculosis (TB) in the musculoskeletal system is most often reported in the spine and hip joints. The knee, however, is not a common site for extrapulmonary TB to occur. Primary TB arthritis of the knee rarely occurs in the presence of a cystic mass without a history of pulmonary TB. We report the case of a 48-year-old female who underwent total knee arthroplasty (TKA) due to rapidly progressive tuberculous arthritis. This occurred despite receiving anti-tuberculosis (anti- TB) treatment following the excision of a tubercular cystic mass, which had been misdiagnosed as a Baker’s cyst.

Keywords:

TB arthritis, Tubercular cyst, Baker’s cyst, TKA

Cite the Article:

Kawng Il Koh, Keun Churl Chun, Lee Sun Ho, Churl Hong Chun. Rapidly Progressive Tuberculous Arthritis of the Knee Following Excision of a Tubercular Cystic Mass Misdiagnosed as a Baker’s Cyst: A Case Report. Ann Clin Case Rep. 2025; 10: 2758..