Although Baker's cysts may mimic deep vein thrombosis, it is unusual f
or the two conditions to coexist in the same patient. The authors repo
rt a case of a fifty-eight-year-old man who had repeated episodes of d
eep venous thrombosis in spite of anticoagulation and arthroscopic joi
nt debridement. Ultimately, total knee arthroplasty corrected the prob
lem so that the patient has had no further recurrence of venous thromb
osis upon follow-up. A brief discussion of these two conditions follow
s the case report.