Intratendinous rupture of flexor digitorum profundus caused by non-specific synovitis

Closed ruptures of flexor tendons in the hands of patients without rheumatoid arthritis are rare. We reporta case of closed rupture of the flexor digitorum profundus of the middle finger in zone II, secondary to acute florid synovitis forming a tumour-like mass. No similar case has been reported to our knowledge. The management of this unexpected finding at surgical exploration is discussed.