SYNOVIAL CYST IN THE PROJECTION OF TIBIAL TUNNEL AFTER ACL RECONSTRUCTION (CASE REPORT)

Abstract

ACL tears are the most widespread lesions among isolated trauma of knee ligaments that require early surgical treatment especially in young active patients. There are various ACL reconstruction techniques where femur and tibia tunnels are formed and graft is fixed by cannulated interference screws. One of the possible complications is the formation of a postoperative soft tissue cyst in the projection of tibial tunnel. The nature as well as mechanism of cyst formation is still unclear.A relevant clinical case of cyst formation in a patient five years after ACL grating is described in this publication. MRI findings demonstrated that the origin of the cyst was hole of the tibial interference screw.Conclusion. The authors observed that synovial cyst was formed due to use of cannulated interference screws where synovial fluid was leaking from joint cavity through screw holes. Cystectomy and autografting of tibial bone tunnel allowed to reduce such complication.

Keywords

• anterior cruciate ligament
• synovial cyst
• arthroscopic acl reconstruction