A cerclage wire is a wire which is wound during surgery around several broken bony fragments to hold them together until they heal.
When a bone is shattered - for example the patella - the pieces are often impossible to plate and cerclage wires may offer a chance for the pieces to unite again.
Treatment of displaced transverse fractures of the patella: modified tension band wiring technique with or without augmented circumferential cerclage wire fixation. Tien-Yu Yang,1,2 Tsan-Wen Huang,1,2 Po-Yao Chuang,1,2 and Kuo-Chin Huangcorresponding author1,2,3 BMC Musculoskelet Disord. 2018; 19: 167.