title: Fracture of the central polyethylene tibial spine in posterior stabilized total knee arthroplasty.
abstract: Between 1993 and 1998, 332 I-BII (Insall Burstein II) prostheses were implanted in our department. We studied 5 cases of tibial polyethylene spine fractures. The fractures occurred 3 to 5 years following the surgery. All cases with fractures had mild medial laxity that was noted on follow-up of 2 to 3 years following arthroplasty. One also developed mild hyperextension. All the patients had a revision surgery. In 2 cases, the polyethylene was changed to a thicker one, together with medial reinforcement. Three cases were revised to a rotating hinge prosthesis.
authors.affiliation: Department of Orthopaedics, Tel Aviv University, Holon, Israel.
authors.forename: David
authors.initials: D
authors.lastname: Hendel
authors.forename: Avraham
authors.initials: A
authors.lastname: Garti
authors.forename: Moshe
authors.initials: M
authors.lastname: Weisbort
mesh_terms: D000368:Aged; D019645:Arthroplasty, Replacement, Knee; D005260:Female; D006801:Humans; D007720:Knee Prosthesis; D008297:Male; D008875:Middle Aged; D011095:Polyethylenes; D011475:Prosthesis Failure; D013977:Tibia
chemical_list: D011095:Polyethylenes