title: Erratum to: Clinical Results and Failure Mechanisms of a Nonmodular Constrained Knee Without Stem Extensions.
abstract: [This corrects the article DOI: 10.1007/s11420-012-9277-9.].
authors.affiliation: Hospital for Special Surgery, 535 East 70th Street, New York, NY 10021 USA ; Weill Cornell Medical College, New York, NY 10065 USA.
authors.forename: Denis
authors.initials: D
authors.lastname: Nam
authors.affiliation: Hospital for Special Surgery, 535 East 70th Street, New York, NY 10021 USA.
authors.forename: Ben-Paul N
authors.initials: BN
authors.lastname: Umunna
authors.affiliation: Hospital for Special Surgery, 535 East 70th Street, New York, NY 10021 USA ; Weill Cornell Medical College, New York, NY 10065 USA.
authors.forename: Michael B
authors.initials: MB
authors.lastname: Cross
authors.affiliation: Hospital for Special Surgery, 535 East 70th Street, New York, NY 10021 USA ; Weill Cornell Medical College, New York, NY 10065 USA.
authors.forename: Keith R
authors.initials: KR
authors.lastname: Reinhardt
authors.affiliation: Hospital for Special Surgery, 535 East 70th Street, New York, NY 10021 USA.
authors.forename: Shivi
authors.initials: S
authors.lastname: Duggal
authors.affiliation: Hospital for Special Surgery, 535 East 70th Street, New York, NY 10021 USA ; Weill Cornell Medical College, New York, NY 10065 USA.
authors.forename: Charles N
authors.initials: CN
authors.lastname: Cornell