title: Bi-unicompartmental and combined uni plus patellofemoral replacement: indications and surgical technique.
abstract: The anatomy and orientation of the condyles and the trochlea are not standard, but related to morphotype, gender and race. Consequently, the extreme variability in their dimension, and in the distance and angle between the axis of the condyles and of the trochlea, often necessitates a "custom-made" replacement. This may be achieved through the use of small implants. Bicompartmental osteoarthritis with intact ligaments should be addressed with bi-unicompartmental (bi-UKR) or UKR plus patellofemoral replacement (PFR). These options allow selective replacement of the worn compartments and a customised fit of the small implants to the native knee anatomy. Clinical consequences are restoration of the native knee kinematics and overall better function.
authors.affiliation: Department of Joint Replacement, IRCCS Galeazzi Orthopaedic Institute, Milan, Italy.
authors.forename: Sergio
authors.initials: S
authors.lastname: Romagnoli
authors.affiliation: Department of Joint Replacement, IRCCS Galeazzi Orthopaedic Institute, Milan, Italy.
authors.forename: Matteo
authors.initials: M
authors.lastname: Marullo
authors.affiliation: Department of Joint Replacement, IRCCS Galeazzi Orthopaedic Institute, Milan, Italy.
authors.forename: Michele
authors.initials: M
authors.lastname: Massaro
authors.affiliation: Department of Joint Replacement, IRCCS Galeazzi Orthopaedic Institute, Milan, Italy.
authors.forename: Enis
authors.initials: E
authors.lastname: Rustemi
authors.affiliation: Department of Joint Replacement, IRCCS Galeazzi Orthopaedic Institute, Milan, Italy.
authors.forename: Federico
authors.initials: F
authors.lastname: D'Amario
authors.affiliation: Department of Joint Replacement, IRCCS Galeazzi Orthopaedic Institute, Milan, Italy.
authors.forename: Michele
authors.initials: M
authors.lastname: Corbella
keywords: bicompartmental; knee replacement; patellofemoral; replacement; unicompartmental