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Kara McConaghy, Tabitha Derr, Robert M. Molloy, Alison K. Klika, Steven Kurtz, and Nicolas S. Piuzzi

The management of the patella during total knee arthroplasty (TKA) has been a matter of considerable debate in the orthopaedic community. 1 – 4 Surgeons tend to approach the patella with one of three general mindsets: always resurface the patella

Francesco Benazzo, Loris Perticarini, Eugenio Jannelli, Alessandro Ivone, Matteo Ghiara, and Stefano Marco Paolo Rossi

Introduction The variability in the decision about whether to resurface the patella in total knee replacement (TKR) is influenced by different factors including geographic location, training of surgeons, implant design and level of constraint

Daan Vermeulen, Mara Rosa van der Valk, and Laurens Kaas

relevant study comparing conservative treatment with a cylinder cast, brace and posterior splint was available. 3 Anatomy and pathophysiology The patellofemoral joint consists of the patella and the femoral trochlea. This joint obtains its

Stefano Zaffagnini, Alberto Grassi, Gianluca Zocco, Michele Attilo Rosa, Cecilia Signorelli, and Giulio Maria Marcheggiani Muccioli

Introduction Trochlear dysplasia is defined as a geometrical abnormality of the shape and depth of the trochlear groove mainly at its proximal part, where the patella engages into the trochlea. This represents the main feature of the wider and

Jimmy Ng, Pau Balcells-Nolla, Peter J. James, and Benjamin V. Bloch

, difficulty walking and/or pain. Its incidence is reported to be between 0.1% and 2.5% in all TKA but revision TKA is thought to carry a higher risk. 1 – 4 Extensor mechanism failure can present as quadriceps tendon rupture, patella fracture ( Fig. 1

Mark Anthony Roussot and Fares Sami Haddad

as the Freeman-Swanson Total Condylar Prosthesis (1970) and the Kodama-Yamamoto prosthesis (1970), paved the way for future designs, yet the original versions made no allowance for the patella. 14 , 15 Patellectomy was frequently performed either

Emmanuel Thienpont

bluntly and continued to the joint line to establish the medial gutter. This is repeated on the lateral side, with the pseudocapsule bluntly dissected, fibrous tissue removed from around the patella and any fibrous adhesions deep to the patella released

Daniel J. McCormack, Darren Puttock, and Steven P. Godsiff

Introduction Many patients present to orthopaedic surgeons with a painful knee attributed to osteoarthritis of the medial compartment, where the lateral compartment and patella-femoral joint are relatively spared. Traditionally, the treatment

Cheuk Yin Li, Kenneth Jordan Ng Cheong Chung, Omar M. E. Ali, Nicholas D. H. Chung, and Cheuk Heng Li

, magnitude, and amplitude. Lower distal buckling angles are also correlated with better Knee Society Scores. Buckling happens when the tendon ruffles back on itself when extended or moved passively, and many factors can contribute to this including patella

David Barrett and Angela Brivio

result of a combination of anatomical bony structures and the surrounding soft tissue and muscle structures that encircle the mobile patella. As patellofemoral function is a dynamic three-dimensional moving concern, it has only been possible recently to