title: Doctor, what does my knee arthroplasty weigh?
abstract: The aim of this study was to compare the weight of the total knee arthroplasty (TKA) implants and the weight of the natural knee. A prospective study was conducted with two different brands of cemented primary TKA. During the procedure, we collected the removed bone, soft tissues and the post-implantation cement and weighed them all separately at the end. In both groups, the implants plus cement were significantly heavier than the removed bone and soft tissues. The average weight gained was 266.7 ± 35.1 g for group 1 and 279.1 ± 48.7 g for group 2. This significant local weight gained after TKA is a new parameter that should be taken into account for further studies and when creating new implants.
authors.affiliation: Croix-Saint-Simon teaching Hospital, Department of Orthopaedic Surgery, 125 rue d'Avron, 75020, Paris, France.
authors.forename: Emmanuel
authors.initials: E
authors.lastname: Gibon
authors.affiliation: Croix-Saint-Simon teaching Hospital, Department of Orthopaedic Surgery, 125 rue d'Avron, 75020, Paris, France.
authors.forename: Antoine
authors.initials: A
authors.lastname: Mouton
authors.affiliation: Croix-Saint-Simon teaching Hospital, Department of Orthopaedic Surgery, 125 rue d'Avron, 75020, Paris, France.
authors.forename: Dorick
authors.initials: D
authors.lastname: Passeron
authors.affiliation: Croix-Saint-Simon teaching Hospital, Department of Orthopaedic Surgery, 125 rue d'Avron, 75020, Paris, France.
authors.forename: Vincent
authors.initials: V
authors.lastname: Le Strat
authors.affiliation: Croix-Saint-Simon teaching Hospital, Department of Orthopaedic Surgery, 125 rue d'Avron, 75020, Paris, France.
authors.forename: Wilfrid
authors.initials: W
authors.lastname: Graff
authors.affiliation: Croix-Saint-Simon teaching Hospital, Department of Orthopaedic Surgery, 125 rue d'Avron, 75020, Paris, France.
authors.forename: Simon
authors.initials: S
authors.lastname: Marmor
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D019645:Arthroplasty, Replacement, Knee; D001837:Body Weights and Measures; D001843:Bone Cements; D005260:Female; D006801:Humans; D007717:Knee / Q000601:surgery; D007719:Knee Joint / Q000601:surgery; D007720:Knee Prosthesis; D008297:Male; D020370:Osteoarthritis, Knee / Q000601:surgery*; D011446:Prospective Studies; D011474:Prosthesis Design
chemical_list: D001843:Bone Cements
keywords: TKA components; bone; cement; soft tissues; weight