Enhanced strength in cemented stem fixation using adhesive acrylic cement as a metal coating material.
One cause of aseptic loosening of cemented total hip arthroplasty is mechanical weakness at the interface between the metal stem and the cured bone cement. Adhesive acrylic bone cement containing 4-methacryloyloxyethyl trimellitate anhydride (4-META) was applied as a metal coating material to increase the strength of the cemented fixation. The 4-META cement has 2-3 times greater tensile bond strength to metals than does commercial acrylic bone cement. The shear strength of the coated metals fixed with bone cement was approximately 4 times greater in SUS-304 and 3 times greater in titanium (Ti) alloy than those of uncoated metals, and this strength did not decrease after 1 week's immersion in saline. The coating process using the 4-META cement can be performed at normal room temperature, so that metal stems for bone cement fixation could be coated during the course of an operation resulting in potentially improved results of total hip arthroplasty.
Morita
S
S
Department of Orthopaedic Surgery, Faculty of Medicine, Tokyo Medical and Dental University, Japan.
Yamamoto
H
H
Furuya
K
K
Ishihara
K
K
Nakabayashi
N
N
D001672:Biocompatible Materials; D001843:Bone Cements; D006622:Hip Prosthesis; D006801:Humans; D008422:Materials Testing; D008689:Methacrylates
D001672:Biocompatible Materials; D001843:Bone Cements; D008689:Methacrylates; C034139:4-methacryloxyethyltrimellitic acid anhydride