3D printed liner for treatment of periprosthetic joint infections.

Autor: Kim TWB; Cooper Bone and Joint Institute, Cooper University Hospital, 3 Cooper Plaza, Suite 400, Camden, NJ 08103, United States., Lopez OJ; Department of Biomedical Sciences, Cooper Medical School of Rowan University, Camden, NJ 08103, United States., Sharkey JP; Department of Mechanical Engineering, Rowan University, 201 Mullica Hill Road, Glassboro, NJ 08028, United States., Marden KR; Cooper Bone and Joint Institute, Cooper University Hospital, 3 Cooper Plaza, Suite 400, Camden, NJ 08103, United States., Murshed MR; Department of Mechanical Engineering, Rowan University, 201 Mullica Hill Road, Glassboro, NJ 08028, United States., Ranganathan SI; Department of Mechanical Engineering, Rowan University, 201 Mullica Hill Road, Glassboro, NJ 08028, United States; Department of Biomedical Engineering, Rowan University, 201 Mullica Hill Road, Glassboro, NJ 08028, United States. Electronic address: ranganathan@rowan.edu.
Jazyk: angličtina
Zdroj: Medical hypotheses [Med Hypotheses] 2017 May; Vol. 102, pp. 65-68. Date of Electronic Publication: 2017 Mar 09.
DOI: 10.1016/j.mehy.2017.03.014
Abstrakt: In the United States, long standing deep infections of joint arthroplasty, such as total knee and total hip replacements, are treated with two-stage exchange. This requires the removal of the prior implant, placement of an antibiotic eluting spacer block made of polymethylmethacrylate (PMMA), followed by re-implantation of a new implant after treatment with intravenous antibiotics for six to eight weeks. Unfortunately, the use of PMMA as a spacer material has limitations in terms of mechanical and drug-eluting properties. PMMA is brittle and elutes most of the antibiotics within the first few days. Furthermore, the polymerization reaction for PMMA is highly exothermic, thereby limiting the use to heat-stable antibiotics. We hypothesize that the use of a 3D printed polymeric liner made of polylactic acid (PLA) would overcome the limitations of PMMA because it is a stronger and a less brittle material than PMMA. Furthermore, the liner can also act as a controlled drug delivery vehicle by using built in reservoirs and a network of micro-channels as well as by incorporating antibiotics directly into the polymer during manufacturing stage. Finally, the liner can be 3D printed according to the anatomy of the patient and thereby has the potential to transform the manner in which periprosthetic joint infections are currently treated.
(Copyright © 2017 Elsevier Ltd. All rights reserved.)
Databáze: MEDLINE
Externí odkaz: