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Akkad DT, Phull SS, Towler MR. Evaluating the physico-chemical properties of water-based and 2% lidocaine hydrochloride-based aluminum-free glass polyalkenoate cements for distal radius fixation. J Biomater Appl 2024; 39:343-354. [PMID: 39079098 DOI: 10.1177/08853282241268669] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/28/2024]
Abstract
Lidocaine hydrochloride is used as an anesthetic for clinical applications. This study considers the effects of the substitution of 2% lidocaine hydrochloride for deionized (DI) water on the rheological, mechanical, ion release, pH and injectable properties of two formulations of aluminum-free glass polyalkenoate cements (GPCs) using two distinct poly(acrylic) acids (PAA), E9 and E11, which have different molecular weights (Mw). The substitution of 2% lidocaine hydrochloride demonstrated increased injectability, but did not affect mechanical properties. The mechanical properties increased with time, as expected, and, in general, E9-based GPCs displayed significantly higher strengths over E11-based GPCs. With respect to ion release, which includes calcium (Ca), strontium (Sr), zinc (Zn) and silicon (Si); all ions displayed a steady and consistent increased release over time. Ca and Sr showed similar ion release patterns, whereby the GPC made with E11 PAA and lidocaine hydrochloride released significantly more ions than all other compositions likely due to similar chemical kinetics. However, Zn is also divalent in nature, but displayed only one significant difference across the GPC series at all time points, which was attributed to its higher electronegativity allowing for increased participation in the setting reaction. Finally, an analysis of the pH confirmed an increase in pH with time, suggesting that H+ ions were attacking the glass structure to allow for ion release. After 1 and 7 days, water-based GPCs environments achieved a higher pH than lidocaine hydrochloride-based GPCs, indicating that the lidocaine hydrochloride may be releasing additional protons upon bond formation with PAA.
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Affiliation(s)
- Danny T Akkad
- Department of Mechanical Engineering, Toronto Metropolitan University, Toronto, ON, Canada
- Li Ka Shing Knowledge Institute, St. Michael's Hospital, Toronto, ON, Canada
| | - Sunjeev S Phull
- Department of Chemical and Biochemical Engineering, Missouri University of Science and Technology, Rolla, MO, USA
| | - Mark R Towler
- Department of Chemical and Biochemical Engineering, Missouri University of Science and Technology, Rolla, MO, USA
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Hasandoost L, Marx D, Zalzal P, Safir O, Hurtig M, Mehrvar C, Waldman SD, Papini M, Towler MR. Comparative Evaluation of Two Glass Polyalkenoate Cements: An In Vivo Pilot Study Using a Sheep Model. J Funct Biomater 2021; 12:jfb12030044. [PMID: 34449631 PMCID: PMC8395762 DOI: 10.3390/jfb12030044] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Revised: 07/24/2021] [Accepted: 07/28/2021] [Indexed: 11/16/2022] Open
Abstract
Poly(methyl methacrylate) (PMMA) is used to manage bone loss in revision total knee arthroplasty (rTKA). However, the application of PMMA has been associated with complications such as volumetric shrinkage, necrosis, wear debris, and loosening. Glass polyalkenoate cements (GPCs) have potential bone cementation applications. Unlike PMMA, GPC does not undergo volumetric shrinkage, adheres chemically to bone, and does not undergo an exothermic setting reaction. In this study, two different compositions of GPCs (GPCA and GPCB), based on the patented glass system SiO2-CaO-SrO-P2O5-Ta2O5, were investigated. Working and setting times, pH, ion release, compressive strength, and cytotoxicity of each composition were assessed, and based on the results of these tests, three sets of samples from GPCA were implanted into the distal femur and proximal tibia of three sheep (alongside PMMA as control). Clinical CT scans and micro-CT images obtained at 0, 6, and 12 weeks revealed the varied radiological responses of sheep bone to GPCA. One GPCA sample (implanted in the sheep for 12 weeks) was characterized with no bone resorption. Furthermore, a continuous bone-cement interface was observed in the CT images of this sample. The other implanted GPCA showed a thin radiolucent border at six weeks, indicating some bone resorption occurred. The third sample showed extensive bone resorption at both six and 12 weeks. Possible speculative factors that might be involved in the varied response can be: excessive Zn2+ ion release, low pH, mixing variability, and difficulty in inserting the samples into different parts of the sheep bone.
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Affiliation(s)
- Leyla Hasandoost
- Faculty of Engineering and Architectural Science, Biomedical Engineering Program, Ryerson University, Toronto, ON M5B 2K3, Canada; (L.H.); (D.M.); (S.D.W.); (M.P.)
- Li Ka Shing Knowledge Institute, St. Michael’s Hospital, Toronto, ON M5B 1W8, Canada
| | - Daniella Marx
- Faculty of Engineering and Architectural Science, Biomedical Engineering Program, Ryerson University, Toronto, ON M5B 2K3, Canada; (L.H.); (D.M.); (S.D.W.); (M.P.)
- Li Ka Shing Knowledge Institute, St. Michael’s Hospital, Toronto, ON M5B 1W8, Canada
| | - Paul Zalzal
- Faculty of Medicine, Department of Surgery, McMaster University, Hamilton, ON L8S 4L8, Canada;
- Oakville Trafalgar Memorial Hospital, Oakville, ON L6J 3L7, Canada
| | - Oleg Safir
- Division of Orthopedic Surgery, Mount Sinai Hospital, 600 University Ave, Toronto, ON M5G 1X5, Canada;
| | - Mark Hurtig
- Ontario Veterinary College, University of Guelph, 50 Stone Rd E, Guelph, ON N1G 2W1, Canada;
| | - Cina Mehrvar
- Department of Mechanical & Industrial Engineering, Ryerson University, Toronto, ON M5B 2K3, Canada;
| | - Stephen D. Waldman
- Faculty of Engineering and Architectural Science, Biomedical Engineering Program, Ryerson University, Toronto, ON M5B 2K3, Canada; (L.H.); (D.M.); (S.D.W.); (M.P.)
- Li Ka Shing Knowledge Institute, St. Michael’s Hospital, Toronto, ON M5B 1W8, Canada
- Department of Chemical Engineering, Ryerson University, Toronto, ON M5B 2K3, Canada
| | - Marcello Papini
- Faculty of Engineering and Architectural Science, Biomedical Engineering Program, Ryerson University, Toronto, ON M5B 2K3, Canada; (L.H.); (D.M.); (S.D.W.); (M.P.)
- Department of Mechanical & Industrial Engineering, Ryerson University, Toronto, ON M5B 2K3, Canada;
| | - Mark R. Towler
- Faculty of Engineering and Architectural Science, Biomedical Engineering Program, Ryerson University, Toronto, ON M5B 2K3, Canada; (L.H.); (D.M.); (S.D.W.); (M.P.)
- Li Ka Shing Knowledge Institute, St. Michael’s Hospital, Toronto, ON M5B 1W8, Canada
- Department of Mechanical & Industrial Engineering, Ryerson University, Toronto, ON M5B 2K3, Canada;
- Correspondence:
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