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Baba S, Motomura G, Ikemura S, Yamaguchi R, Hamai S, Fujii M, Kawano K, Nakashima Y. Risk factors for radiological changes after bipolar hemiarthroplasty for osteonecrosis of the femoral head. Mod Rheumatol 2020; 31:725-732. [PMID: 32475189 DOI: 10.1080/14397595.2020.1775959] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
OBJECTIVES This study aimed to report the mid-term radiological outcomes of patients with bipolar hemiarthroplasty (BHA) for stage 3 osteonecrosis of the femoral head (ONFH), and to identify the risk factors for postoperative radiological changes. METHODS We retrospectively investigated 62 patients (38 men and 24 women; mean age, 50.1 years) aged <70 years who underwent primary BHA for Association Research Circulation Osseous stage 3 ONFH between 1998 and 2010. The mean follow-up period after BHA was 12.8 years. The following changes were assessed on follow-up radiographs: outer head migration, polyethylene wear, and femoral osteolysis. The association between demographic data and the development of postoperative radiological changes was evaluated. RESULTS Radiological changes were found in 20 hips (32.3%) at a mean of 8.1 years after BHA; of these, three hips (4.8%) underwent total hip arthroplasty conversion at a mean of 10.9 years after BHA. Both univariate and multivariate analysis revealed that younger age and female sex were independent risk factors for the development of postoperative radiological changes. CONCLUSION The current results suggest that the indication of BHA should be carefully determined in young or female patients with ONFH, even when the disease is in the early stage.
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Affiliation(s)
- Shoji Baba
- Department of Orthopaedic Surgery, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Goro Motomura
- Department of Orthopaedic Surgery, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Satoshi Ikemura
- Department of Orthopaedic Surgery, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Ryosuke Yamaguchi
- Department of Orthopaedic Surgery, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Satoshi Hamai
- Department of Orthopaedic Surgery, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Masanori Fujii
- Department of Orthopaedic Surgery, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Koichiro Kawano
- Department of Orthopaedic Surgery, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Yasuharu Nakashima
- Department of Orthopaedic Surgery, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
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Ajdari N, Tempelaere C, Masouleh MI, Abel R, Delfosse D, Emery R, Dini D, Hansen U. Hemiarthroplasties: the choice of prosthetic material causes different levels of damage in the articular cartilage. J Shoulder Elbow Surg 2020; 29:1019-1029. [PMID: 31948834 DOI: 10.1016/j.jse.2019.09.041] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/17/2019] [Revised: 09/24/2019] [Accepted: 09/30/2019] [Indexed: 02/01/2023]
Abstract
BACKGROUND Hemiarthroplasty has clear advantages over alternative procedures and is used in 20% of all shoulder joint replacements. Because of cartilage wear, the clinical outcome of hemiarthroplasty is unreliable and controversial. This paper suggests that the optimal choice of prosthetic material may reduce cartilage degeneration and improve the reliability of the procedure. The specific objectives were to assess 3 materials and assess how the severity of arthritis might affect the choice of prosthetic material. METHODS A CoCr alloy, an AL2O3 ceramic, and a polycarbonate urethane polymer (PCU) were mechanically tested against 5 levels of human osteoarthritic cartilage (from intact to severely arthritic, n = 45). A high friction coefficient, a decrease in Young's modulus, an increase in permeability, a decrease in relaxation time, an increase in surface roughness, and a disrupted appearance of the cartilage after testing were used as measures of cartilage damage. The biomaterial that caused minimal cartilage damage was defined as superior. RESULTS The CoCr caused the most damage. This was followed by the AL2O3 ceramic, whereas the PCU caused the least amount of damage. Although the degree of arthritis had an effect on the results, it did not change the trend that CoCr performed worst and PCU the best. DISCUSSION AND CONCLUSION This study indicates that ceramic implants may be a better choice than metals, and the articulating surface should be as smooth as possible. Although our results indicate that the degree of arthritis should not affect the choice of prosthetic material, this suggestion needs to be further investigated.
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Affiliation(s)
- Niloofar Ajdari
- Department of Mechanical Engineering, Imperial College London, South Kensington Campus, London, UK
| | - Christine Tempelaere
- Department of Mechanical Engineering, Imperial College London, South Kensington Campus, London, UK; Department of Orthopaedic Surgery, Bicetre Hospital, Le Kremlin-Bicêtre, France
| | - Maryam Imani Masouleh
- Department of Mechanical Engineering, Imperial College London, South Kensington Campus, London, UK
| | - Richard Abel
- Department of Surgery and Cancer, Charing Cross Campus, London, UK
| | | | - Roger Emery
- Department of Surgery and Cancer, St. Mary's Hospital, London, UK
| | - Daniele Dini
- Department of Mechanical Engineering, Imperial College London, South Kensington Campus, London, UK
| | - Ulrich Hansen
- Department of Mechanical Engineering, Imperial College London, South Kensington Campus, London, UK.
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Wimmer MA, Pacione C, Yuh C, Chan YM, Kunze J, Laurent MP, Chubinskaya S. Articulation of an alumina-zirconia composite ceramic against living cartilage – An in vitro wear test. J Mech Behav Biomed Mater 2020; 103:103531. [DOI: 10.1016/j.jmbbm.2019.103531] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2019] [Revised: 11/04/2019] [Accepted: 11/11/2019] [Indexed: 11/24/2022]
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Matsui S, Majima T, Mominoki K, Hirayama H, Oshima Y, Takahashi K, Takai S. Effects of Endoprosthesis Head Material on Acetabular Cartilage Metabolism: An Animal Study Using Crossbred Pigs. J NIPPON MED SCH 2018; 85:309-314. [PMID: 30568056 DOI: 10.1272/jnms.jnms.2018_85-50] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
BACKGROUND Hip endoprosthesis is one option for the treatment of displaced femoral neck fractures and avascular necrosis of the femoral head. Few reports are available describing acetabular cartilage metabolism after endoprosthesis surgery of the hip. The purpose of this study was to compare the biological effects on cartilage between cobalt-chrome (Co-Cr) and alumina ceramic heads wherein the cartilage articulates directly. METHODS We used the acetabular cartilage from six hips of three immature crossbred pigs to examine the effects on cytokines, the amount of hyaluronic acid (HA), and cartilage mRNA expression of ceramic head and Co-Cr head endoprosthesis. Mechanical loading of materials of Co-Cr and ceramic heads was performed on the acetabular cartilage in culture media as an organ culture model. Thereafter, protein levels of cytokines (MMP-1, 3, TNF-alpha (α), Interleukin (IL)-1 alpha (α), and IL-1 beta (β)) and the amount of HA were measured from the culture media. Cartilage RNA extraction was performed, and quantitative reverse transcriptase-polymerase chain reaction was performed with primer sets for type I, II, and III collagens; aggrecan; MMP-1, 3, 13; TNF-α; and IL-1 α, IL-1 β. RESULTS Protein level of IL-1 β and amount of HA in the Co-Cr group were significantly higher than those of the Ceramic group. Type II collagen mRNA expression in the Ceramic group was significantly higher than in the Co-Cr group. IL-1 β mRNA expression was significantly higher in the Co-Cr group than in the Ceramic group. CONCLUSIONS The present study showed that ceramic bipolar produces smaller adverse effects on cartilage cells compared to Co-Cr bipolar. These results could have significant implications for implant usage not only in hip joints, but also in other joints, including the shoulder, talus and radial head.
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Affiliation(s)
- Shuhei Matsui
- Department of Orthopedic Surgery, Nippon Medical School
| | | | | | | | | | | | - Shinro Takai
- Department of Orthopedic Surgery, Nippon Medical School
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Dantas TA, Roedel S, Mesquita-Guimarães J, Pinto P, Souza JCM, Fredel MC, Silva FS, Henriques B. Sliding behavior of zirconia porous implant surfaces against bone. J Biomed Mater Res B Appl Biomater 2018; 107:1113-1121. [PMID: 30230711 DOI: 10.1002/jbm.b.34204] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2018] [Revised: 06/25/2018] [Accepted: 07/01/2018] [Indexed: 01/27/2023]
Abstract
Different zirconia porous layers were produced on zirconia dense zirconia substrates by slip casting using powder with different mean sizes: 40 μm (Z40), 70 μm (Z70), and 100 μm (Z100). The dynamic and static coefficients of friction against bovine femoral bone, mimicking the implantation process, were conducted using a ball-on-flat reciprocating sliding tribometer under 3 N of normal load. Additionally, the porous layers were assessed with regard to their low temperature degradation (aging). Results revealed that the porous layers were able to keep their integrity during the sliding testes against bone, with no zirconia particles being transferred to the bone. Results did not show significant differences (p > 0.05) in kinetic and static COF values for Z40, Z70, Z100, and GRAD specimens, ranging from 0.53 to 0.77 and 0.65 to 0.90, respectively. The aging tests revealed that all surfaces were prone to low temperature degradation (~49% of monoclinic content after 18 h). In conclusion, the cohesive integrity of the layers and relatively high COF observed reveled that zirconia porous layers may be considered for replacing the current implant surfaces, and are expected to improve their primary stability. © 2018 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater 107B: 1113-1121, 2019.
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Affiliation(s)
- T A Dantas
- Center for MicroElectroMechanical Systems (CMEMS), University of Minho (UMinho), 4800-058, Guimarães, Portugal.,MIT Portugal Program, School of Engineering, University of Minho, Guimarães, Portugal
| | - S Roedel
- Ceramic and Composite Materials Research Group (CERMAT), Federal University of Santa Catarina (UFSC), 88040-900, Florianópolis, Brazil
| | - J Mesquita-Guimarães
- Center for MicroElectroMechanical Systems (CMEMS), University of Minho (UMinho), 4800-058, Guimarães, Portugal
| | - P Pinto
- Center for MicroElectroMechanical Systems (CMEMS), University of Minho (UMinho), 4800-058, Guimarães, Portugal
| | - J C M Souza
- Center for MicroElectroMechanical Systems (CMEMS), University of Minho (UMinho), 4800-058, Guimarães, Portugal.,School of Dentistry (DODT), Post-Graduation Program in Dentistry (PPGO), Federal University of Santa Catarina, Campus Trindade, 88040-900, Florianópolis, /SC, Brazil
| | - M C Fredel
- Ceramic and Composite Materials Research Group (CERMAT), Federal University of Santa Catarina (UFSC), 88040-900, Florianópolis, Brazil
| | - F S Silva
- Center for MicroElectroMechanical Systems (CMEMS), University of Minho (UMinho), 4800-058, Guimarães, Portugal
| | - B Henriques
- Center for MicroElectroMechanical Systems (CMEMS), University of Minho (UMinho), 4800-058, Guimarães, Portugal.,Ceramic and Composite Materials Research Group (CERMAT), Federal University of Santa Catarina (UFSC), 88040-900, Florianópolis, Brazil.,School of Dentistry (DODT), Post-Graduation Program in Dentistry (PPGO), Federal University of Santa Catarina, Campus Trindade, 88040-900, Florianópolis, /SC, Brazil
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Yoshioka T, Okimoto N, Fuse Y, Kawasaki M, Mori T, Sakai A, Majima T. In-vivo postoperative motion analysis of metal and ceramic bipolar hip hemiarthroplasty. J Orthop Sci 2018; 23:371-376. [PMID: 29229239 DOI: 10.1016/j.jos.2017.11.015] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/18/2017] [Revised: 11/21/2017] [Accepted: 11/26/2017] [Indexed: 02/09/2023]
Abstract
BACKGROUND We hypothesized that ceramic bipolar shows less impingement between stem neck and outer head compared to metal bipolar, because of its low coefficient of friction with the acetabulum cartilage. In this paper, a three dimensional (3D) postoperative motion analysis has been used to assess the different motion characteristics of metal and ceramic bipolar hip hemiarthroplasty systems. METHODS This study was conducted on 40 patients divided in two matched cohorts: 20 patients with metal bipolar and 20 patients with the ceramic bipolar. We obtained motion pictures from standing position to maximum abduction in flexion by fluoroscopy then analyzed by 2D-3D image matching method. The motion range of the "Outer head angle", "Stem neck angle" and the "Stem neck and outer head angle" was compared between the metal bipolar group and the ceramic bipolar group. RESULTS The metal bipolar group's inner head's range of movement was greater than the ceramic bipolar group. Impingement between stem neck and outer head occurred in 30% of metal group patients. There were no impingement cases for the ceramic bipolar group. CONCLUSIONS The ceramic bipolar shows less impingement between stem neck and outer head compared to the metal bipolar. Ceramic bipolar may reduce the typical bipolar related complication and exert less effect on the acetabular cartilage due to less surface coefficient of friction.
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Affiliation(s)
- Toru Yoshioka
- Department of Orthopaedic Surgery, Shimura Hospital, 3-13 Funairimachi, Naka-ku, Hiroshima-shi, Hiroshima, 731-0841, Japan.
| | - Nobukazu Okimoto
- Okimoto Clinic, 185-4 Yutakamachi Kubi, Kure-shi, Hiroshima, 734-0304, Japan
| | - Yoshifumi Fuse
- Department of Orthopaedic Surgery, Sakamidorii Hospital, 6-28-1 Midorii, Asaminami-ku, Hiroshima-shi, Hiroshima, 731-0103, Japan
| | - Makoto Kawasaki
- Department of Orthopaedic Surgery, University of Occupational and Environmental Health, 1-1 Iseigaoka, Yahatanishi-ku, Kitakyushu-shi, Fukuoka, 807-0804, Japan
| | - Toshiharu Mori
- Department of Orthopaedic Surgery, Shinkokura Hospital, 1-3-1 Kaneda, Kokurakita-ku, Kitakyushu-shi, Fukuoka, 803-8505, Japan
| | - Akinori Sakai
- Department of Orthopaedic Surgery, University of Occupational and Environmental Health, 1-1 Iseigaoka, Yahatanishi-ku, Kitakyushu-shi, Fukuoka, 807-0804, Japan
| | - Tokifumi Majima
- Department of Orthopaedic Surgery, Nippon Medical School, 1-1-5 Sendagi, Bunkyo-ku, Tokyo, 113-8602, Japan
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Spartacus V, Vargiolu R, Zahouani H, Nemoz-Gaillard M, Chabrand P. Multi-scale analysis of cartilage surface for trapeziometacarpal hemi-arthroplasty. BIOSURFACE AND BIOTRIBOLOGY 2017. [DOI: 10.1016/j.bsbt.2017.06.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Articulation of Native Cartilage Against Different Femoral Component Materials. Oxidized Zirconium Damages Cartilage Less Than Cobalt-Chrome. J Arthroplasty 2017; 32:256-262. [PMID: 27452139 DOI: 10.1016/j.arth.2016.06.024] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/09/2016] [Revised: 05/26/2016] [Accepted: 06/09/2016] [Indexed: 02/01/2023] Open
Abstract
BACKGROUND Oxidized zirconium (OxZr) is produced by thermally driven oxidization creating an oxidized surface with the properties of a ceramic at the top of the Zr metal substrate. OxZr is much harder and has a lower coefficient of friction than cobalt-chrome (CoCr), both leading to better wear characteristics. We evaluated and compared damage to the cartilage of porcine patella plugs, articulating against OxZr vs CoCr. Our hypothesis was that, owing to its better wear properties, OxZr would damage cartilage less than CoCr. If this is true, OxZr might be a better material for the femoral component during total knee arthroplasty if the patella is not resurfaced. METHODS Twenty-one plugs from porcine patellae were prepared and tested in a reciprocating pin-on-disk machine while lubricated with bovine serum and under a constant load. Three different configurations were tested: cartilage-cartilage as the control group, cartilage-OxZr, and cartilage-CoCr. Macroscopic appearance, cartilage thickness, and the modified Mankin score were evaluated after 400,000 wear cycles. RESULTS The control group showed statistically significant less damage than plugs articulating against both other materials. Cartilage plugs articulating against OxZr were statistically significantly less damaged than those articulating against CoCr. CONCLUSION Although replacing cartilage by an implant always leads to deterioration of the cartilage counterface, OxZr results in less damage than CoCr. The use of OxZr might thus be preferable to CoCr in case of total knee arthroplasty without patella resurfacing.
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Peng G, McNary SM, Athanasiou KA, Reddi AH. Superficial Zone Extracellular Matrix Extracts Enhance Boundary Lubrication of Self-Assembled Articular Cartilage. Cartilage 2016; 7:256-64. [PMID: 27375841 PMCID: PMC4918063 DOI: 10.1177/1947603515612190] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
OBJECTIVE Previous work has shown that increasing the production of boundary lubricant, superficial zone protein (SZP), did not reduce the friction coefficient of self-assembled articular cartilage constructs and was possibly due to poor retention of the lubricant. The aim of this investigation was to reduce the friction coefficient of self-assembled articular cartilage constructs through enhancing SZP retention by the exogenous addition of extracellular matrix (ECM) extracted from the superficial zone of native articular cartilage. DESIGN Superficial zone cartilage was shaved from juvenile bovine femoral condyles using a dermatome, minced finely with razor blades, extracted with 4 M guanidine-hydrochloride, buffer exchanged with culture medium, and added directly to the culture medium of self-assembled articular cartilage constructs at low (10 µg/mL) and high (100 µg/mL) concentrations for 4 weeks. Biochemical and biomechanical properties were determined at the conclusion of 4 weeks culture. RESULTS ECM treatment increased compressive and tensile stiffness of self-assembled articular cartilage constructs and decreased the friction coefficient. Glycosaminoglycan content decreased and collagen content increased significantly in self-assembled constructs by the ECM treatment. CONCLUSIONS Friction coefficients of self-assembled articular cartilage constructs were reduced by adding extracted superficial zone ECM into the culture medium of self-assembled articular cartilage constructs.
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Affiliation(s)
- Gordon Peng
- Lawrence Ellison Center for Tissue Regeneration and Repair, Department of Orthopaedic Surgery, School of Medicine, University of California, Davis, Sacramento, CA, USA
| | - Sean M. McNary
- Lawrence Ellison Center for Tissue Regeneration and Repair, Department of Orthopaedic Surgery, School of Medicine, University of California, Davis, Sacramento, CA, USA
| | - Kyriacos A. Athanasiou
- Lawrence Ellison Center for Tissue Regeneration and Repair, Department of Orthopaedic Surgery, School of Medicine, University of California, Davis, Sacramento, CA, USA,Department of Biomedical Engineering, University of California, Davis, CA, USA
| | - A. Hari Reddi
- Lawrence Ellison Center for Tissue Regeneration and Repair, Department of Orthopaedic Surgery, School of Medicine, University of California, Davis, Sacramento, CA, USA,A. Hari Reddi, Department of Orthopaedic Surgery, School of Medicine, University of California, Davis, Research Building I, Room 2000, Sacramento, CA 95817, USA.
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10
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Rapid prototyping for in vitro knee rig investigations of prosthetized knee biomechanics: comparison with cobalt-chromium alloy implant material. BIOMED RESEARCH INTERNATIONAL 2015; 2015:185142. [PMID: 25879019 PMCID: PMC4388012 DOI: 10.1155/2015/185142] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/19/2014] [Accepted: 09/27/2014] [Indexed: 12/24/2022]
Abstract
Retropatellar complications after total knee arthroplasty (TKA) such as anterior knee pain and subluxations might be related to altered patellofemoral biomechanics, in particular to trochlear design and femorotibial joint positioning. A method was developed to test femorotibial and patellofemoral joint modifications separately with 3D-rapid prototyped components for in vitro tests, but material differences may further influence results. This pilot study aims at validating the use of prostheses made of photopolymerized rapid prototype material (RPM) by measuring the sliding friction with a ring-on-disc setup as well as knee kinematics and retropatellar pressure on a knee rig. Cobalt-chromium alloy (standard prosthesis material, SPM) prostheses served as validation standard. Friction coefficients between these materials and polytetrafluoroethylene (PTFE) were additionally tested as this latter material is commonly used to protect pressure sensors in experiments. No statistical differences were found between friction coefficients of both materials to PTFE. UHMWPE shows higher friction coefficient at low axial loads for RPM, a difference that disappears at higher load. No measurable statistical differences were found in knee kinematics and retropatellar pressure distribution. This suggests that using polymer prototypes may be a valid alternative to original components for in vitro TKA studies and future investigations on knee biomechanics.
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Lizhang J, Taylor SD, Jin Z, Fisher J, Williams S. Effect of clearance on cartilage tribology in hip hemi-arthroplasty. Proc Inst Mech Eng H 2013; 227:1284-91. [DOI: 10.1177/0954411913502156] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Hemi-arthroplasty of the hip (an artificial femoral head articulating against the natural acetabulum) is used to treat fractured necks of femur; however, there is evidence that articulation causes erosion of the cartilage, resulting in pain for the patient. Parameters that may influence this cartilage erosion include head material and roughness, clearance between the head and acetabulum and activity levels of the patient. This study has assessed the effect of clearance of hemi-arthroplasty articulations on the contact stress, friction and cartilage deformation in an in vitro tribological simulation of the hemi-arthroplasty joint that applied dynamic loads and motion. It has been demonstrated that peak contact stress increased from 5.6 to 10.6 MPa as radial clearance increased from small (<0.6 mm) to extra-large (>1.8 mm). In all samples, friction factor increased with time and was significantly less with extra-large clearances compared to small (<0.6 mm), medium (0.6–1.2 mm) and large (1.2–1.8 mm) clearances. The cartilage deformation observed was significantly greater in acetabulum samples paired to give small or extra-large clearances compared to those with medium or large clearances.
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Affiliation(s)
- Jia Lizhang
- Institute of Medical and Biological Engineering, School of Mechanical Engineering, University of Leeds, Leeds, UK
| | - Simon D Taylor
- Institute of Medical and Biological Engineering, School of Mechanical Engineering, University of Leeds, Leeds, UK
| | - Zhongmin Jin
- School of Mechanical Engineering, Xi’an Jiaotong University, Xi’an, PR China
| | - John Fisher
- Institute of Medical and Biological Engineering, School of Mechanical Engineering, University of Leeds, Leeds, UK
| | - Sophie Williams
- Institute of Medical and Biological Engineering, School of Mechanical Engineering, University of Leeds, Leeds, UK
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Lescun TB, Baird DK, Oliver LJ, Adams SB, Hawkins JF, Moore GE. Comparison of hydroxyapatite-coated and uncoated pins for transfixation casting in horses. Am J Vet Res 2012; 73:724-34. [DOI: 10.2460/ajvr.73.5.724] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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13
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Gleghorn JP, Doty SB, Warren RF, Wright TM, Maher SA, Bonassar LJ. Analysis of frictional behavior and changes in morphology resulting from cartilage articulation with porous polyurethane foams. J Orthop Res 2010; 28:1292-9. [PMID: 20309861 DOI: 10.1002/jor.21136] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Porous polyurethane foams (PUR) have been extensively evaluated as meniscal replacement materials and show great promise enabling infiltration of cells and fibrocartilage formation in vivo. Similar to most materials, PUR demonstrates progressive degeneration of opposing cartilage; however, the damage mechanism is impossible to determine because no information exists on the frictional properties of PUR-cartilage interfaces. The goals of this study were to characterize the frictional behavior of a cartilage-PUR interface across a range of articulating conditions and assess the resulting morphological changes to the cartilage surface following articulation. Articular cartilage was oscillated against PUR or stainless steel using phosphate-buffered saline (PBS) and synovial fluid as lubricants. Following friction testing, cartilage and PUR samples were analyzed with environmental scanning electron microscopy and histological staining to determine changes in tissue morphology. Stribeck-surface analysis demonstrated distinct lubrication modes; however, boundary mode lubrication was dominant in cartilage-PUR interfaces and the low-friction pressure-borne lubrication mechanism present in native joints was absent. Microscopy noted obvious wear, with disruption of the collagen architecture and concomitant proteoglycan loss in cartilage articulated against PUR. These data collectively point to the importance of frictional properties as design parameters for implants and materials for soft tissue replacement.
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Affiliation(s)
- Jason P Gleghorn
- Department of Biomedical Engineering, Cornell University, 149 Weill Hall, Ithaca, New York 14853, USA
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Damm P, Graichen F, Rohlmann A, Bender A, Bergmann G. Total hip joint prosthesis for in vivo measurement of forces and moments. Med Eng Phys 2010; 32:95-100. [DOI: 10.1016/j.medengphy.2009.10.003] [Citation(s) in RCA: 67] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2009] [Revised: 09/25/2009] [Accepted: 10/03/2009] [Indexed: 11/16/2022]
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15
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Fok KS, Chou SM. Development of a finger biomechanical model and its considerations. J Biomech 2009; 43:701-13. [PMID: 19962148 DOI: 10.1016/j.jbiomech.2009.10.020] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2008] [Revised: 10/02/2009] [Accepted: 10/05/2009] [Indexed: 10/20/2022]
Abstract
The development of a biomechanical model for a human finger is faced with many challenges, such as extensor mechanism complexity, statistical indeterminacy and suitability of computational processes. Motivation for this work was to develop a computer model that is able to predict the internal loading patterns of tendons and joint surfaces experienced by the human finger, while mitigating these challenges. Proposed methodology was based on a non-linear optimising mathematical technique with a criterion of boundary conditions and equality equations, maximised against unknown parameters to reduce statistical indeterminacy. Initial validation was performed via the simulation of one dynamic and two static postures case studies. Past models and experiments were used, based on published literature, to verify the proposed model's methodology and results. The feasibility of the proposed methodology was deemed satisfactory as the simulated results were concordant with in-vivo results for the extrinsic flexors.
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Affiliation(s)
- Kim Seng Fok
- School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore.
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Katta J, Jin Z, Ingham E, Fisher J. Biotribology of articular cartilage--a review of the recent advances. Med Eng Phys 2008; 30:1349-63. [PMID: 18993107 DOI: 10.1016/j.medengphy.2008.09.004] [Citation(s) in RCA: 146] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2008] [Revised: 09/17/2008] [Accepted: 09/22/2008] [Indexed: 11/24/2022]
Abstract
A brief review of the advances in the biotribology of articular cartilage in the last decade or so are presented. The review is limited to experimental friction and wear studies involving articular cartilage. The importance of developing in vitro models as tools not only to understand the cartilage tribological characteristics, but to evaluate current and future cartilage substitution and treatment therapies is discussed.
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Affiliation(s)
- Jayanth Katta
- Institute of Medical and Biological Engineering, School of Mechanical Engineering, University of Leeds, Leeds, West Yorkshire LS2 9JT, UK
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Jung M, Wieloch P, Lorenz H, Gotterbarm T, Veyel K, Daniels M, Martini AK, Daecke W. Comparison of cobalt chromium, ceramic and pyrocarbon hemiprostheses in a rabbit model: Ceramic leads to more cartilage damage than cobalt chromium. J Biomed Mater Res B Appl Biomater 2008; 85:427-34. [DOI: 10.1002/jbm.b.30961] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Use of oxidized zirconium hemiarthroplasty in hip fractures: clinical results and spectrum analysis. J Arthroplasty 2007; 22:1174-80. [PMID: 18078887 DOI: 10.1016/j.arth.2006.10.018] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/27/2006] [Accepted: 10/28/2006] [Indexed: 02/01/2023] Open
Abstract
Oxidized zirconium may have improved wear characteristics against polyethylene, but its performance against native cartilage is unknown. Between 1996 and 1998, 52 patients received an oxidized zirconium hemiarthroplasty for the treatment of a hip fracture. Twelve patients (23%) died within 1 year of surgery, and 24 (46%) were surviving at 5 years. In 38 patients with minimum 2-years follow-up, clinical evaluation after surgery averaged 4.5 years with Harris hip scores averaging 78 (range, 55-92). Three patients radiographically showed acetabular protrusion or significant wear, with 2 undergoing revision surgery. An explanted prosthesis demonstrated no appreciable damage by spectrum analysis. Because of the high mortality rate after hip fracture, the clinical benefits of oxidized zirconium hemiarthroplasty in this population, if existent, are difficult to appreciate and currently show no benefits over standard prostheses.
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