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Frommelt L. [Use of antibiotics in bones : Prophylaxis and current treatment standards]. DER ORTHOPADE 2019; 47:24-29. [PMID: 29222580 DOI: 10.1007/s00132-017-3508-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
BACKGROUND Treatment of bone infection is difficult due the systemic administration of antibiotics, which means that only low concentrations reach the inflamed bone tissue. Loss of bone stock is common in osteomyelitis and device associated infection. Local antibiotics are administered in several ways for prophylactic purposes and also for treatment of bone infection. We intend to show the options and limitations of clinical use of antibiotic-loaded bone grafts. SUITABILITY Bone grafts are a suitable carrier system for antibiotics. Bone grafts may be loaded with a variety of antimicrobial agents so that individual therapies may be carried out. Critical systemic side effects are unlikely even though extreme high drug concentrations are obtained locally, if the thresholds for loading with antibiotics are respected. Thus, antibiotic-loaded bone grafts are appropriate for prophylaxis and therapy as well. If processing is done in the operating theatre compliance to the legal rules must be respected. RULES Due to a lack of standardised procedures for loading, application and performance of the application of antibiotic-loaded bone grafts medical societies are being asked to initiate consensus meetings in order to issue recommendations or guidelines with respect to antibiotic-loaded bone grafts to establish reliable rules for surgeons using these devices.
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Affiliation(s)
- L Frommelt
- Institut für Klinische Mikrobiologie, Infektiologie und Krankenhaushygiene, HELIOS ENDO-Klinik Hamburg, Holstenstr. 2, 22767, Hamburg, Deutschland.
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General Assembly, Prevention, Local Antimicrobials: Proceedings of International Consensus on Orthopedic Infections. J Arthroplasty 2019; 34:S75-S84. [PMID: 30352772 DOI: 10.1016/j.arth.2018.09.056] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
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Van Cauter M, Cornu O, Yombi JC, Rodriguez-Villalobos H, Kaminski L. The effect of storage delay and storage temperature on orthopaedic surgical samples contaminated by Staphylococcus Epidermidis. PLoS One 2018; 13:e0192048. [PMID: 29554102 PMCID: PMC5858844 DOI: 10.1371/journal.pone.0192048] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2017] [Accepted: 12/15/2017] [Indexed: 11/29/2022] Open
Abstract
Background Prosthetic Joint Infection (PJI) is a rare but devastating complications with high morbitity and mortality. The identification of the causal microorganism remains crucial and determines therapeutic strategies and success. Microbiology cultures remain the common method to diagnose PJI. Unfortunately, 14% of intra-articular punctures remain negative after culture. The microorganisms are best detected by inoculation of microbiology samples in blood culture bottles (Bactec), or after sonication of the implant and polymerase chain reaction (PCR). The identification of the causal microorganism remains crucial and determines therapeutic success. Objectives This study was conducted to assess the effect of culture lead time and sample storage temperature on the detection of the pathogen. Methods We obtained bone fragments from femoral heads during primary arthroplasty. Bone fragments were contaminated with a strain of Staphylococcus epidermidis. Four set-ups with different combinations of storage delay and storage temperature were tested. Results Our study shows the need to cultivate as soon as possible and optimally within 2h after the completion of sampling. Temporary storage in a refrigerator at 4°C also appears to have a positive influence on bacterial viability. At present, these conclusions concern only the Staphylococcus Epidermidis. Others studies are requested to generalize this conclusion to other bacteria.
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Affiliation(s)
- Maïté Van Cauter
- Department of Orthopedic Surgery, Cliniques Universitaires Saint Luc, Brussels, Belgium
- * E-mail:
| | - Olivier Cornu
- Department of Orthopedic Surgery, Cliniques Universitaires Saint Luc, Brussels, Belgium
| | - Jean-Cyr Yombi
- Department of Orthopedic Surgery, Cliniques Universitaires Saint Luc, Brussels, Belgium
- Department of Internal Medicine and Infectious Diseases, Cliniques Universitaires Saint Luc, Brussels, Belgium
| | | | - Ludovic Kaminski
- Department of Orthopedic Surgery, Cliniques Universitaires Saint Luc, Brussels, Belgium
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Abstract
The treatment of chronic bone and joint infections is characterized by obstinate persistency of the causing microorganisms and resulting long term disability to patients, associated with remarkable costs for the health care system. Difficulties derive from biofilm formed on dead bone and eventual implants, with resistance against immunological defences and antimicrobial substances. Biofilm embedded bacteria require up to 1000 times the antibiotic concentration of planktonic bacteria for elimination. Systemic antibiotic treatment alone cannot provide the concentrations required and surgical intervention is always prerequisite for potentially providing a cure. A second issue is that osseous defects are almost always present after surgical debridement, and it is difficult to address their reconstruction. One option is to use bone grafts, either from the patient´s own body or from foreign donors (allografts). Grafts are usually unvascularized and are prone to colonization with bacteria. Loading of allografts with antibiotics may not only protect grafts from bacterial adhesion but, using appropriate processing methods, may also provide high local antibiotic concentrations that may eliminate remaining sessile pathogens. For efficient action as antibiotic carriers, the release of antibiotics should be above the minimum biofilm eradication concentration (MBEC) for a prolonged period of time. Cleaning the bone from bone marrow opens a large reservoir for storage of antimicrobial substances that, after implantation, may be released to the surrounding in a sustained mode, possibly eliminating remaining biofilm remnants. Removal of bone marrow, leaving a pure matrix, provides increased safety and improved revascularization of the graft. Local provision of antibiotic concentrations above the MBEC may enable simultaneous internal fixation with osteosynthetic material and single stage exchange of infected endoprostheses, resulting in shorter hospital stays with reduced pain and faster rehabilitation of patients.
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Affiliation(s)
- Heinz Winkler
- Osteitis Centre, Privatklinik Döbling Wien, Heiligenstaedter Strasse 57-63, A-1190 Wien, AUSTRIA
| | - Peter Haiden
- Department of Traumatology, Landesklinikum Korneuburg, Wiener Ring 3-5, 2100 Korneuburg, AUSTRIA
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Brooks AE, Brooks BD, Davidoff SN, Hogrebe PC, Fisher MA, Grainger DW. Polymer-controlled release of tobramycin from bone graft void filler. Drug Deliv Transl Res 2015; 3:518-30. [PMID: 25786372 DOI: 10.1007/s13346-013-0155-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Despite clinical, material, and pharmaceutical advances, infection remains a major obstacle in total joint revision surgery. Successful solutions must extend beyond bulk biomaterial and device modifications, integrating locally delivered pharmaceuticals and physiological cues at the implant site, or within large bone defects with prominent avascular spaces. One approach involves coating clinically familiar allograft bone with an antibiotic-releasing rate-controlling polymer membrane for use as a matrix for local drug release in bone. The kinetics of drug release from this system can be tailored via alterations in the substrate or the polymeric coating. Drug-loaded polycaprolactone coating releases bioactive tobramycin from both cadaveric-sourced cancellous allograft fragments and synthetic hybrid coralline ceramic bone graft fragments with similar kinetics over a clinically relevant 6-week timeframe. However, micron-sized allograft particulate provides extended bioactive tobramycin release. Addition of porogen polyethylene glycol to the polymer coating formulation changes tobramycin release kinetics without significant impact on released antibiotic bioactivity. Incorporation of oil-microencapsulated tobramycin into the polymer coating did not significantly modify tobramycin release kinetics. In addition to releasing inhibitory concentrations of tobramycin, antibiotic-loaded allograft bone provides recognized beneficial osteoconductive potential, attractive for decreasing orthopedic surgical infections with improved filling of dead space and new bone formation.
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Affiliation(s)
- Amanda E Brooks
- Department of Pharmaceutics and Pharmaceutical Chemistry, University of Utah, Salt Lake City, UT, 84112-5820, USA,
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Bozhkova SA, Novokshonova AA, Konev VA. Current trends in local antibacterial therapy of periprosthetic infection and osteomyelitis. ACTA ACUST UNITED AC 2015. [DOI: 10.21823/2311-2905-2015-0-3-92-107] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
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Hansen E, Belden K, Silibovsky R, Vogt M, Arnold WV, Bicanic G, Bini SA, Catani F, Chen J, Ghazavi MT, Godefroy KM, Holham P, Hosseinzadeh H, Kim KII, Kirketerp-Møller K, Lidgren L, Lin JH, Lonner JH, Moore CC, Papagelopoulos P, Poultsides L, Randall RL, Roslund B, Saleh K, Salmon JV, Schwarz EM, Stuyck J, Dahl AW, Yamada K. Perioperative antibiotics. J Arthroplasty 2014; 29:29-48. [PMID: 24355256 DOI: 10.1016/j.arth.2013.09.030] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Affiliation(s)
- Erik Hansen
- Rothman Institute at Thomas Jefferson University, Philadelphia, Pennsylvania
| | - Katherine Belden
- Rothman Institute at Thomas Jefferson University, Philadelphia, Pennsylvania
| | - Randi Silibovsky
- Rothman Institute at Thomas Jefferson University, Philadelphia, Pennsylvania
| | - Markus Vogt
- Rothman Institute at Thomas Jefferson University, Philadelphia, Pennsylvania
| | - William V Arnold
- Rothman Institute at Thomas Jefferson University, Philadelphia, Pennsylvania
| | - Goran Bicanic
- Rothman Institute at Thomas Jefferson University, Philadelphia, Pennsylvania
| | - Stefano A Bini
- Rothman Institute at Thomas Jefferson University, Philadelphia, Pennsylvania
| | - Fabio Catani
- Rothman Institute at Thomas Jefferson University, Philadelphia, Pennsylvania
| | - Jiying Chen
- Rothman Institute at Thomas Jefferson University, Philadelphia, Pennsylvania
| | - Mohammad T Ghazavi
- Rothman Institute at Thomas Jefferson University, Philadelphia, Pennsylvania
| | - Karine M Godefroy
- Rothman Institute at Thomas Jefferson University, Philadelphia, Pennsylvania
| | - Paul Holham
- Rothman Institute at Thomas Jefferson University, Philadelphia, Pennsylvania
| | - Hamid Hosseinzadeh
- Rothman Institute at Thomas Jefferson University, Philadelphia, Pennsylvania
| | - Kang I I Kim
- Rothman Institute at Thomas Jefferson University, Philadelphia, Pennsylvania
| | | | - Lars Lidgren
- Rothman Institute at Thomas Jefferson University, Philadelphia, Pennsylvania
| | - Jian Hao Lin
- Rothman Institute at Thomas Jefferson University, Philadelphia, Pennsylvania
| | - Jess H Lonner
- Rothman Institute at Thomas Jefferson University, Philadelphia, Pennsylvania
| | - Christopher C Moore
- Rothman Institute at Thomas Jefferson University, Philadelphia, Pennsylvania
| | | | - Lazaros Poultsides
- Rothman Institute at Thomas Jefferson University, Philadelphia, Pennsylvania
| | - R Lor Randall
- Rothman Institute at Thomas Jefferson University, Philadelphia, Pennsylvania
| | - Brian Roslund
- Rothman Institute at Thomas Jefferson University, Philadelphia, Pennsylvania
| | - Khalid Saleh
- Rothman Institute at Thomas Jefferson University, Philadelphia, Pennsylvania
| | - Julia V Salmon
- Rothman Institute at Thomas Jefferson University, Philadelphia, Pennsylvania
| | - Edward M Schwarz
- Rothman Institute at Thomas Jefferson University, Philadelphia, Pennsylvania
| | - Jose Stuyck
- Rothman Institute at Thomas Jefferson University, Philadelphia, Pennsylvania
| | - Annette W Dahl
- Rothman Institute at Thomas Jefferson University, Philadelphia, Pennsylvania
| | - Koji Yamada
- Rothman Institute at Thomas Jefferson University, Philadelphia, Pennsylvania
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Hansen E, Belden K, Silibovsky R, Vogt M, Arnold W, Bicanic G, Bini S, Catani F, Chen J, Ghazavi M, Godefroy KM, Holham P, Hosseinzadeh H, Kim KII, Kirketerp-Møller K, Lidgren L, Lin JH, Lonner JH, Moore CC, Papagelopoulos P, Poultsides L, Randall RL, Roslund B, Saleh K, Salmon JV, Schwarz E, Stuyck J, Dahl AW, Yamada K. Perioperative antibiotics. J Orthop Res 2014; 32 Suppl 1:S31-59. [PMID: 24464896 DOI: 10.1002/jor.22549] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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Kluin OS, van der Mei HC, Busscher HJ, Neut D. Biodegradable vs non-biodegradable antibiotic delivery devices in the treatment of osteomyelitis. Expert Opin Drug Deliv 2013; 10:341-51. [PMID: 23289645 DOI: 10.1517/17425247.2013.751371] [Citation(s) in RCA: 97] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
INTRODUCTION Chronic osteomyelitis, or bone infection, is a major worldwide cause of morbidity and mortality, as it is exceptionally hard to treat due to patient and pathogen-associated factors. Successful treatment requires surgical debridement together with long-term, high antibiotic concentrations that are best achieved by local delivery devices, either made of degradable or non-degradable materials. AREAS COVERED Non-degradable delivery devices are frequently constituted by polymethylmethacrylate-based carriers. Drawbacks are the need to remove the carrier (as the carrier itself may provide a substratum for bacterial colonization), inefficient release kinetics and incompatibility with certain antibiotics. These drawbacks have led to the quest for degradable alternatives, but also devices made of biodegradable calcium sulphate, collagen sponges, calcium phosphate or polylactic acids have their specific disadvantages. EXPERT OPINION Antibiotic treatment of osteomyelitis with the current degradable and non-degradable delivery devices is effective in the majority of cases. Degradable carriers have an advantage over non-degradable carriers that they do not require surgical removal. Synthetic poly(trimethylene carbonate) may be preferred in the future over currently approved lactic/glycolic acids, because it does not yield acidic degradation products. Moreover, degradable poly(trimethylene carbonate) yields a zero-order release kinetics that may not stimulate development of antibiotic-resistant bacterial strains due to the absence of long-term, low-concentration tail-release.
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Affiliation(s)
- Otto S Kluin
- Department of Biomedical Engineering, W. J. Kolff Institute, University Medical Center Groningen, Antonius Deusinglaan 1, 9713 AV Groningen , The Netherlands
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Antibiotic-impregnated bone grafts in orthopaedic and trauma surgery: a systematic review of the literature. Int J Biomater 2012; 2012:538061. [PMID: 22899933 PMCID: PMC3412111 DOI: 10.1155/2012/538061] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2012] [Accepted: 06/06/2012] [Indexed: 11/17/2022] Open
Abstract
There exist several options for local antibiotic therapy in orthopaedic and trauma surgery. Over the past years, the use of antibiotic-impregnated bone grafts (AIBGs) has become a popular procedure in the treatment of bone and joint infections. A major advantage of AIBGs involves the possibility of impregnation of various antibiotics depending on the sensitivity profile of the causative organism, whereas an additional surgery with removal of the antibiotic carrier is not necessary, as in the use of antibiotic-loaded bone cement. However, generalized conclusions cannot be clearly drawn from the existing literature due to differences of bone used, impregnation method, antibiotics, their doses, laboratory circumstances, or clinical indications. The present work reviews the literature regarding this topic and sheds some light onto the choice of bone and antibiotics, manufacturing details, and clinical experience.
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Impregnation of bone chips with alendronate and cefazolin, combined with demineralized bone matrix: a bone chamber study in goats. BMC Musculoskelet Disord 2012; 13:44. [PMID: 22443362 PMCID: PMC3338367 DOI: 10.1186/1471-2474-13-44] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/03/2011] [Accepted: 03/24/2012] [Indexed: 11/26/2022] Open
Abstract
Background Bone grafts from bone banks might be mixed with bisphosphonates to inhibit the osteoclastic response. This inhibition prevents the osteoclasts to resorb the allograft bone before new bone has been formed by the osteoblasts, which might prevent instability. Since bisphosphonates may not only inhibit osteoclasts, but also osteoblasts and thus bone formation, we studied different bisphosphonate concentrations combined with allograft bone. We investigated whether locally applied alendronate has an optimum dose with respect to bone resorption and formation. Further, we questioned whether the addition of demineralized bone matrix (DBM), would stimulate bone formation. Finally, we studied the effect of high levels of antibiotics on bone allograft healing, since mixing allograft bone with antibiotics might reduce the infection risk. Methods 25 goats received eight bone conduction chambers in the cortical bone of the proximal medial tibia. Five concentrations of alendronate (0, 0.5 mg/mL, 1 mg/mL, 2 mg/mL, and 10 mg/mL) were tested in combination with allograft bone and supplemented with cefazolin (200 μg/mL). Allograft not supplemented with alendronate and cefazolin served as control. In addition, allograft mixed with demineralized bone matrix, with and without alendronate, was tested. After 12 weeks, graft bone area and new bone area were determined with manual point counting. Results Graft resorption decreased significantly (p < 0.001) with increasing alendronate concentration. The area of new bone in the 1 mg/mL alendronate group was significantly (p = 0.002) higher when compared to the 10 mg/mL group. No differences could be observed between the group without alendronate, but with demineralized bone, and the control groups. Conclusions A dose-response relationship for local application of alendronate has been shown in this study. Most new bone was present at 1 mg/mL alendronate. Local application of cefazolin had no effect on bone remodelling.
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Defective osteogenic differentiation in the development of osteosarcoma. Sarcoma 2011; 2011:325238. [PMID: 21437219 PMCID: PMC3061279 DOI: 10.1155/2011/325238] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2010] [Revised: 12/19/2010] [Accepted: 12/20/2010] [Indexed: 12/21/2022] Open
Abstract
Osteosarcoma (OS) is associated with poor prognosis due to its high incidence of metastasis and chemoresistance. It often arises in areas of rapid bone growth in long bones during the adolescent growth spurt. Although certain genetic conditions and alterations increase the risk of developing OS, the molecular pathogenesis is poorly understood. Recently, defects in differentiation have been linked to cancers, as they are associated with high cell proliferation. Treatments overcoming these defects enable terminal differentiation and subsequent tumor inhibition. OS development may be associated with defects in osteogenic differentiation. While early regulators of osteogenesis are unable to bypass these defects, late osteogenic regulators, including Runx2 and Osterix, are able to overcome some of the defects and inhibit tumor propagation through promoting osteogenic differentiation. Further understanding of the relationship between defects in osteogenic differentiation and tumor development holds tremendous potential in treating OS.
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Mathijssen NMC, Petit PLC, Pilot P, Schreurs BW, Buma P, Bloem RM. Impregnation of bone chips with antibiotics and storage of antibiotics at different temperatures: an in vitro study. BMC Musculoskelet Disord 2010; 11:96. [PMID: 20500808 PMCID: PMC2887391 DOI: 10.1186/1471-2474-11-96] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/12/2009] [Accepted: 05/25/2010] [Indexed: 11/26/2022] Open
Abstract
Background Allograft bone used in joint replacement surgery can additionally serve as a carrier for antibiotics and serve as a prophylaxis against infections. However, in vitro dose-response curves for bone chips impregnated with different kinds of antibiotics are not available. In addition, while it would be desirable to add the antibiotics to allograft bone chips before these are stored in a bone bank, the effects of different storage temperatures on antibiotics are unknown. Methods Five different antibiotics (cefazolin, clindamycin, linezolid, oxacillin, vancomycin) were stored, both as pills and as solutions, at -80°C, -20°C, 4°C, 20°C and 37°C; in addition, bone chips impregnated with cefazolin and vancomycin were stored at -80°C and -20°C. After 1 month, 6 months and 1 year, the activity of the antibiotics against Staphylococcus epidermidis was measured using an inoculated agar. The diameter of the S. epidermidis-free zone was taken as a measure of antibiotic activity. In a separate experiment, in vitro dose-response curves were established for bone chips impregnated with cefazolin and vancomycin solutions at five different concentrations. Finally, the maximum absorbed amounts of cefazolin and vancomycin were established by impregnating 1 g of bone chips with 5 ml of antibiotic solution. Results A decrease of the S. epidermidis-free zone was seen with oxacillin and cefazolin solutions stored at 37°C for 1 month, with vancomycin stored at 37°C for 6 months and with cefazolin and oxacillin solutions stored at 20°C for 6 months. The activity of the other antibiotic solutions, pills and impregnated bone chips was not affected by storage. The in vitro dose-response curves show that the free-zone diameter increases logarithmically with antibiotic concentration. The absorbed antibiotic amount of one gram bone chips was determined. Conclusions Storage of antibiotics in frozen form or storage of antibiotic pills at temperatures up to 37°C for 12 months does not affect their activity. However, storage of antibiotic solutions at temperatures above 20°C does affect the activity of some of the antibiotics investigated. The in vitro dose-response curve can be used to determine the optimal concentration(s) for local application. It provides the opportunity to determine the antibiotic content of bone chips, and thus the amount of antibiotics available locally after application.
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Affiliation(s)
- Nina M C Mathijssen
- Netherlands Bone bank Foundation, Rijnsburgerweg 10, 2333 AA Leiden, The Netherlands.
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Winkler H, Stoiber A, Kaudela K, Winter F, Menschik F. One stage uncemented revision of infected total hip replacement using cancellous allograft bone impregnated with antibiotics. ACTA ACUST UNITED AC 2008; 90:1580-4. [PMID: 19043128 DOI: 10.1302/0301-620x.90b12.20742] [Citation(s) in RCA: 118] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Infection of a total hip replacement (THR) requires component removal and thorough local debridement. Usually, long-term antibiotic treatment in conjunction with a two-stage revision is required. This may take several months. One-stage revision using antibiotic-loaded cement has not gained widespread use, although the clinical and economic advantages are obvious. Allograft bone may be impregnated with high levels of antibiotics, and in revision of infected THR, act as a carrier providing a sustained high local concentration. We performed 37 one-stage revision of infected THRs, without the use of cement. There were three hips which required further revision because of recurrent infection, the remaining 34 hips (92%) stayed free from infection and stable at a mean follow-up of 4.4 years (2 to 8). No adverse effects were identified. Incorporation of bone graft was comparable with unimpregnated grafts. Antibiotic-impregnated allograft bone may enable reconstruction of bone stock, insertion of an uncemented implant and control of infection in a single operation in revision THR for infection.
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Affiliation(s)
- H Winkler
- Osteitis Center, Döbling, Vienna, Austria.
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Swieringa AJ, Goosen JHM, Jansman FGA, Tulp NJA. In vivo pharmacokinetics of a gentamicin-loaded collagen sponge in acute periprosthetic infection: serum values in 19 patients. Acta Orthop 2008; 79:637-42. [PMID: 18839370 DOI: 10.1080/17453670810016650] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
BACKGROUND The in vivo pharmacokinetics of gentamycin- loaded collagen fleeces in humans have not been described in the current literature. We therefore analyzed in vivo pharmacokinetics of these fleeces when used in the treatment of periprosthetic infections. PATIENTS AND METHODS Gentamycin concentrations were measured in 19 consecutive patients with an acute periprosthetic infection. Each patient received 2-5 fleeces (130 mg gentamycin/fleece). RESULTS Initially, the blood concentration increased to 3.2-7.2 mg/L, depending on the number of fleeces that were applied. The serum peak concentrations resulted in peak/MIC ratios of 2.5-36 for P. aeruginosa, S. aureus,and Klebsiella spp. Subsequently, the serum values decreased almost linearly below 0.3 mg/L in 18 to 62 hours. After 24 hours, the serum levels of gentamicin dropped below 2 mg/L, the toxicity threshold. INTERPRETATION The application of 2 to 5 130-mg gentamycin-loaded collagen fleeces may be useful as an adjuvant treatment for implant-related infections, since no toxic concentrations were measured 24 hours postoperatively.
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Affiliation(s)
- Anne J Swieringa
- Department of Orthopaedic Surgery and Traumatology, Isala Clinics Zwolle, Institute for Drug Exploration, University of Groningen, the Netherlands.
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Winkler H, Kaudela K, Stoiber A, Menschik F. Bone grafts impregnated with antibiotics as a tool for treating infected implants in orthopedic surgery – one stage revision results. Cell Tissue Bank 2006; 7:319-23. [PMID: 16710632 DOI: 10.1007/s10561-006-9010-3] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2005] [Accepted: 01/10/2006] [Indexed: 11/29/2022]
Abstract
Infection of an orthopedic implant is considered a devastating complication, necessitating its complete removal and thorough debridement of the site. Osseous defects are common in such conditions and need to be addressed before a new implant may be inserted. So far bone grafting has been contraindicated in bacterially contaminated areas and could only be performed as soon as all signs of infection have ceased. Usually long term antibiotic treatment and a multitude of surgical interventions within a period of several months is required until a definitive supply can be achieved. Allograft bone may be impregnated with high loads of antibiotics using special incubation techniques. Based on this technology 48 exchange procedures of infected orthopaedic implants were performed in a single stage, all of them without the use of bone cement. There were 37 infected hips, 8 knees and 3 infected osteosyntheses. Two hips required re-revision because of persisting infection, the remaining 46 patients stayed infect free for a period between 1 and 7 years after surgery. No adverse side effects could be found. Incorporation appeared as after grafting with unimpregnated bone grafts. Antibiotic loaded allograft bone is a powerful tool in septic revision surgery, enabling restoration of bone stock, insertion of a new implant and control of infection in a single operation.
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Affiliation(s)
- Heinz Winkler
- Orthopaedic Department, Weinviertel Klinikum, Schwerpunktkrankenhaus Mistelbach Liechtensteinstrasse, 67, A-2130, Mistelbach, Austria.
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Abstract
BACKGROUND Infection can be a devastating complication after implantation of a cortical bone allograft. The allograft could act as a vehicle for local antibiotic prophylaxis. MATERIAL AND METHODS We studied the release of antibiotics in vitro from cortical bone allografts impregnated with antibiotics for different periods of time. We also studied whether cortical allografts impregnated with antibiotics could eradicate Staphylococcus aureus from an experimentally infected graft in vivo. In the in vitro study, pieces of cortical bone were impregnated with netilmicin, vancomycin, ciprofloxacin and rifampicin for 1 h, 10 h and 100 h. The antibiotics were eluted into phosphate-buffered saline (PBS) for 7 days, with daily transfer of the bone into fresh PBS. In the in vivo study, cortical allografts impregnated with antibiotics were placed in rats intramuscularly. 10 microL of an S. aureus suspension (0.6 x 10(5) CFU) was placed in the intramedullary cavity. After 15 days, the allografts were removed and examined for bacterial growth. RESULTS The amount of antibiotics released in vitro was influenced by the time used for antibiotic impregnation of the bone. Allografts impregnated with netilmicin, vancomycin and rifampicin effectively eradicated perioperative contamination with S. aureus in vivo. INTERPRETATION This study shows that a cortical bone allograft would be an effective vehicle for local antibiotic delivery.
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Affiliation(s)
- Eivind Witsø
- Department of Orthopaedic Surgery, Norwegian University of Science and Technology, Trondheim.
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