Retrieved implants

PiatteUi A, Scarauo A, PiatteUi M, Bertolai R, Panzoni E. Histologic aspects of the boue aud soft tissues surrounding three titanium uou-submerged plasma-sprayed implants retrieved at autopsy a case report. J Periodontol 1997 68(7) 694-700. 

Journal of Biomedical Materials Research Part B Applied Biomaterials. Hoboken, NJ Wiley Interscience. ISSN 0021-9304. A section of the Journal of Biomedical Materials Research, Applied Biomaterials reports on device development, implant retrieval and analysis, manufacturing, regulation of devices, liability and legal issues standards, reviews of different device areas, and clinical applications relating to applied biomaterials. Peer-reviewed. Official publication of the Society for Biomaterials (US) and Japanese Society for Biomaterials, the Australian Society for Biomaterials, and the Korean Society for Biomaterials. 

Bloebaum RD, Bachus KN, Rubman MH, Dorr LD (1993) Postmortem comparative analysis of titanium and hydroxylapatite porous-coated femoral implants retrieved from the same patient. A case study. J Arthroplasty 8 203-211... 

Weinstein, A.M., Spires, WP. Ir, Klawitter et al., 1979. Orthopaedic implant retrieval and analysis study. In Corrosion and Degradation of Implant Materials, B.C. Syrett and A. Acharya (Eds.), pp. 212-228, American Society for Testing and Materials Tech. Pub. No. 684, Philadelphia, PA. 

Implant retrieval and evaluation plays a significant role in determining biocompatibility, factors and mechanisms of medical device failure or success, and new biological design criteria for next-generation devices. ... 

The cross-sectional view of a worn PTFE implant, retrieved with its cement mantle. 

Endovascular prosfheses, assembled from tubular textile fabric and wire stent components, are deployed and expanded non-invasively from catheters for the rq>air of aneurysms in medium and large caliber arteries. Now that the implantation procedure is no longer experimental and these devices are becoming widely accepted and used for a growing cohort of patients, so the incidence of reported cases of late complications continues to grow. Observations from our own implant retrieval programme have led us to report that certain styles and models of endovascular prostheses are associated with particular failure mechanisms, such as endoleaks, migration, thrombosis, stent disruption, as well as fabric distortion and perforation. 

Steflik, D.E., Parr, G.R., Singh, B.B. et al. (1994) Light microscopic and scanning electron microscopic analyses of dental implants retrieved from humans. J. Oral Implantol, 20(1), 8-24. 

Abstract The biocompatibihty, biofunctionahty and biostability of a prosthesis, its degradation and the host response are determined throngh an implant retrieval stndy.This chapter focnses on varions aspects of analyzing retrieved biotextile implants. Sample preparation techniques, analytical test methods and different test standards are reviewed. Some precautions and the limitations of implant retrieval studies are also discussed. 

Key words analytical techniques, biotextUes, explant, implant retrieval, medical textiles. 

Standards and animal models for implant retrieval studies... 

Retrieval study samples from human beings are more difficult to obtain and are usually available as a result of an unscheduled reoperation or autopsy, either of which could be due to device failure or to some totally unrelated cause. Implants retrieved at reoperation are generally in a poorer condition since they are often collected in response to emergency surgery where the patient is the primary concern and the preservation and integrity of the biotextile explant is of limited interest. It is therefore mandatory to include with every clinically retrieved sample some explanation... 

Some critical information about the retrieved implant can only be obtained immediately at the time of harvesting. Some investigational techniques require sample preparation while others require the sample to be first thoroughly cleaned. Due to the destructive nature of some analytical techniques, they have to be performed only after various other tests have been carried out. Given the limited size of samples, sequential planning of sample analysis is very important. Both the ASTM and ISO implant retrieval standards prescribe a three-stage approach to implant analysis ... 

With rapid advances in less invasive surgical methods, devices are now being implanted using laparoscopic techniques. However, we have not as yet seen device manufacturers developing devices or techniques to enable implant retrieval via the same less invasive approaches. Hence, there is a need to develop biotextile devices that lend themselves to laproscopic retrieval procedures, which will facilitate the surgical approach for reoperations. 

R. Guidon, M. King, P. Blais, M. Marois, C. Gosselin, P. Roy, R. Courbier, M. David and H. Noel, A biological and structural evaluation of retrieved Dacron arterial prostheses , in NBS Special Publication 601 - Implant Retrieval ... 

A very effective method of analysing the wear of polymer parts in joint replacement implants is to make measurements on implants retrieved from patients. This typically happens where revision surgery is performed and... 

McGee MA, Howie DW, Costi K, Haynes DR, Wildenauer Cl, Pearcy MJ, et al. Implant retrieval studies of the wear and loosening of prosthetic joints a review. Wear 2000 241 158-65. 

Many large-scale retrieval studies have been conducted involving hundreds of implants. Although corrosion of the devices is only one of many topics that are the subjects of retrieval analyses, this type of investigation has yielded the majority of the knowledge that has been amassed regarding corrosion in vivo. ASTM F 561, Practice for Retrieval and Analysis of Implanted Medical Devices, and Associated Tissues, governs the performance of implant retrieval analyses. 

Bundy, K J. and Collier, J. P., "Mechanistic Studies of Corrosion of Galvanically Coupled Alloys Used in Modular Total Hip Replacement Devices, Transactions of the Implant Retrieval Symposium, 1992, Pheasant Run, IL, p. 55. 

Weinstein, A. M., Spires, W. P., Klawitter, J. J., et al., Orthopedic Implant Retrieval and Analysis Study, Corrosion and Degradation of Implant Materials, ASTM STP 684, B. Syrett and A. Archarya, Eds., ASTM International, West Conshohocken, PA, 1979, pp. 212-228. 

Harding, A. F., Cook, S. D., and Thomas, K. A., Orthopaedic Implant Retrieval Clinical Performance, Metallurgical Characteristics and Tissue Reaction in 250 Internal Fixation Devices, Proceedings of the 5th Southern Biomedical Engineering Conference, Petgamon Phess, NY, 1985, pp. 282-288. 

Sauer, W., Kovacs, P., Beals, N., and Cuckler, J., "Corrosion at Head/Taper Interfaces A 3.5 Year Follow-Up of Modular Head/Ti-6A1-4V Femoral Stem Prostheses, Implant Retrieval Symposium Transactions, Vol. XV, Society for Biomaterials, 1992, p. 56. 

A healthy 46-year-old patient developed progressively worsening symptoms of cobalt toxicity following 6 months of synovectomy and replacement of ceramic-on-ceramic hip bearing to a metal-on-polyethylene bearing. Blood cobalt concentration peaked at 6521 p /L. The patient died from cobalt-induced cardiomyopathy. Implant retrieval analysis confirmed a loss qf28.3g mass cfthe cobalt-chromium femoral head as a result of severe abrasive wear by ceramic particles embedded in the revision polyethylene liner [83 ]. 

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