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G Grappiolo

Publications and source records attributed to G Grappiolo.

4 recordsLinked to original sources
PubMed2005

Outcomes of the MS-30 cemented femoral stem.

The MS-30 (Morscher-Spotorno) cemented femoral stem is a straight, three-dimensionally tapered, collarless implant for cemented fixation in total hip replacement, manufactured from a FeCrNiMnMoNb-alloy. This paper documents the review of 4 original follow-ups performed at four orthopaedic hospitals: three at the author's institution (Basel/Switzerland 2, Pietra Ligure/Italy 1), and one at the University Orthopaedic Hospital of Heidelberg/ Germany. A total of 911 hips in 867 patients have been provided with the MS-30 stem. All stems were fixed with Palacos bone cement, the great majority with antibiotic (Gentamicine) loaded cement. The mean observation time was 10.2, 5.6, 10.2 and 6.5 years. One hundred and sixty-four hips were lost due to patients death, 121 patients were unable to come to the follow-up check. Ten patients only were lost to follow-up. The total number of hips with a clinical radiological follow-up was 597. The clinical and radiological assessment was in accordance with the International Documentation and Evaluation System (IDES) forms from the Institute of Documentation of the M.E. Müller Foundation in Berne/Switzerland. RESULTS The overall survivorship in the four follow-ups were 100% after 10 years, 98.4% and 99.2% after 5.5.years, 98.5% after 10 years and finally 96.1% after 6.5 years. The respective percentages of survival for aseptic loosening were 100%, 99.2%, 100%, 98.5% and 98.8%. CONCLUSION According to the NIH (National Institute of Health, United Kingdom) a survival rate of 95% regarding aseptic loosening justifies or even recommends further clinical use of the respective endoprosthesis system.

Aged↗
PubMed1993

The CLS system. Theoretical concept and results.

The CLS femoral prosthesis is a titanium stem designed as a 3-dimensional taper for press-fit implantation. The distal part of the prosthesis is intentionally made small so that it will not fill the intramedullary canal in the proximal diaphysis. The surface is bead blasted and has no bone ingrowth surface. Ribs in the proximal part of the prosthesis are designed to minimize rotational migration. The CLS acetabular component is a 6-sided expanding cup intended for implant with press-fit stabilization. This article emphasizes indications for use of the CLS, and it includes a brief report on clinical and radiographical results. Data from a review of the first 300 CLS stems implanted from 1983 to 1985 with an 82-month average follow-up suggested that neither bone ingrowth nor distal fit and fill are necessary for stable secondary fixation of an uncemented stem.

Adult↗
PubMedDate not supplied

First implant acetabular components: historical aspects, a comparison of models and a review of the literature.

The article describes the features of the most commonly-used acetabular components in first implants in light of development in construction as regards intrinsic features, materials used, biological behavior, and design. The following versions are examined: screwable cone-shaped trunk, cemented polyethylene, cemented metal-back, HA-coated press-fit, expansion, dysplastic hip, and anti-dislocating components. The screwable cone-shaped trunk acetabular component takes hold in the acetabular bone through torsion and compression, and threading provides greater stability as compared to equivalent models that have wings or screws. Cemented polyethylene acetabular components are characterized by low costs and good results, on the condition that some specific parameters are respected (the presence of a dry bone bed, pressurization of the cement, use in elderly patients who do very little physical activity). Cemented metal-back acetabular components have features similar to polyethylene components, from which they differ because of the possibility of being able to substitute the internal polyethylene component without having to revision the entire acetabulum. HA-coated press-fit components have solved the problems encountered in cemented versions, such as loosening and the generation of polyethylene particulate, at the same time obtaining excellent osteo-integration. The expansion cup self-stabilizes thanks to a memory effect due to the contraction-relaxation mechanism with which it is lodged, adapting to the micro-movements of the acetabulum. Components used in the dysplastic hip are particular versions with a reduced diameter that have specific hooks that provide stabilization, capable of settling in the pathologic bone with minimum reaming of the same. Anti-dislocation cups are special models that have bipolar inserts or a ring (plastic or metal) that blocks the head in the prosthetic acetabulum, obstructing its dislocation.

Acetabulum↗