A prospective study of the migration of two acetabular components

Krismer, Martin; Fischer, M.; Mayrhofer, P.; Stockl, Frank; Bittner, Claudia; Trojer, C.; Stöckl, B.

doi:10.1007/bf00180174

Cited by 16 publications

(10 citation statements)

References 19 publications

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“…Comparatively high rates of migration have been reported for uncemented femoral components of press-fit design (Wykman, Selvik and Goldie 1988;Nistor et al 1991;Kärrholm and Snorrason 1993;Nistor, Lundberg and Ackerholm 1994) and types of acetabular screw ring (Snorrason and Kärrholm 1990) which are known to have high revision rates at longer follow-up (Tallroth et al 1993;Jensen, Christensen and Hørlyck 1994;Bruijn et al 1995;Malchau et al 1995;Savilahti et al 1995;Sweetnam et al 1995). The EBRA method of assessing migration has given similar results for migration of the PCA cup (Krismer et al 1994).…”

Section: Rsa In the Assessment Of Aseptic Looseningmentioning

confidence: 96%

“…This should be compared with implant motion of 0.15 to 0.2 mm, which has been claimed to be the maximum compatible with bony ingrowth and stable long-term fixation. Several special radiological methods can detect smaller movement or mean changes in large series (Jones et al 1988(Jones et al , 1989Braud and Freeman 1990;Hardinge et al 1991;Ilchmann et al 1992;Carlsson et al 1993;Krismer et al 1994), but some are limited to measurements of the acetabular component, can measure only in one plane, and lack adequate documentation of their precision.…”

Section: Rsa In the Assessment Of Aseptic Looseningmentioning

confidence: 99%

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RSA in the assessment of aseptic loosening

Nilsson¹,

Kärrholm

1996

The Journal of Bone and Joint Surgery. British volume

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Section: Rsa In the Assessment Of Aseptic Looseningmentioning

confidence: 96%

Section: Rsa In the Assessment Of Aseptic Looseningmentioning

confidence: 99%

RSA in the assessment of aseptic loosening

Nilsson¹,

Kärrholm

1996

The Journal of Bone and Joint Surgery. British volume

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“…Radiolucency is, therefore, not a reliable indicator for cup loosening [3,16]. In contrast, progressive cup migration is a predictive indicator for the later occurrence of loosening [5,7,9].…”

Section: Introductionmentioning

confidence: 96%

Radiographic evaluation of the Duraloc cup after 4 years

Stoeckl

Brabec

Wanner

et al. 2004

International Orthopaedics (SICOT)

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We implanted 71 metal-backed, porous-coated, hemispheric, press-fit Duraloc-100 cups in 68 consecutive patients. In 61 patients, the femoral stem was a cementless Spotorno and in ten a cemented Lubinus SP II. A 28-mm Biolox ceramic head was used with both stems. After an average follow-up of 4 (3.7-5.9) years, we examined 67 hips. Radiolucencies were described in three zones according to DeLee and Charnley, and migration was measured on serial radiographs using the computerassisted EBRA method. Total migration of more than 1 mm within the first 2 years occurred in 22/62 cups. Nine cups showed more than 1.5 mm total migration within the first 2 years and more than 2 mm within the whole period. The presence of post-operative radiolucencies correlated significantly with a total migration value of more than 2 mm within the first 2 years (p=0.02). Post-operative radiolucencies in zone 1 correlated with a total migration value of more than 2 mm within the first 2 years (p=0.027) and more than 2.5 mm within the whole period (p=0.051). These correlation values might reflect the quality of operative technique, particularly reaming, and implant selection.Résumé Nous avons implanté 71 cupules métal-back hémisphérique press-fit, revêtement poreux, Duraloc-100 chez 68 malades consécutifs. Pour 61 malades la tige fémorale était une Spotorno sans ciment et,pour dix, un tige cimenté Lubinus SP II. Un tête céramique Biolox 28 mm a été utilisée avec les deux tiges. Après une moyenne de suivi de 4 ans (3.7-5.9) nous avons examiné 67 hanches. Les liserés radiologiques ont été décrits dans les trois zones de DeLee et Charnley, et la migration a été mesurée sur des radiographies sérielles en utilisant la méthode EBRA assistée par ordinateur.

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“…Progressive cup migration is a predictive indicator for later aseptic loosening [10,12,14]. The cup used in this study is a metal-backed, porous-coated, hemispherical, press-fit acetabular component [2,3,8,17,18,20].…”

Section: Introductionmentioning

confidence: 99%

Migration of the Duraloc cup after 5 years

Stihsen

Pabinger²,

Radl

et al. 2007

International Orthopaedics (SICO

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The Duraloc cup is a frequently used metalbacked, porous-coated, hemispherical, press-fit acetabular component. Published data on loosening rates are contradictory. In this study we investigated migration patterns with computer-assisted Einzel-Bild-Roentgen-Analyse (EBRA) of 67 Duraloc 100 cups. Cup migration and clinical scores were analysed over a 5-year follow-up period. Median total migration of the Duraloc 100 cup was 1.21 mm at 5 years. Seventy-five percent of implants were radiologically stable at 2 years and 90% at 4 years. One cup loosened aseptically at 60 months, requiring revision. Cup diameters ≥54 mm migrated significantly more than cups <54 mm in diameter (p=0.029 at 4 years). There was a significant correlation between high polyethylene wear and further migrating cups within the first postoperative year (p=0.035 at 12 months). Our analysis revealed significantly higher wear in males (p=0.029 at 4 years). Radiological loosening at two years could be calculated using receiver-operating characteristic curve analysis, and 1.2 mm as an adequate threshold value (sensitivity = 100%, specificity = 89%).

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A prospective study of the migration of two acetabular components

Cited by 16 publications

References 19 publications

RSA in the assessment of aseptic loosening

RSA in the assessment of aseptic loosening

Radiographic evaluation of the Duraloc cup after 4 years

Migration of the Duraloc cup after 5 years

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