Migration of the acetabular component after revision with impacted morselized allografts: a radiostereometric 2-year follow-up analysis of 21 cases

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Migration of the acetabular component after revision with impacted morselized allografts: a radiostereometric 2-year follow-up analysis of 21 cases. / Ornstein, Ewald; Franzen, Herbert; Johnsson, Ragnar; Sandquist, Per; Stefansdottir, Anna; Sundberg, Martin.

In: Acta Orthopaedica Scandinavica, Vol. 70, No. 4, 1999, p. 338-342.

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T1 - Migration of the acetabular component after revision with impacted morselized allografts: a radiostereometric 2-year follow-up analysis of 21 cases

AU - Ornstein, Ewald

AU - Franzen, Herbert

AU - Johnsson, Ragnar

AU - Sandquist, Per

AU - Stefansdottir, Anna

AU - Sundberg, Martin

PY - 1999

Y1 - 1999

N2 - In a consecutive series of hip revisions due to mechanical loosening, using impacted morselized allografts and cement, we followed 21 acetabular components by radiostereometric analysis (RSA) during 2 years. All but 1 acetabular component migrated in the proximal direction (median 2.1 (0.5-6.4) mm). 6 components migrated in the medial direction (median 0.8 (0.4-1.2) mm) and 6 in the lateral (median 0.8 (0.4-2.0) mm). 14 components migrated in the posterior direction (median 0.8 (0.3-2.3) mm) and 1 in the anterior 0.6 mm. The migration rate gradually decreased in all directions, but 7 acetabular components still migrated in at least 1 direction (median 0.3-0.6 mm) between 1.5 and 2 years postoperatively.

AB - In a consecutive series of hip revisions due to mechanical loosening, using impacted morselized allografts and cement, we followed 21 acetabular components by radiostereometric analysis (RSA) during 2 years. All but 1 acetabular component migrated in the proximal direction (median 2.1 (0.5-6.4) mm). 6 components migrated in the medial direction (median 0.8 (0.4-1.2) mm) and 6 in the lateral (median 0.8 (0.4-2.0) mm). 14 components migrated in the posterior direction (median 0.8 (0.3-2.3) mm) and 1 in the anterior 0.6 mm. The migration rate gradually decreased in all directions, but 7 acetabular components still migrated in at least 1 direction (median 0.3-0.6 mm) between 1.5 and 2 years postoperatively.

U2 - 10.3109/17453679908997821

DO - 10.3109/17453679908997821

M3 - Article

VL - 70

SP - 338

EP - 342

JO - Acta Orthopaedica

JF - Acta Orthopaedica

SN - 1745-3682

IS - 4

ER -