The initial instability of cemented and non-cemented femoral stems fixated with a bone grafting technique

B.W. Schreurs, H.W.J. Huiskes, T.J.J.H. Slooff

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Abstract

To reconstruct intramedullary bone stock in revision surgery of failed total hip arthroplasties, a method was developed using impacted trabecular bone grafts. In an in vitro model with femora of the goat, the initial stabilities of both cemented and non-cemented hydroxylapatite-coated stems in this graft construction were determined in a loading experiment immediately after insertion. Displacements of stems relative to bone were determined with roentgen-stereophotogrammetric analysis. The most important movements were axial rotations (cemented stems up to 2·1°, non-cemented stems up to 6·8°) and subsidence (cemented stems up to 0·5 mm, non-cemented stems up to 2·9 mm). These motions were caused predominantly by slippage and compaction of grafts. It is concluded that the cemented stems reach a better initial stability, probably by cement penetrating in the graft layer. For non-cemented stems used in combination with the grafting technique developed, additional means to guarantee initial stability are needed.
Original languageEnglish
Pages (from-to)105-110
JournalClinical Materials
Volume16
Issue number2
DOIs
Publication statusPublished - 1994

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Bone Transplantation
Thigh
Transplants
Bone and Bones
Durapatite
Reoperation
Goats
Arthroplasty
Femur
Hip

Cite this

Schreurs, B.W. ; Huiskes, H.W.J. ; Slooff, T.J.J.H. / The initial instability of cemented and non-cemented femoral stems fixated with a bone grafting technique. In: Clinical Materials. 1994 ; Vol. 16, No. 2. pp. 105-110.
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abstract = "To reconstruct intramedullary bone stock in revision surgery of failed total hip arthroplasties, a method was developed using impacted trabecular bone grafts. In an in vitro model with femora of the goat, the initial stabilities of both cemented and non-cemented hydroxylapatite-coated stems in this graft construction were determined in a loading experiment immediately after insertion. Displacements of stems relative to bone were determined with roentgen-stereophotogrammetric analysis. The most important movements were axial rotations (cemented stems up to 2·1°, non-cemented stems up to 6·8°) and subsidence (cemented stems up to 0·5 mm, non-cemented stems up to 2·9 mm). These motions were caused predominantly by slippage and compaction of grafts. It is concluded that the cemented stems reach a better initial stability, probably by cement penetrating in the graft layer. For non-cemented stems used in combination with the grafting technique developed, additional means to guarantee initial stability are needed.",
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The initial instability of cemented and non-cemented femoral stems fixated with a bone grafting technique. / Schreurs, B.W.; Huiskes, H.W.J.; Slooff, T.J.J.H.

In: Clinical Materials, Vol. 16, No. 2, 1994, p. 105-110.

Research output: Contribution to journalArticleAcademicpeer-review

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AU - Schreurs, B.W.

AU - Huiskes, H.W.J.

AU - Slooff, T.J.J.H.

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AB - To reconstruct intramedullary bone stock in revision surgery of failed total hip arthroplasties, a method was developed using impacted trabecular bone grafts. In an in vitro model with femora of the goat, the initial stabilities of both cemented and non-cemented hydroxylapatite-coated stems in this graft construction were determined in a loading experiment immediately after insertion. Displacements of stems relative to bone were determined with roentgen-stereophotogrammetric analysis. The most important movements were axial rotations (cemented stems up to 2·1°, non-cemented stems up to 6·8°) and subsidence (cemented stems up to 0·5 mm, non-cemented stems up to 2·9 mm). These motions were caused predominantly by slippage and compaction of grafts. It is concluded that the cemented stems reach a better initial stability, probably by cement penetrating in the graft layer. For non-cemented stems used in combination with the grafting technique developed, additional means to guarantee initial stability are needed.

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