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The Bone & Joint Journal
Vol. 105-B, Issue 6 | Pages 590 - 592
1 Jun 2023
Manktelow ARJ Mitchell P Haddad FS

Cite this article: Bone Joint J 2023;105-B(6):590–592.


The Journal of Bone & Joint Surgery British Volume
Vol. 86-B, Issue 5 | Pages 771 - 776
1 Jul 2004
Frei H Mitchell P Masri BA Duncan CP Oxland TR

We studied various aspects of graft impaction and penetration of cement in an experimental model. Cancellous bone was removed proximally and local diaphyseal lytic defects were simulated in six human cadaver femora. After impaction grafting the specimens were sectioned and prepared for histomorphometric analysis.

The porosity of the graft was lowest in Gruen zone 4 (52%) and highest in Gruen zone 1 (76%). At the levels of Gruen zones 6 and 2 the entire cross-section was almost filled with cement. Cement sometimes reached the endosteal surface in other Gruen zones. The mean peak impaction forces exerted with the impactors were negatively correlated with the porosity of the graft.