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Updated: May 2, 2026

Establishment of a Segmental Femoral Critical-size Defect Model in Mice Stabilized by Plate Osteosynthesis

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Two-stage Acetabular Impaction Bone Grafting: A Case Report.

V Selvaratnam¹, V J Leong¹, S Gunainthran²

¹National Orthopaedic Centre of Excellence for Research and Learning (NOCERAL), Department of Orthopaedic Surgery, Universiti Malaya, Kuala Lumpur, Malaysia.

Malaysian Orthopaedic Journal

|August 25, 2025

Summary

This summary is machine-generated.

Revision hip replacement bone grafting can be done in two stages. This study shows that acetabular loading may not be necessary for bone graft integration in revision Total Hip Arthroplasty (THA).

Keywords:

acetabular impaction bone grafting (AIBG)irradiated femoral head allografts two-stage AIBG

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Last Updated: May 2, 2026

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Area of Science:

Orthopedic Surgery
Biomaterials Science

Background:

Revision Total Hip Arthroplasty (THA) presents challenges in restoring bone stock and hip biomechanics.
Acetabular impaction bone grafting (AIBG) is a technique used to address bone loss.
Traditionally, AIBG is performed in a single stage with component implantation, assuming graft loading is essential for integration.

Observation:

A 73-year-old male with aseptic loosening and acetabular protrusion underwent a two-stage AIBG using irradiated femoral head allografts.
The initial stage of the AIBG was performed without acetabular loading.

Findings:

The irradiated femoral head allograft successfully integrated with the host bone despite the absence of acetabular loading during the first stage.
This case is the first to demonstrate successful allograft integration in a two-stage AIBG without immediate acetabular loading.

Implications:

The findings suggest that acetabular loading may not be a prerequisite for allograft integration in AIBG.
This supports the potential for performing AIBG as a two-stage procedure in complex revision hip surgeries, particularly in patients with compromised bone stock.
This approach may offer greater flexibility in managing challenging revision THA cases.