Preparation of morselised bone for impaction grafting using a blender method

Area of Science:

• Orthopedic surgery
• Biomaterials engineering
• Surgical techniques

Background:

• Impaction bone grafting restores bone stock in revision total hip surgery.
• Current methods for morselised bone (MB) production are costly and inefficient.
• Existing techniques yield limited particle size variety and low throughput.

Purpose of the Study:

• To evaluate a domestic blender as a novel method for producing morselised bone (MB).
• To assess the particle size distribution, morphology, and mechanical properties of blender-produced MB.
• To compare the performance of blender-produced MB with manually prepared grafts.

Main Methods:

• Utilized a domestic blender to process bone for grafting.
• Employed packing modeling to analyze graft porosity and stiffness.
• Conducted mechanical testing, including impaction and subsidence tests.
• Performed scanning electron imaging to assess trabecular structure.

Main Results:

• The blender method produced a wide range of particle sizes without system adjustment.
• Blender-derived MB exhibited reduced initial graft porosity and increased stiffness.
• Mechanical testing confirmed superior impaction and subsidence resistance compared to manual methods.
• Scanning electron imaging verified preservation of trabecular structure for revascularization.

Conclusions:

• Domestic blender offers a rapid, cost-effective method for producing morselised bone (MB).
• Blender-produced MB demonstrates favorable particle size distribution, morphology, and mechanical properties.
• This technique enhances graft stiffness and stability, crucial for revision hip arthroplasty.