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Updated: Feb 5, 2026
The Use of Mixed Reality in Custom-Made Revision Hip Arthroplasty: A First Case Report
Published on: August 4, 2022
Reconstructing Pelvic Discontinuity and Severe Acetabular Bone Loss in Revision Hip Arthroplasty with a Massive
Stephen R Rossman1, Edward Y Cheng1
1Department of Orthopaedic Surgery, University of Minnesota, Minneapolis, Minnesota.
Introduction:
The use of a massive allograft along with an antiprotrusio cage for the treatment of large periprosthetic acetabular defects can restore structural integrity to the pelvis and provide durable revision-free survival.
Step 1 Expose The Acetabulum Video 1 And Figs 1-A And 1-B:
Perform an extensile approach to the acetabulum.
Step 2 Remove The Existing Acetabular Component Video 1 And Figs 2-A And 2-B:
Ensure that the appropriate tools are available for removal of the existing acetabular component.
Step 3 Prepare The Acetabulum Fig 3:
It is important to remove fibrous tissue around the acetabulum to get to healthy bleeding bone.
Step 4 Prepare The Bulk Allograft Video 2 And Figs 4-A 4-B And 4-C:
It is important to remove all of the native cartilage from the graft to allow for osseous ingrowth potential.
Step 5 Place The Bulk Allograft Into The Acetabular Defect And Fill Excess Space With Allograft Chips:
Ensure that the graft properly fits within the acetabular defect.
Step 6 Secure The Graft To The Acetabulum And Ream The Allograft:
It is important to stabilize the bulk allograft to the pelvis before reaming.
Step 7 Implant The Cage Video 4 And Figs 9-A 9-B And 9-C:
Impact the cage implant into position and secure it to the pelvis with as many screws as necessary to obtain a secure implant.
Step 8 Cement The Polyethylene Cup And Perform Trial Reduction Of The Hip:
Cement the polyethylene cup in the proper orientation and reduce the hip.
Results:
We reviewed 72 cage constructs in 68 patients at a mean follow-up of 5.1 years (range, 1.2 to 10.7 years)3.
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