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Surgical Approach Determines Pseudotumor and Muscle Atrophy Patterns in MoM Hip Resurfacing
September 2025
Surgical Approach Determines Pseudotumor and Muscle Atrophy Patterns in MoM Hip Resurfacing
Study Type:Therapy
OE Level Evidence:1
Journal Level of Evidence:1
The anatomical location of cystic pseudotumors and muscle atrophy in metal-on-metal resurfacing hip arthroplasty is related to the surgical approach used for implantation. A subgroup analyses of a randomized controlled trial.
Arch Orthop Trauma Surg . 2023 Sep;143(9):5967-5976.Synopsis
Forty-nine patients with hip osteoarthritis were randomized to receive MoM resurfacing via an anterolateral approach (n=25) or a posterior approach (n=24). The primary outcome of interest was the anatomical location, grade, and prevalence of pseudotumors and muscle atrophy on MARS-MRI. Secondary outcomes of interest included acetabular component position (inclination/anteversion), femoral neck nar...
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