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Updated: May 8, 2026

In Vivo Quantification of Hip Arthrokinematics during Dynamic Weight-bearing Activities using Dual Fluoroscopy
Published on: July 2, 2021
Hip anatomic variants that may mimic abnormalities at MRI: labral variants
Mike S Nguyen1, Valeriy Kheyfits, Brian D Giordano
1Department of Imaging Sciences, University of Rochester Medical Center, 601 Elmwood Ave, Box 648, Rochester, NY 14642, USA.
Anatomic variants of the acetabular labrum can mimic hip abnormalities on MRI. Radiologists must distinguish these normal variants from actual labral tears to ensure accurate diagnosis.
Area of Science:
- Radiology
- Orthopedic Imaging
- Anatomy
Background:
- Acetabular labral variants are common findings on hip MRI.
- These variants can be mistaken for pathological conditions, potentially leading to misdiagnosis.
Purpose of the Study:
- To highlight normal anatomic variants of the acetabular labrum.
- To educate radiologists on differentiating these variants from labral tears.
Main Methods:
- Review of MR images of the hip.
- Identification and characterization of common acetabular labral variants.
Main Results:
- Normal variants include labral variants, sublabral sulci, and perilabral sulcus.
- These variants can closely resemble true labral tears on MRI.
Conclusions:
- The hip exhibits numerous anatomic variants that can mimic abnormalities on MRI.
- Distinguishing labral variants from tears is crucial for accurate hip MRI interpretation.
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