Lateral Center-Edge Angle Is Not Predictive of Acetabular Articular Cartilage Surface Area: Anatomic Variation of the Lunate Fossa

The American Journal of Sports Medicine
Thai Q TrinhAsheesh Bedi

Abstract

Surgical treatment of symptomatic femoroacetabular impingement (FAI) and dysplasia requires careful characterization of acetabular morphology. The lateral center-edge angle (LCEA) is often used to assess lateral acetabular anatomy. Previous work has questioned the LCEA as a surrogate for acetabular contact/articular cartilage surface area because of the variable morphology of the lunate fossa. We hypothesized that weightbearing articular cartilage of the acetabulum would poorly correlate with LCEA secondary to significant variation in the size of the lunate fossa. Cohort study (Diagnosis); Level of evidence, 3. Patients with 3D CT imaging undergoing either hip arthroscopy or periacetabular osteotomy for FAI or symptomatic hip instability were retrospectively identified. The LCEA and femoral head diameter were measured on an anteroposterior pelvis radiograph. Patients were grouped according to their lateral acetabular coverage as undercoverage (LCEA, <25°), normal coverage (LCEA, 25°-40°), or overcoverage (LCEA, >40°). Patients were randomly identified until each group contained 20 patients. The articular surface area was measured from preoperative 3D CT data. Linear regression analysis was performed to examine the relationship ...Continue Reading

References

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Jan 16, 2008·Clinical Orthopaedics and Related Research·Reinhold GanzWilliam H Harris
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Jun 14, 2017·Orthopaedic Journal of Sports Medicine·Chanseok RheeIvan Wong

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Citations

Sep 11, 2020·International Orthopaedics·Mario HevesiAaron J Krych
Jan 5, 2021·Clinical Orthopaedics and Related Research·Justin T SmithIra Zaltz
Jan 5, 2021·Sports Medicine and Arthroscopy Review·Christopher M LarsonAsheesh Bedi

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Methods Mentioned

BETA
bilateral hip arthroscopy

Software Mentioned

Slicer
SPSS

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