An increase in cranial acetabular version with age: implications for femoroacetabular impingement.
This cadaveric study aimed to determine if acetabular retroversion demonstrates predictable changes with age that could inform understanding of factors that may contribute to the pathophysiology of femoroacetabular impingement. Two-hundred forty pelves were divided into young and old groups. Version was measured at the cranial (5mm below superior rim), central (transverse of acetabulum), and caudal (5mm above inferior rim) locations. The data showed a significant difference between young (10±10°) and old (13±9°) cranial version (P=.02). Cranial retroversion increases with age and may reflect a developmental component in the etiology of the focal rim impingement lesion or ossification of the damaged labrum. Global acetabular retroversion does not appear to change with age and may reflect a congenital etiology.
University of Michigan Medical School, Ann Arbor, Michigan.
Nathan J
NJ
Kopydlowski
MedSport, Department of Orthopedic Surgery, University of Michigan, Ann Arbor, Michigan.
Eric P
EP
Tannenbaum
MedSport, Department of Orthopedic Surgery, University of Michigan, Ann Arbor, Michigan.
Asheesh
A
Bedi
Department of Orthopaedic Surgery, Washington University in St. Louis, Chesterfield, Missouri.
Matthew V
MV
Smith
MedSport, Department of Orthopedic Surgery, University of Michigan, Ann Arbor, Michigan.
Jon K
JK
Sekiya
D000077:Acetabulum / Q000473:pathology*; D000293:Adolescent; D000328:Adult; D000375:Aging / Q000473:pathology*; D018771:Arthralgia / Q000473:pathology / Q000503:physiopathology; D053587:Arthrometry, Articular; D002102:Cadaver; D018450:Disease Progression; D005260:Female; D057925:Femoracetabular Impingement / Q000473:pathology* / Q000503:physiopathology; D005270:Femur Head / Q000473:pathology*; D006621:Hip Joint / Q000473:pathology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D015207:Osteoarthritis, Hip / Q000473:pathology / Q000503:physiopathology; D010384:Pelvic Bones / Q000473:pathology; D044469:Racial Groups; D012447:Sacrum / Q000473:pathology; D055815:Young Adult
acetabular retroversion; femoroacetabular impingement; hip impingement; hip pain; pincer impingement