Three-dimensional analysis of age and sex differences in femoral head asphericity in asymptomatic hips in the United States  

作　　者：Mahad M Hassan Aliya G Feroe Brenton W Douglass Andrew E Jimenez Benjamin Kuhns Charles F Mitchell Robert L Parisien Daniel A Maranho Eduardo N Novais Young-Jo Kim Ata M Kiapour 

机构地区：[1]Department of Orthopedic Surgery,University of Minnesota,Minneapolis,MN 55454,United States [2]Department of Orthopedic Surgery,TRIA Orthopaedic Center,Bloomington,MN 55122,United States [3]Department of Orthopedic Surgery,Boston Children’s Hospital,Boston,MA 02115,United States [4]Department of Orthopedic Surgery,Mayo Clinic,Rochester,MN 55901,United States [5]Department of Orthopaedics and Rehabilitation,Yale School of Medicine,New Haven,CT 06510,United States [6]Department of Orthopedic Surgery,American Hip Institute Research Foundation,Des Plaines,IL 60018,United States [7]Department of Orthopedic Surgery,Mount Sinai,New York,NY 10029,United States [8]Department of Biomechanics,Medicine,and Rehabilitation of the Locomotor System,Ribeirao Preto Medical School,University of São Paulo,Ribeirao Preto 14048-900,São Paulo,Brazil

出　　处：《World Journal of Orthopedics》2024年第8期754-763,共10页世界骨科杂志（英文版）

摘　　要：BACKGROUND The sphericity of the femoral head is a metric used to evaluate hip pathologies and is associated with the development of osteoarthritis and femoral-acetabular impingement.AIM To analyze the three-dimensional asphericity of the femoral head of asymptomatic pediatric hips.We hypothesized that femoral head asphericity will vary significantly between male and female pediatric hips and increase with age in both sexes.METHODS Computed tomography scans were obtained on 158 children and adolescents from a single institution in the United States(8-18 years;50%male)without hip pain.Proximal femoral measurements including the femoral head diameter,femoral head volume,residual volume,asphericity index,and local diameter difference were used to evaluate femoral head sphericity.RESULTS In both sexes,the residual volume increased by age(P<0.05).Despite significantly smaller femoral head size in older ages(>13 years)in females,there were no sex-differences in residual volume and aspherity index.There were no age-related changes in mean diameter difference in both sexes(P=0.07)with no significant sex-differences across different age groups(P=0.06).In contrast,there were significant increases in local aspherity(maximum diameter difference)across whole surface of the femoral head and all quadrants except the inferior regions in males(P=0.03).There were no sex-differences in maximum diameter difference at any regions and age group(P>0.05).Increased alpha angle was only correlated to increased mean diameter difference across overall surface of the femoral head(P=0.024).CONCLUSION There is a substantial localized asphericity in asymptomatic hips which increases with age in.While 2D measured alpha angle can capture overall asphericity of the femoral head,it may not be sensitive enough to represent regional asphericity patterns.

关 键 词：HIP Femoral head SPHERICITY Skeletal growth Sex differences 

分 类 号：R684[医药卫生—骨科学]