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 

作者机构：Department of Orthopedic SurgeryUniversity of MinnesotaMinneapolisMN 55454United States Department of Orthopedic SurgeryTRIA Orthopaedic CenterBloomingtonMN 55122United States Department of Orthopedic SurgeryBoston Children’s HospitalBostonMA 02115United States Department of Orthopedic SurgeryMayo ClinicRochesterMN 55901United States Department of Orthopaedics and RehabilitationYale School of MedicineNew HavenCT 06510United States Department of Orthopedic SurgeryAmerican Hip Institute Research FoundationDes PlainesIL 60018United States Department of Orthopedic SurgeryMount SinaiNew YorkNY 10029United States Department of BiomechanicsMedicineand Rehabilitation of the Locomotor SystemRibeirao Preto Medical SchoolUniversity of São PauloRibeirao Preto 14048-900São PauloBrazil 

出 版 物：《World Journal of Orthopedics》 (世界骨科杂志（英文版）)

年 卷 期：2024年第15卷第8期

页      面：754-763页

学科分类：1002[医学-临床医学] 100210[医学-外科学(含：普外、骨外、泌尿外、胸心外、神外、整形、烧伤、野战外)] 10[医学] 

主　　题：Hip Femoral head Sphericity Skeletal growth Sex differences 

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 *** To analyze the three-dimensional asphericity of the femoral head of asymptomatic pediatric *** hypothesized that femoral head asphericity will vary significantly between male and female pediatric hips and increase with age in both *** 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 *** femoral measurements including the femoral head diameter,femoral head volume,residual volume,asphericity index,and local diameter difference were used to evaluate femoral head *** In both sexes,the residual volume increased by age(P13 years)in females,there were no sex-differences in residual volume and aspherity *** 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(P0.05).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 *** 2D measured alpha angle can capture overall asphericity of the femoral head,it may not be sensitive enough to represent regional asphericity patterns.