title: Association of Gluteus Medius and Minimus Muscle Atrophy and Fall-Related Hip Fracture in Older Individuals Using Computed Tomography.
abstract: OBJECTIVE
  The aim of this study was to determine an association between fall-related hip and/or pelvic fractures and gluteus medius and minimus atrophy.
  
  
  METHODS
  Retrospective review of 64 patients with fall-related hip/pelvic fractures and 96 age- and sex-stratified controls was performed. Gluteus medius, gluteus minimus, tensor fascia lata, and iliopsoas atrophy was scored using a standard scale. Statistical analysis was performed.
  
  
  RESULTS
  There is a significant difference (P < 0.0001) in gluteus medius and minimus atrophy in the fracture versus control groups. Presence of gluteus atrophy was predictive of fall-related fracture (odds ratio, 2.15; 95% confidence interval, 1.08-4.31). There is no significant difference in tensor fascia lata (P = 0.47) or iliopsoas (P = 0.15) atrophy between the 2 groups. Gluteus atrophy increased with age (r = 0.41, P < 0.0001). In unilateral fractures, there is a significant difference (P = 0.0002) in ipsilateral versus contralateral gluteus medius atrophy.
  
  
  CONCLUSIONS
  Gluteus medius and minimus muscle atrophy is greater in fall-related hip/pelvic fractures, which may predispose the elderly to falls.
authors.affiliation: From the *University of Pennsylvania Perelman School of Medicine; and †Thomas Jefferson University Hospital, Philadelphia, PA.
authors.forename: Andrew S
authors.initials: AS
authors.lastname: Chi
authors.forename: Suzanne S
authors.initials: SS
authors.lastname: Long
authors.forename: Adam C
authors.initials: AC
authors.lastname: Zoga
authors.forename: Laurence
authors.initials: L
authors.lastname: Parker
authors.forename: William B
authors.initials: WB
authors.lastname: Morrison
mesh_terms: D000058:Accidental Falls / Q000706:statistics & numerical data*; D000368:Aged; D000369:Aged, 80 and over; D000375:Aging; D005260:Female; D006615:Hip / Q000000981:diagnostic imaging; D006620:Hip Fractures / Q000150:complications / Q000000981:diagnostic imaging*; D006801:Humans; D008297:Male; D008875:Middle Aged; D018482:Muscle, Skeletal / Q000000981:diagnostic imaging*; D009133:Muscular Atrophy / Q000150:complications / Q000000981:diagnostic imaging*; D010388:Pelvis / Q000293:injuries; D012189:Retrospective Studies; D014057:Tomography, X-Ray Computed