Femoral neck geometry and radiographic signs of osteoporosis as predictors of hip fracture

K M Karlsson, Ingemar Sernbo, Karl Obrant, Inga Redlund-Johnell, Olof Johnell

Research output: Contribution to journalArticlepeer-review

Abstract

A total of 125 consecutive hip fracture patients were investigated regarding hip geometry. There were 33 men of mean age 76 +/- 10 years, and 92 women of mean age 78 +/- 9 years. Patients with previous hip surgery were excluded. Hip geometry (hip-axis length, width of collum femoris, and femoral shaft and neck-shaft angle) were registered on both plain radiographs and DEXA scans performed within 2 weeks after fracture. On the radiographs, the calcar femorale, the Singh index, and the femoral neck index (FNI) were also calculated and compared with earlier published values of bone mineral density hip in the hip fracture patients. The fracture cases were compared with controls, 192 DEXA scans and 163 radiographs, in patients without hip surgery or known hip disease. As measured on the DEXA scans we found a wider collum femoris and a wider femoral shaft in both the male and female fracture cases, compared to controls. Also, the fracture cases showed signs of osteoporosis as measured by the calcar femorale, the Singh index, and the femoral neck index. These measurements showed good correlation with bone mineral density of the hip as measured by the DEXA scans.
Original languageEnglish
Pages (from-to)327-330
Number of pages4
JournalBone
Volume18
Issue number4
DOIs
Publication statusPublished - 1996

Subject classification (UKÄ)

  • Orthopedics

Keywords

  • Femoral neck
  • Hip fracture
  • Radiographs
  • Dual energy X-ray absorptiometry (DEXA)
  • Geometry
  • Osteoporosis

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