Halberd pelvis

Dr Daniel J Bell et al.

A halberd pelvis refers to a pathognomonic appearance of the pelvis seen in metatropic dysplasia, a rare form of spondyloepimetaphyseal dysplasia.

  • hypoplastic ilia with narrow sacrosciatic notches
  • horizontal acetabular roofs with small associated notches superior to their lateral borders
  • prominent flaring of crescentic iliac wings

History and etymology

The appearance is thought to resemble a halberd, a two-handed pole weapon that was in popular use in central Europe from the 14th to 16th centuries. The halberd comprises an almost 2 meter long shaft, ending in a lengthened spiked head. Before the spike is the blade of an ax, with an opposed hook-like pick. It remains the ceremonial weapon of the Swiss Guard in the Vatican, the pope's bodyguard 1,2.

Inspired signs

Article information

rID: 70527
Section: Signs
Tag: cases
Synonyms or Alternate Spellings:
  • Halberd-shaped pelvis
  • Halberd shaped pelvis

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Cases and figures

  • Figure 1: photo - halberd
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