Authors of section


Derek Donegan, Michael Huo, Michael Leslie

Executive editor

Michael Baumgaertner

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Intraoperative acetabular fracture during insertion with stable component

General considerations

These fractures are nondisplaced, with a stable cup.

They are classified as Della Valle IA.

Della Valle IA acetabular fracture occurs intraoperatively during hip arthroplasty.

Further information about Della Valle classification can be found in the publication: Della Valle CJ, Momberger NG, Paprosky WG. Periprosthetic fractures of the acetabulum associated with a total hip arthroplasty. Instr Course Lect. 2003;52:281–290.

Della Valle IA acetabular fracture


  • Excessive or eccentric reaming leading to reduction of bone strength
  • Mismatch of cup size to the reaming preparation
  • Eccentric cup insertion leading to stress of the walls/columns

Clinical signs

  • Visible fracture line


  • Visual inspection and recognition are generally sufficient
  • Fluoroscopy or regular radiographs may further define the extent of the fracture patterns
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