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.
Etiology
- 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
Imaging
- Visual inspection and recognition are generally sufficient
- Fluoroscopy or regular radiographs may further define the extent of the fracture patterns
