Neurovascular injury during primary total hip arthroplasty caused by a threaded acetabulum cup.

We report an iatrogenic neurovascular injury during hip arthroplasty surgery. During insertion of a threaded titanium cup into a dysplastic acetabulum (lack of anterior wall), both the common femoral artery and nerve were crushed. It is therefore recommended that, if the soft tissues are exposed and can interfere with the instruments, inserts that require rotation should not be selected to be placed in the acetabulum. To the best of our knowledge, such a mechanism of injury has never been reported.