Total Hip Arthroplasty Dislocations Are More Complex Than They Appear: A Case Report of Intraprosthetic Dislocation of an Anatomic Dual-Mobility Implant After Closed Reduction.
BACKGROUND
Total hip arthroplasty is a successful operation for the treatment of hip pain. One of the common complications of hip arthroplasty is dislocation. While reduction of standard prosthetic dislocations is highly successful, new prostheses add the potential for new complications.


METHODS
We present the case of a patient who experienced intraprosthetic dislocation of an anatomic dual-mobility total hip prosthesis after a closed hip reduction and include the prereduction and postreduction radiographic findings.


CONCLUSIONS
Emergency department physicians should be aware of intraprosthetic dislocation. This complication can be easily missed because the metal/ceramic femoral head appears to be reduced in the acetabulum.
Department of Adult Reconstruction and Joint Replacement, Hospital for Special Surgery, New York, NY.
Bradford S
BS
Waddell
Department of Adult Reconstruction and Joint Replacement, Hospital for Special Surgery, New York, NY.
Ivan
I
De Martino
Department of Adult Reconstruction and Joint Replacement, Hospital for Special Surgery, New York, NY.
Thomas
T
Sculco
Department of Adult Reconstruction and Joint Replacement, Hospital for Special Surgery, New York, NY.
Peter
P
Sculco
Arthroplasty–replacement–hip; hip dislocation; hip prosthesis