Question 3101
{"accessible":false,"alternatives":[{"id":15045,"text":"dislocation"},{"id":15046,"text":"fat embolus"},{"id":15047,"text":"loosening"},{"id":15048,"text":"peri-prosthetic fracture"},{"id":15049,"text":"protrusio femori\r\n"}],"archived":false,"correctAlternativeId":15049,"explanation":"\u003cp\u003eProtrusio acetabuli does occur; this is the migration of the femoral head towards the pelvis, medial to the ischial line. The other options are recognized complications of hip replacements. Loosening would be radiolucency around the joint prosthesis.\u0026nbsp;Peri-prosthetic fractures would be more of a sudden process. It will be a sharp radiolucent line across or communicating with the prosthesis. Fat emboli can happen as a result of fat particles, typically after lower extremity fracture, being introduced into the blood stream and eventually occlude the pulmonary circulation. Dislocations can occur and would involve the head of the femur no longer articulating with the acetabulum.\u003c/p\u003e","id":3101,"imageUrl":null,"imageAttribution":null,"imageAttributionCaseInfo":null,"firstQuestionPath":"/questions/3101","nextQuestionPath":"/articles/aseptic-loosening-of-hip-joint-replacements/questions/3023","relatedArticles":[{"id":29197,"title":"Hip dislocation","link":"/articles/hip-dislocation?lang=us"},{"id":11123,"title":"Fat embolism syndrome","link":"/articles/fat-embolism-syndrome?lang=us"},{"id":12136,"title":"Acetabular protrusion","link":"/articles/acetabular-protrusion-1?lang=us"},{"id":83525,"title":"Hip arthroplasty (overview)","link":"/articles/hip-arthroplasty-overview?lang=us"}],"alsoUsedIn":[{"id":2193,"kind":"Course","title":"2024 Virtual Conference Private Use - page 2193","link":"https://radiopaedia.org/courses/2024-virtual-conference-private-use/pages/2193"}],"stem":"\u003cp\u003eComplications of hip replacements include all of these except:\u003c/p\u003e","menuLinks":[{"text":"Report problem with question","url":"https://docs.google.com/forms/d/e/1FAIpQLSfO3soWYhOjJ7yErSysyCe5V4A1CqW7WK3rDA7MtAkecMGqNw/viewform?entry.1624461248\u0026entry.553583435=https://radiopaedia.org/questions/3101"}],"attemptsPercentages":[{"alternativeId":"15049","percentage":80},{"alternativeId":"15047","percentage":20},{"alternativeId":"15045","percentage":0},{"alternativeId":"15046","percentage":0},{"alternativeId":"15048","percentage":0}],"promptToLogin":false,"questionManager":false,"articleId":"aseptic-loosening-of-hip-joint-replacements"}