title: A Unique Pattern of Peri-Prosthetic Fracture Following Total Knee Arthroplasty: The Insufficiency Fracture.
abstract: An isolated periprosthetic compression fracture following total knee arthroplasty has not been described in periprosthetic fracture classifications. Thus, the purpose is to describe this unique type of fracture based on clinical and radiographic analysis and identify the incidence and potential risk factors of this fracture. A retrospective chart review was performed from a database of 5864 primary total knee. A total of 56 (0.9%) periprosthetic fractures were identified with 15 (26.8%) of them demonstrating an isolated lateral compression fracture. Patients exhibiting this fracture pattern had a mean preoperative varus deformity of 176.3° and had poor bone quality (T score: -2.1). It is important to recognize that a compression fracture is not an infrequent finding and that further workup maybe warranted when clinical suspicion is high.
authors: American Hospital Dubai Department of Orthopaedic Surgery, Dubai, United Arab Emirates.
authors: Alisina
authors: A
authors: Shahi
authors: American Hospital Dubai Department of Orthopaedic Surgery, Dubai, United Arab Emirates.
authors: Usama Hassan
authors: UH
authors: Saleh
authors: UCLA School of Medicine, Los Angeles, California.
authors: Timothy L
authors: TL
authors: Tan
authors: American Hospital Dubai Department of Orthopaedic Surgery, Dubai, United Arab Emirates.
authors: Mohamed
authors: M
authors: Elfekky
authors: American Hospital Dubai Department of Orthopaedic Surgery, Dubai, United Arab Emirates.
authors: Samih
authors: S
authors: Tarabichi
mesh_terms: D000368:Aged; D019645:Arthroplasty, Replacement, Knee / Q000009:adverse effects*; D016208:Databases, Factual; D003720:Densitometry; D005260:Female; D005264:Femoral Fractures / Q000000981:diagnostic imaging* / Q000209:etiology*; D015775:Fractures, Stress / Q000209:etiology*; D006801:Humans; D015994:Incidence; D007592:Joint Diseases / Q000601:surgery*; D007719:Knee Joint / Q000601:surgery; D008297:Male; D008875:Middle Aged; D057068:Periprosthetic Fractures / Q000601:surgery; D011475:Prosthesis Failure; D011859:Radiography; D012189:Retrospective Studies; D012307:Risk Factors; D016896:Treatment Outcome
keywords: arthroplasty; insufficiency fracture; joint replacement; knee; periprosthetic fractures