Use of Magnetic Resonance Imaging in the Diagnosis of an Occult Fracture of the Femoral Component After Total Hip Arthroplasty

Autor: Scott M. Cook, Hollis G. Potter, Paul M. Pellicci
Rok vydání: 2004
Předmět:
Zdroj: The Journal of Bone and Joint Surgery-American Volume. 86:149-153
ISSN: 0021-9355
DOI: 10.2106/00004623-200401000-00024
Popis: Fractures of the femoral component in total hip arthroplasty have been extensively reported1-9. Although some patients with such a fracture have acute symptoms and obvious radiographic findings, we have occasionally seen patients after total hip arthroplasty who have thigh pain and normal radiographic findings. The patient is often vague with regard to the time of the onset and the provocation of the thigh pain. After a period of time, a fracture of the femoral component can be seen on plain radiographs. To the best of our knowledge, the case of our patient is unique because, when we suspected a possible fracture of the femoral component as the cause of the thigh pain, we used magnetic resonance imaging to evaluate the integrity of the stem and found an occult fracture of the femoral component. Our patient was informed that data concerning the case would be submitted for publication. Asixty-two-year-old man presented with a two-week history of intermittent pain in the right hip that occurred primarily with weight-bearing. Ten years previously, he had undergone a right total hip arthroplasty with use of a collarless, normalized, cast cobalt-chromium stem (Osteonics, Allendale, New Jersey) that had been inserted with cement. At the time of the surgery, he was 170 cm tall and weighed 100 kg. To accommodate the dimensions of the femoral canal, one of the smaller stem sizes (number 5) had been used with a 28-mm-diameter head with a +10-mm neck length. The postoperative course had been uncomplicated, and he was satisfied with the result until the pain developed in the thigh. He reported no known inciting trauma and first noted the pain after walking eighteen holes of golf. On physical examination, the patient walked with a mild limp. Pain could not be elicited when the limb was moved …
Databáze: OpenAIRE