Knee Osteonecrosis
Fig. 55.1 Anteroposterior radiograph of the knee demonstrating a radiolucent (osteonecrosis) lesion (orange circle) of the medial femoral condyle with collapse of the weight bearing portion Figs. 55.2 and 55.3…
Alumina Ceramic-on-Highly Cross-Linked Polyethylene Bearing in Cementless Total Hip Arthroplasty in Young Patients with Osteonecrosis of Femoral Head
Fig. 50.1 Radiographic and computed tomographic evaluation of osteolysis of left hip of a 46-year-old man with osteonecrosis of femoral head. (a) An anteroposterior view of left hip before the…
Osteonecrosis and Intravascular Coagulation Revisited
Citation Observation Types of patients Bonfiglio [10] Thrombosed arteries Dysbaric osteonecrosis Ficat and Arlet [1] Arteriolar thromboses Etiology not noted Spencer and Brookes [11] Thrombus observed in multiple intraosseous vessels…
Natural Course and the JIC Classification of Osteonecrosis of the Femoral Head
1. Collapse of the femoral head without joint-space narrowing or acetabular abnormality on x-rays (including crescent sign) 2. Demarcating sclerosis in the femoral head without joint-space narrowing or acetabular abnormality…
Accumulation of Necrotic Fatty Marrow in Osteonecrotic Hips Mimicking Septic Arthritis
Fig. 22.1 An intraoperative photograph shows the pus-like (yellowish and turbid) joint fluid gushed from the hip joint (Reprint permission for Springer-Verlag) 22.5 Erroneous Leukocytosis of Joint Fluid by Automated…
The ARCO Staging System: Generation and Evolution Since 1991
Fig. 28.1 ARCO international classification of osteonecrosis Stage 0: All diagnostic studies are normal and diagnosis is made by histology only. A painful hip in a patient who has either…
Modified Kerboul Classification System of Necrotic Extent Using MRI
Fig. 27.1 A is the angle of necrotic area in mid-coronal image and B is the angle of necrotic area in midsagittal image. The angle is measured at the subchondral…
The University of Pennsylvania Classification of Osteonecrosis
Stage Criteria 0 Normal or nondiagnostic radiograph, bone scan, and MRI I Normal radiograph; abnormal bone scan and/or MRI A – Mild (<15 % of head affected) B – Moderate…
Glucocorticoids (as an Etiologic Factor)
System Adverse effects Metabolic/endocrine Weight gain/obesity, fluid retention/edema, hypokalemia, diabetes mellitus/insulin resistance, adrenal insufficiency, amenorrhea Dermatologic Skin thinning, purpura, Cushingoid appearance, acne, hirsutism Ophthalmologic Posterior subcapsular cataract, glaucoma, central serous…
Genetic Studies in Osteonecrosis of the Femoral Head
Fig. 9.1 Common pathway of developing osteonecrosis of the femoral head 9.2 Methods of Genetic Study Various genetic studies had been developed and changed rapidly to identify disease-associated loci or…
