99 results found
Article
Abdominal wall injury
Abdominal wall injuries comprise a set of injuries of the abdominal wall and include different forms of muscle injuries, traumatic hernias and injuries to the subcutaneous tissue. They are often overshadowed by the attention to associated “more severe” abdominal visceral injuries.
Epidemiology...
Article
Acetabular fracture
Acetabular fractures are a type of pelvic fracture, which may also involve the ilium, ischium or pubis depending on fracture configuration.
Epidemiology
Acetabular fractures are uncommon. The reported incidence is approximately 3 per 100,000 per year. This study reported a 63% to 37% male to f...
Article
Acetabular sector angle
The acetabular sector angles are a set of angles, comprising the anterior acetabular sector angle (AASA), the posterior acetabular sector angle (PASA) and horizontal acetabular sector angle (HASA) and are used on cross-sectional imaging, especially pelvic CT, for the evaluation of acetabular cov...
Article
Acetabular version angle
The acetabular version angle or acetabular anteversion angle is a measurement used on cross-sectional imaging especially pelvic CT for the assessment of acetabular morphology.
Usage
The acetabular version angle is influenced by pelvic obliquity and pelvic tilt, which might lead to measurement ...
Article
Achondroplasia
Achondroplasia is a congenital genetic disorder resulting in rhizomelic dwarfism and is the most common skeletal dysplasia. It has numerous distinctive radiographic features.
Epidemiology
It occurs due to sporadic mutations in the majority of cases but can be inherited as an autosomal dominan...
Article
Aggressive angiomyxoma
Aggressive angiomyxomas are rare tumors that arise in the pelvis and typically cross the levator ani muscles. Despite its name, it is essentially a benign tumor and the term "aggressive" is due to a predilection for local recurrence. Only rarely does it metastasize.
Epidemiology
It is seen pre...
Article
Aneurysmal bone cyst
Aneurysmal bone cysts (ABC) are benign expansile osteoclastic giant cell-rich bony neoplasms, composed of numerous blood-filled channels and cystic spaces 1.
ABC accounts for the 'A' in the popular mnemonic for lucent bone lesions FEGNOMASHIC.
Terminology
The terms 'giant cell reparative gran...
Article
Ankylosing spondylitis
Ankylosing spondylitis (less commonly known as Bechterew disease or Marie-Strümpell disease) is a seronegative spondyloarthropathy, which results in fusion (ankylosis) of the spine and sacroiliac (SI) joints, although involvement is also seen in large and small joints.
Epidemiology
Traditional...
Case
Anterior superior iliac spine avulsion
Published
17 Jul 2015
100% complete
X-ray
Case
Anteroposterior compression II injury
Published
18 Apr 2023
69% complete
Diagram
X-ray
Case
Bilateral iliac bone stress fractures
Published
29 May 2021
73% complete
MRI
Diagram
Article
Bone metastases
Bone (skeletal) metastases are the third most frequent behind lung and liver metastases 6. They result in significant morbidity in patients with metastatic disease. Although the diagnosis is often straightforward, especially as in many cases there is a well-documented history of metastatic malig...
Article
Central atypical cartilaginous tumor/ low-grade chondrosarcoma
Central atypical cartilaginous tumors/chondrosarcomas grade 1 (ACT/CS1) or low-grade central chondrosarcomas are locally aggressive chondral neoplasms that arise centrally within bone from the medullar cavity. They constitute the most common form of conventional chondrosarcoma.
Terminology
The...
Article
Central intermediate and high-grade chondrosarcoma
Central chondrosarcomas grade 2 and 3 (CS2/CS3) are malignant intermediate- and high-grade conventional chondrosarcomas that arise intramedullary 1-3.
Epidemiology
Similar to low-grade chondrosarcoma, the incidence of central intermediate and high-grade chondrosarcomas has also risen compared ...
Case
Chalk stick fracture
Published
30 Mar 2022
92% complete
CT
Article
Chondroblastoma
Chondroblastomas are benign chondrogenic bone neoplasms characteristically arising in the epiphysis or apophysis of a long bone in young patients. Despite being rare, they are one of the most frequently encountered benign epiphyseal neoplasms in skeletally immature patients 1.
Chondroblastoma a...
Article
Coccygeal glomus tumor
Coccygeal glomus tumors are rare benign neoplasms with the same morphologic features, expressed by glomangiomas occurring at extra coccygeal sites as under the fingernails or toes.
Terminology
The term "glomus" was historically used to describe certain types of neuroendocrine tumors arising fr...
Case
Combined flexion-extension cervical spine fractures with traumatic spinal cord injury
Published
16 Aug 2016
95% complete
CT
MRI
Article
Crossover sign (femoroacetabular impingement)
The crossover sign, also known as the 'figure of 8' sign, is a plain film sign that indicates acetabular retroversion 2. Acetabular retroversion is a form of pincer morphology and predisposing factor for femoroacetabular impingement and is thought to promote osteoarthritis of the hip 3.
Radiog...
Article
CT hip (protocol)
The CT hip protocol serves as an examination for the evaluation of the hip joint. It is often performed as a non-contrast study. However, it can be combined with a CT arthrogram for the evaluation of chondral and/or labral tears or a femoral neck version scan.
Note: This article aims to frame a...
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