Articles
Articles are a collaborative effort to provide a single canonical page on all topics relevant to the practice of radiology. As such, articles are written and continuously improved upon by countless contributing members. Our dedicated editors oversee each edit for accuracy and style. Find out more about articles.
4,269 results found
Article
Neer classification of proximal humeral fractures
The Neer classification of proximal humeral fractures is probably the most frequently used system along with the AO classification of proximal humeral fractures. The terminology and factors which influence the classification are essential for the utility of radiology reports of proximal humeral ...
Article
Sagittal balance
Sagittal balance, along with coronal balance, reflects the innate neutral standing position with C7 positioned over S1 as a feature of human bipedalism 1,3.
Pathology
Sagittal balance can change depending on various factors, including spinal deformities such as a loss of lumbar lordosis 1.
Ra...
Article
Disarticulation
The term disarticulation refers to the disconnection of all or part of a limb from the body, specifically through a joint. This is in contrast to amputation, which is the disconnection or removal of the structure through a bone 1,2.
Article
Foot injection (disambiguation)
Foot injection is a non-specific term often used by patients, about tarsal or metatarsal joint injections and to other procedures which include:
calcaneocuboid joint injection
metatarsophalangeal joint (MTPJ) injection
naviculocuneiform joint injection
plantar fascia injection
plantar fasc...
Article
Hoffa fracture
Hoffa fracture, also known as Busch-Hoffa fracture, is a type of distal condylar femoral fracture and is characterized by an associated fracture component in the coronal plane.
Epidemiology
While they are rare in absolute numbers, they can account for approximately 40% of intercondylar fractur...
Article
Osteogenesis imperfecta
Osteogenesis imperfecta (OI) refers to a heterogeneous group of congenital, non-sex-linked, genetic disorders of collagen type I production, involving connective tissues and bones.
The hallmark feature of osteogenesis imperfecta is osteoporosis and fragile bones that fracture easily, as well a...
Article
Superficial CD34-positive fibroblastic tumor
Superficial CD34-positive fibroblastic tumors (SCPFT) or PRDM10-rearranged soft tissue tumors are rare low-grade mesenchymal neoplasms of the dermis and subcutis 1-3 that have been just added to the WHO classification of soft tissue tumors in 2020 2,3.
Epidemiology
Superficial CD34-positive fi...
Article
Chondral fracture
Chondral fractures are fractures that involve cartilage only unlike osteochondral fractures where the articular cartilage, as well as the subchondral bone plate, are involved 1.
Epidemiology
Chondral fractures typically occur in combination with ligamentous injuries in young adults but can be ...
Article
Antihelix (ear)
The antihelix of the ear refers to the Y-shaped cartilage within the external ear, it lies next to the scapha of the ear, the ridge separating the helix from the antihelix.
Gross anatomy
The antihelix can be divided into two parts bifurcating around the triangular fossa1:
superior crus: upper...
Article
Reactive arthritis
Reactive arthritis (ReA) is a sterile inflammatory monoarticular or oligoarticular arthritis that follows an infection at a different site, commonly enteric or urogenital. It is classified as a type of seronegative spondyloarthropathy.
Terminology
Reactive arthritis was formerly known as Reite...
Article
CT lumbar spine (protocol)
The CT lumbar spine or L-spine protocol serves as an examination for the assessment of the lumbar spine. As a separate examination, it is most often performed as a non-contrast study. It might be combined or simultaneously acquired with a CT abdomen. It also forms a part of a polytrauma CT or mi...
Article
Rotator cuff tear arthropathy
Rotator cuff tear arthropathy is a spectrum of degenerative disease that develops due to a rotator cuff deficient shoulder. The term encompasses both rotator cuff tendinopathic change as well as associated joint degenerative change.
Epidemiology
Elderly women are affected more than men and it...
Article
Dynamic hip screw
A dynamic hip screw (DHS) is a femoral head-sparing orthopedic device used to treat femoral neck fractures. It is sometimes referred to as a pin and plate.
Femoral neck fractures that are undisplaced and hence have a low risk of osteonecrosis (Garden I and II fractures) can be treated with head...
Article
Bertolotti syndrome
Bertolotti syndrome refers to the association between lumbosacral transitional vertebrae and low back pain.
Although it may be a consideration in younger patients, the entity is considered controversial and has been both supported and disputed. Some studies suggest lumbosacral transitional vert...
Article
Meniscal flounce
Meniscal flounces refer to the "ruffled" appearance of the inner margin of knee menisci. They were initially thought to be only an arthroscopic finding, as a result of joint distension and anesthetic muscle relaxants but they are occasionally seen on MRI.
Epidemiology
Meniscal flounces are un...
Article
Spinal wedge fracture
Spinal wedge (compression) fractures are hyperflexion injuries to the vertebral body resulting from axial loading. Most commonly affecting the anterior aspect of the vertebral body, wedge fractures are considered a single-column (i.e. stable) fracture.
Epidemiology
Spinal wedge compression fr...
Article
McAfee classification of thoracolumbar spinal fractures
McAfee classification of acute traumatic spinal injuries is one of a number of thoracolumbar spinal fracture classification systems and is based on the three-column concept of the spine (of Denis). It requires CT for an accurate assessment.
Usage
Unlike the more common formal and widely used c...
Article
Acetabular angle
The acetabular angle, also known as Sharp angle 6, is a radiographic measurement most commonly used to evaluate potential developmental dysplasia of the hip (DDH) in children and acetabular dysplasia in adults.
Usage
The acetabular angle is used in patients who have started to ossify the epiph...
Article
Knee capsule
The knee capsule is a dual-layered structure that surrounds the knee joint. It is relatively thin anteriorly and posteriorly and thickened laterally by the collateral ligaments.
Gross anatomy
The outer layer of the knee capsule consists of fibrous connective tissue to hold the joint in place,...
Article
Normal lower limb imaging examples
This page lists examples of normal imaging of the lower limb, divided by region and modality.
Pelvic girdle
plain radiograph
pelvis
example 1: frontal
example 2: pediatric
example 3: pediatric (9 months, 11 months, and older child)
example 4: trauma supine
example 5: frontal (female)
ex...
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