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.
201 results found
Article
Atzei classification of peripheral TFCC tears
The Atzei classification of peripheral triangular fibrocartilage complex (TFCC) tears offers a more differentiated approach on a spectrum of peripherally located triangular fibrocartilage complex (TFCC) tears, which are classically summarized as “Palmer 1b” lesions 1-3.
Usage
Peripheral lesion...
Article
Anderson and Montesano classification of occipital condyle fractures
The Anderson and Montesano classification is a widely used system for describing occipital condyle fractures. It divides injuries into three types based on morphology and mechanism of injury 1-5.
Classification
type I: impacted type occipital condyle fracture
morphology: comminution of the co...
Article
Hamate fracture (classification)
Hamate fractures are an uncommon form of carpal bone fractures and only account for 1-2% of such fractures.
Classification
Hamate fractures usually get subdivided into two broad groups: hook fractures and body fractures.
Classification of hamate fractures:
type 1: hook of hamate fractur...
Article
International Myeloma Working Group response criteria
The International Myeloma Working Group response criteria are consensus definitions used to assess response to treatment of multiple myeloma. With the latest version published in 2016, the criteria have been widely adopted for classifying responses in clinical trials and in routine practice 1. I...
Article
Lateral humeral condyle fracture
Lateral humeral condyle fractures also referred to simply as lateral condyle fractures (in the appropriate context), are relatively common elbow fractures that predominantly occur in children. They may be subtle but are hugely important to diagnose promptly because if they are missed, they tend ...
Article
MRI grading system for abnormal meniscal signal intensity
MRI grading system for abnormal high meniscal signal intensity was reported by Lotysch et al.
Classification
Grade 1 to 3 have been described on MRI:
grade 1: small focal area of hyperintensity, no extension to the articular surface
grade 2: linear areas of hyperintensity, no extension to ...
Article
Neer classification of clavicle fractures
The Neer classification of clavicular fractures along with the AO classification system is one of the more frequently used classification systems when assessing clavicular fractures.
Classification
The classification system, broken into five categories communicates both the stability and treat...
Article
Robinson classification of clavicle fractures
The Robinson classification of clavicle fractures, as well as the AO/OTA and Neer classification systems, is a frequently used classification system for assessing clavicular fractures.
The Robinson classification is based on a review of a thousand patients and was developed to provide a guide t...
Article
WHO classification of tumors of bone
The World Health Organization (WHO) classification of bone tumors is the most widely used pathologic classification system for such disorders. The current revision, part of the 5th edition of the WHO series, was published in 2020 and is reflected in the article below 1.
Classification
Chondrog...
Article
Mayo classification of olecranon fractures
The Mayo classification of olecranon fractures is one of the most frequently used classification systems when assessing olecranon fractures.
The Mayo classification can be used to aid in treatment choice. Mayo type II and III fractures usually require operative treatment.
Classification
The M...
Article
Bado classification of Monteggia fracture-dislocations
The Bado classification is one of the more widely used classifications for Monteggia fracture-dislocations and mainly focuses on the radial component. Four types are recognized and are generally based on the principle that the direction in which the apex of the ulnar fracture points is the same ...
Article
Anterior cruciate ligament avulsion fracture
Anterior cruciate ligament (ACL) avulsion fracture or tibial eminence avulsion fracture is a type of avulsion fracture of the knee. This typically involves separation of the tibial attachment of the ACL to variable degrees. Separation at the femoral attachment is rare 5.
Epidemiology
It is mor...
Article
Winquist classification of femoral shaft fractures
The Winquist classification of femoral shaft fractures is based on fracture comminution and was proposed by Winquist in 1980. This classification is used with regards to management decision making, in determining whether a fracture requires an intramedullary nail or open reduction.
type 0: no ...
Article
Nunley-Vertullo classification
The Nunley-Vertullo classification is one of several classification systems used for the categorization of Lisfranc injuries. It is based on clinical, x-ray and bone scan findings and also associates the stages with management options or recommendations regarding those injuries 1-3.
Usage
The ...
Article
Weishaupt grading system of lumbar facet joint degeneration
The Weishaupt grading system is a radiological classification system used for lumbar facet joint degeneration.
Usage
The Weishaupt grading system for lumbar facet joint degeneration can be used in CT and/or MRI 1,2.
Classification
grade 0: normal facet joint width (~2-4 mm)
grade 1: facet j...
Article
Open book pelvic injury
Open book pelvic injuries are most often the result of high-energy trauma and are associated with significant morbidity and mortality due to associated vascular injuries.
Pathology
Open book pelvic injuries result from an anteroposterior compression injury to the pelvis and result in a combin...
Article
Zone classification of extensor tendon injury
The zone classification of extensor tendon injuries divides injuries into zones based on anatomical location.
The zone classification is proposed to guide the management of these injuries and predict possible outcomes.
Classification
Flexor tendon injuries were initially classified into eight...
Article
Le Fort fracture classification
Le Fort fractures are fractures of the midface, which collectively involve separation of all or a portion of the midface from the skull base. In order to be separated from the skull base, the pterygoid plates of the sphenoid bone need to be involved as these connect the midface to the sphenoid b...
Article
Gartland classification of supracondylar humeral fractures
The Gartland classification of supracondylar fractures of the humerus is based on the degree and direction of displacement, and the presence of intact cortex. It applies to extension supracondylar fractures rather than the rare flexion supracondylar fracture.
Classification
type I: undisp...
Article
Nerve injury classification (MRI)
Nerve injury classification describes the various features of nerve injury on MRI with respect to pathological events.
Classification
neuropraxia
grade I:
there is increased T2/STIR signal in the nerve, however, the muscle appears normal
recovery occurs within a few days to 3 months
axono...