Search results for “disi”
39 results
Case
Scaphoid nonunion with humpback and DISI deformities
Published
05 Apr 2023
95% complete
MRI
Case
Scaphoid fracture with non-union, AVN, DISI, and SNAC
Published
10 Feb 2021
78% complete
CT
MRI
Case
Scapholunate advanced collapse (SLAC) and dorsal intercalated segmental instability (DISI)
Published
16 Oct 2017
77% complete
MRI
Case
Scapholunate advanced collapse (SLAC) & dorsal intercalated segment instability (DISI)
Published
14 Jul 2018
77% complete
CT
Playlist
DISI and VISI
3 cases
No description provided
Playlist
38.9 DISI
1 case
No description provided
Article
Dorsal intercalated segment instability
Dorsal intercalated segment instability (DISI) is a form of carpal instability featuring dorsal tilt of the lunate. It occurs mainly after the disruption of the scapholunate ligament and is more often encountered than volar intercalated segment instability (VISI).
Clinical presentation
radial ...
Playlist
Рис. 38.68 Разгибательная нестабильность DISI
1 case
No description provided
Article
Volar tilt
Volar tilt, or palmar tilt, is an important measurement in the evaluation of distal radius fractures and radial deformities.
Measurement
The volar tilt is assessed on the lateral radiograph of the wrist, it corresponds to the angle formed by a line drawn perpendicular to the axis of the radial...
Article
Volar intercalated segment instability
Volar intercalated segment instability (VISI) is a type of carpal instability featuring volar tilt of the lunate. It is less often encountered than dorsal intercalated segment instability (DISI).
Clinical presentation
VISI presents in most cases with nonspecific wrist pain and a "clunking" wit...
Article
Lunate
The lunate (os lunatum or semilunar) is one of the carpal bones and is a component of the proximal carpal row.
Gross anatomy
Osteology
The lunate is crescent-shaped with a proximal convex articular facet and a distal concave articular facet. On the medial surface is a square-shaped facet and ...
Article
Scaphoid fracture
Scaphoid fractures (i.e. fractures through the scaphoid bone) are common, in some instances can be difficult to diagnose, and can result in significant functional impairment.
Epidemiology
Scaphoid fractures account for 70-80% of all carpal bone fractures 1. Although they occur essentially at a...
Article
Four-corner fusion (wrist)
Four-corner fusion is a partial fusion technique used in some patients with advanced degenerative change in the wrist. Partial fusion reduces pain from the joint while still preserving some motion (as opposed to a total wrist fusion).
Indications
Advanced arthritis from
scapholunate advanced ...
Article
Lunate morphology
Several classification systems exist for the lunate morphology 1, 2.
Classification
The lunate classification proposed by Viegas et al. is arguably the most relevant 3:
type I lunate: single distal articular facet for the capitate
type II lunate: additional distal articular facet medially f...
Article
Hand radiograph (checklist)
The hand radiograph checklist is just one of the many pathology checklists that can be used when reporting to ensure that you always actively exclude pathology that is commonly missed; this is particularly helpful in the examination setting, e.g. the FRCR 2B rapid-reporting.
Radiograph
Hand ra...
Article
Scaphotrapeziotrapezoidal arthritis
Scaphotrapeziotrapezoidal (STT) or triscaphe joint arthritis is common, occurring on ~9% (range 2-16%) of wrist radiographs 3,4. It is typically degenerative (i.e. osteoarthritis) affecting the triscaphe articulation and presents with radial-sided wrist or base of thumb pain in patients over 50 ...
Article
Scapholunate dissociation
Scapholunate dissociation, also known as rotary subluxation of the scaphoid, refers to an abnormal orientation of the scaphoid relative to the lunate and implies severe injury to the scapholunate interosseous ligament and other stabilising ligaments.
Carpal dissociation implies carpal instabili...
Article
Carpal instability
Carpal instability refers to the inability of the wrist to maintain its structural stability under physiologic movements and loading forces ultimately leading to derangement of the carpal bones with associated malalignment.
Epidemiology
Associations
Clinical conditions associated with carpal ...
Article
Radioscaphoid angle
The radioscaphoid angle is a useful measurement in the evaluation of carpal stability.
Measurement
The radioscaphoid angle is the angle between a line tangent to the volar aspect of the scaphoid and a line drawn through the centre of the distal radius (2-5 cm proximal to the radiocarpal joint)...
Article
Perilunate dislocation
Perilunate dislocations and perilunate fracture-dislocations are potentially devastating closed wrist injuries that are often missed on initial imaging.
These injuries involve dislocation of the carpus relative to the lunate which remains in normal alignment with the distal radius. They should...
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