Ulnar variance--the effect of wrist positioning and roentgen filming technique
Ulnar variance--the roentgenographic distance between contiguous articular surfaces of the distal radiocarpal and ulnocarpal joints--changes with wrist and forearm position. Supination increases the measurement of negative ulnar variance. Pronation decreases the measurement of negative ulnar variance. Wrist deviation and alterations of the x-ray beam in the longitudinal plane also influence the measurement. A standardized wrist roentgenogram has been developed to allow accurate and reproducible measurements of ulnar variance. Internal landmarks for recognizing the standard views are introduced. The use of standard wrist roentgenographic techniques for all wrist films is recommended.
Results of ulnar shortening osteotomy for ulnocarpal impaction syndrome in wrists with neutral or negative ulnar variance
The load-bearing characteristics of the forearm: pattern of axial and bending force transmitted through ulna and radius
Ultrasound imaging of normal displacement of the extensor carpi ulnaris tendon within the ulnar groove in 12 forearm-wrist positions
Assessment of dorsal instability of the ulnar head in the distal radioulnar joint: comparison between normal wrist joints and cases of ruptured extensor tendons
Changes in muscle geometry during forearm pronation and supination and their relationships to EMG cross-correlation measures
Arthroscopic treatment of peripheral triangular fibrocartilage complex tears with the deep fibers intact
Management of peripheral triangular fibrocartilage complex tears in the ulnar positive patient: arthroscopic repair versus ulnar shortening osteotomy
In vivo three-dimensional displacement of the distal radioulnar joint during resisted forearm rotation
X-ray evaluation of the true neutral position of the wrist: the groove for extensor carpi ulnaris as a landmark
Treatment of unstable distal radius fractures: methods and comparison of external distraction and ORIF versus external distraction-ORIF neutralization
Contact area inside the distal radioulnar joint: effect of axial loading and position of the forearm
Results of combined internal and external fixation for the treatment of severe AO-C3 fractures of the distal radius
The distal radioulnar joint capsule: clinical anatomy and role in posttraumatic limitation of forearm rotation
Kinematics of the distal radioulnar joint in rheumatoid arthritis: an in vivo study using centrode analysis
Does the normal contralateral wrist provide the best reference for X-ray film measurements of the pathologic wrist?
Study of ulnar variance with high-resolution MRI: correlation with triangular fibrocartilage complex and cartilage of ulnar side of wrist
Symptoms and radiographic findings in the proximal and distal ulnar stumps after the Sauvé-Kapandji procedure for treatment of chronic derangement of the distal radioulnar joint
Instability of the distal radioulnar joint: Treatment options for ulnar lesions of the triangular fibrocartilage complex
No relation between ulnar variance and scapholunate dissociation. A comparison between 42 patients and 125 controls
Unusual pattern of Essex-Lopresti injury with negative plain radiographs of the wrist: a case report and literature review
A comparison of 3-D computed tomography versus 2-D radiography measurements of ulnar variance and ulnolunate distance during forearm rotation
Commentary on Kawanishi et al. 'A comparison of 3-D computed tomography versus 2-D radiography measurements of ulnar variance and ulno-lunate distance during forearm rotation'
Indirect reduction and percutaneous fixation versus open reduction and internal fixation for displaced intra-articular fractures of the distal radius: a randomised, controlled trial
Open reduction and internal fixation with bone grafts for comminuted mason type II radial head fractures
During forearm rotation the three-dimensional ulnolunate distance is affected more by translation of the ulnar head than change in ulnar variance
The surgical treatment of isolated mason type 2 fractures of the radial head in adults: comparison between radial head resection and open reduction and internal fixation
Fracture of the radial head with associated elbow dislocation: results of treatment using a floating radial head prosthesis
A randomized, controlled trial of distal radius fractures with metaphyseal displacement but without joint incongruity: closed reduction and casting versus closed reduction, spanning external fixation, and optional percutaneous K-wires
Assessment of the position of the distal portion of the ulna in lateral projection radiographs of the wrist: analysis of the influence of pronation-supination and flexion-extension on the pisoscaphoid and the ulnotriquetral distances: a cadaver study
What are the radiological predictors of functional outcome following fractures of the distal radius?
Well-founded practice or personal preference: a comparison of established techniques for measuring ulnar variance in healthy children and adolescents
Commentary on Trehan et al. Arthroscopic treatment of triangular fibrocartilage complex injuries in paediatric and adolescent patients
Surgical Treatment of Distal Radial Fractures with External Fixation Versus Volar Locking Plate: A Multicenter Randomized Controlled Trial.
The effect of forearm rotation on radiographic measurements of the wrist: an experimental study using radiostereometric analyses on cadavers.
Long-term outcome after arthroscopic debridement of Palmer type 2C central degenerative lesions of the triangular fibrocartilage complex.
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