In-vivo three-dimensional measurement of distal radioulnar joint translation in normal and clinically unstable populations

Section: Discussionmentioning

confidence: 99%

Treatment of symptomatic non-unions of the base of the ulnar styloid with plate osteosynthesis

Nuñez

Luo

2016

“…Although this reduces the variance in measurement results due to differences in assessment of various surgeons, it is a potential bias. We were not able to identify a well-defined and validated clinical nor radiographic classification, although use of a rig may contribute to more objectively diagnosing DRUJ instability ( Pickering et al, 2016 ). Bowers et al described instability as when the ulnar head is abnormally prominent dorsally without instructions how to perform the test ( Bowers, 1991 ).…”

Section: Discussionmentioning

confidence: 99%

Modification of the use of the extensor retinaculum for reducible distal radioulnar joint instability: technique and results

Filius

Zuidam

Jaquet

et al. 2017

Different surgical techniques have been described for chronic distal radioulnar joint instability: they are often complicated, quite invasive and may not be recommended for bidirectional instability. We describe a procedure using a radial-based extensor retinaculum strip and a capsular plication. This is a simple technique and less invasive than ‘anatomic’ radioulnar ligament reconstructions. We report the results of 38 patients (38 wrists) who we treated. After a minimum of 8 months we quantified the outcomes of the patients objectively by assessing ranges of motion, grip strength and clinical assessment of stability, and subjectively using questionnaires. Overall, 36 out of 38 patients were stable after surgery. The operated forearm and wrist had approximately 3° less range of motion in all planes and 3 kgf less grip strength compared with the unoperated side. The median Mayo modified wrist score was 90; the median visual analogue scale score was 2. This surgical technique appears to successfully treat patients with chronic reducible distal radioulnar joint instability. Anatomic reconstruction of both radioulnar ligaments is not always necessary.Level of evidence: IV

“…Radial deviation of the carpus decreases DRUJ shear, implying increased stiffness (Iida et al, 2014;Pickering et al, 2016). As the wrist may have tendency to a radial deviated position with the radial angulation deformity, the radial deviation may contribute to an increase in DRUJ stiffness.…”

Section: Discussionmentioning

confidence: 99%

Effect of decrease in radial inclination of distal radius fractures on distal radioulnar joint stability: a biomechanical study

Bessho

Nakamura

Nishiwaki

et al. 2018

We investigated the relationship between the radial inclination of the distal radius and distal radioulnar joint stability. Six fresh-frozen upper extremities were used. Radial inclination was decreased by 10° and 20° and increased by 10° from the original radial inclination. Distal radioulnar joint stiffness was assessed with an intact radioulnar ligament and after partial and then complete sectioning of the radioulnar ligament. Radial angulation deformities significantly increased distal radioulnar joint stiffness when the radioulnar ligament is totally or partially attached to the ulnar fovea. After complete sectioning of the radioulnar ligament, distal radioulnar joint stiffness decreased significantly; additional radial angulation deformity slightly increased distal radioulnar joint stiffness, but the distal radioulnar joint never recovered to the original stiffness. Based on the results, radial angulation deformities of the distal radius should be corrected within 10° when the radioulnar ligament is intact, to reduce the risk of symptomatic distal radioulnar joint instability.