Nov 28, 2024 · 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 s capholunate ligament and is more often encountered than volar intercalated segment instability (VISI).

May 25, 2024 · 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).

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). The scapholunate angle in a normal situation on the sagittal imaging of …

A volar intercalated segment instability (VISI) deformity features a volar rotation of the lunate mainly after disruption of the lunotriquetral ligament. On lateral imaging, volar flexion of the lunate with a scapholunate angle , measuring <30 degrees and an increased capitolunate angle measuring >30 degrees 1 has been used in the diagnosis.

Feb 11, 2025 · dorsal intercalated segment instability (DISI) volar intercalated segment instability (VISI) ulnar translocation. radial translocation. The Mayo classification subdivides carpal instability according to different patterns within and between the carpal rows, which can be attributed to different causes 1-5:

May 21, 2023 · 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).

Nicoletti D, Scapholunate advanced collapse (SLAC) and dorsal intercalated segmental instability (DISI). Case study, Radiopaedia.org (Accessed on 04 Apr 2025) https://doi.org/10.53347/rID-56176

Apr 5, 2023 · 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).

Nov 27, 2024 · The angle is increased in carpal instability such as with a dorsal intercalated segment instability (DISI) and volar intercalated segment instability (VISI). The scapholunate angle is used to differentiate between the two.

Here is a dynamic sequence to get an idea of how the alignment changes between DISI and VISI