What is Disi deformity of wrist?

Dorsal intercalated segment instability (DISI) is a deformity of the wrist where the lunate angulates to the posterior side of the hand.

What causes Disi deformity?

A DISI deformity refers to extension of the lunate relative to the capitate and radius and is most commonly observed following rupture of the scapholunate interosseous ligament (Figure 4).

What causes wrist instability?

Carpal instability may be due to ligament laxity, traumatic ligament disruption or malunion of distal radius fractures. This laxity causes misalignment of the carpal bones, altering normal wrist kinematics and ability for load bearing. The injury may be due to a high velocity incident or a low energy event.

How do I strengthen my Scapholunate ligament?

Slowly start to increase wrist flexion (wrist bending) by lowering both wrists while maintaining the palms together. The fingers and thumbs should be resting against each other. Hold a comfortable stretch about 15 seconds. Repeat 8–10 times, 3–4 times per day.

How do you fix a Scapholunate ligament?

If this non-operative treatment does not work, surgery may be considered to repair or reconstruct the ligament to help align the wrist bones. This can be done with arthroscopy or an open surgery. Repair or reconstruction of the ligament can lead to wrist stiffness, but the wrist will be more stable.

How long does it take for a Scapholunate ligament tear to heal?

These injuries are usually considered as ligament sprains where one or 2 parts of this 3 part ligament is injured, but there is no instability in the wrist. They respond well to a period of immobilization in plaster (4-6 weeks) followed by analgesia and hand therapy. Recovery can take up to 18 months.

What does a Scapholunate ligament tear feel like?

What are the symptoms of a scapholunate ligament injury? Often a fall has been the cause of the injury, and symptoms of wrist pain follow. There may be swelling, reduced grip strength, pain over the area of the scapholunate ligament and a sensation of instability of the wrist with actitvities.

How can hand therapy lead to better treatment of wrist instability?

WRIST INSTABILITY Science of proprioception E Hagert Roles of the muscles in carpal stability M Garcia-Elias Wrist Kinematics and DTM Wolfe Individual occupational needs/expectations Mancuso How can an understanding of wrist motion lead to better treatment and rehab?

Who is the best doctor for wrist instability?

Aviva Wolff, EdD, OTR, CHT Clinician Scientist Leon Root, MD Motion Analysis Laboratory Hospital for Special Surgery Impairment Mechanism Design Testing Functional Improvement Development of Rehabilitation Approach Impairment Mechanism Design and testing Rehabilitation Improvement in function Science informs practice WRIST INSTABILITY

How are joint position sensors injured in Disi wrist?

The joint position sensors are almost always injured when there is an injury to ligament and joint capsule. Proprioception retraining is essential to regaining normal function in a DISI wrist post operatively. It also helps to prevent future re-injury.

Can a scaphoid dissociate into a SLAC wrist?

diastasis of the scapholunate complex occurs with complete SLIL tears and capsule disruption. Associated injuries. DISI (dorsal intercalated segmental instability) scapholunate dissociation causes the scaphoid to flex palmar and the lunate to dorsiflex; if left untreated the DISI deformity can progress into a SLAC wrist