In a nutshell, scapho-lunate dissociation is when these two bones are forced apart due to trauma. Normally they sit closely beside each other and are held in place by ligaments. In this injury, the two bones are spread apart and the ligament that holds them close together is torn.

The scapholunate joint is essential to carpal function. A scapholunate dissociation (SLD), which progresses through several stages, finally ends as a perilunate dislocation. The injury can be completely ligamentous or can be a combined fracture and ligamentous injury. SLD is one of the most common types of carpal instability.

What does SLD stand for? SLD abbreviation stands for scapholunar dissociation. Combined fracture of the scaphoid and capitate bones with concurrent scapholunate dissociation, but without severe dislocation, is a rare lesion which results in significant carpal instability and requires operative treatment. We report a case of this unusual injury and its functional result after 20 months. Scapholunate ligament injury is commonly seen in adults few published cases of complete scapholunate dissociation scapholunate ballottement on right side was painful.

Scapholunar dissociation

Scapholunate dissociation is a rotatory subluxation of the scaphoid with widening of the gap between the scaphoid and lunate. It is caused by rupture of the ligaments between radius, … Scapholunate Dissociation. Tomas A. A 52-year-old man sustained an injury to the right wrist following a fall into a push-up position. Direct-access outpatient physical therapy evaluation was … Classic mechanism of injury: axial loading to a hyperextended wrist, as in a fall on an outstretched hand (FOOSH) Disruption of scapholunate ligaments result in translational (separation between scaphoid and lunate bones) and rotational instability Mayfield classification of carpal dislocation patterns 2 Table 1. Scapholunate dissociation is a spectrum of rotational abnormalities that is dependent on the severity of the injury and the resulting involvement of ligamentous abnormalities, and is one of the most common forms of carpal instability. Scapholunate (SL) dissociation is part of a spectrum of traumatic carpal bone instabilities and is defined as disruption of the ligamentous complex holding the scaphoid and lunate together.

113; Flexor Tenosynovitis p. 114; Common Extensor Tenosynovitis p. 115; Scapholunate Dissociation p. 116; TFCC Tear p. 117; Dorsal Impaction Syndrome p.

Wrick JD et al performed proximal row carpectomy for SLAC and were successful in preserving joint motion1. Scapholunate dissociation is a rotatory subluxation of the scaphoid with widening of the gap between the scaphoid and lunate.

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 DISI deformity may also develop secondary to distal pole of the scaphoid excision for treatment of STT arthritis

It consists of dorsal, proximal and palmar segments that bridge the scaphoid and lunate. When the ligament complex tears, the scaphoid tends to flex while the lunate extends, creating translational and rotational instability between the two. Scapho-lunate ligament is an important ligament that holds the scaphoid and lunate bones together. When ruptured it can cause pain and instability in the wrist in short term and degenerative arthritis in 5-10 years. The injury often results from a fall onto the outstretched hand or a forceful / violent twisting injury to the hand.

On radiographs, findings that are suspicious for scapholunate dissociation are widening of the scapholunate interosseous space greater than 2-4 mm, 2020-04-14 This pattern of ulnar translocation, in reality, represents a severe form of scapholunate dissociation and carries a worse prognosis. 19 Figure 19: T1-weighted coronal image demonstrates ulnar translocation of only the lunate (L) and triquetrum (T) bones [radsource.us] Etiology.
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Mayfield et al.

The change of SL angle, SL dissociation, and the load to failure of the 5 different Kirschner wire fixation techniques (using 1.4-mm Scapholunate dissociation is the abnormal orientation or movement of the small bones of your wrist, the scaphoid and lunate bones in relation to one another. Dr Sellers offers treatment for this condition in Wetumpka, Prattville and Montgomery, AL. 17.5 Open Treatment of Acute and Subacute Scapholunate Ligament Injury and Dissociation. Partial injuries are not best treated by open surgery.
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10 Mar 2014 Scapholunate dissociation Power Point. 1. 46yo male presents with chief complaint of left wrist pain. Patient slipped on side walk on sheet of

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