One specific wrist injury that can occur after falling on an outstretched hand is called scapho-lunate dissociation. A person who experiences pain in the back of the wrist or the thumb side of the wrist (following a fall) should be examined for scapho-lunate dissociation.

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.

Although injury to additional ligaments is present in scapholunate dissociation, the SLIL is the major target of surgical reconstruction. Dorsal intercalated segment instability (DISI) is a related carpal malalignment pattern whic… Scapholunate dissociation is when the small bones in the wrist (the scaphoid and the lunate) move excessively in relation to one another. Physiotherapy is an important part of scapholunate dissociation rehabilitation. How does scapholunate dissociation happen? Scapholunate dissociation (SLD) is the most common type of carpal instability. It is the most common instability pattern because the intercarpal motion during flexion and extension cross at the scapholunate interface.

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c/o severe pain in the right wrist. Frontal view of the wrist showed increase in scapholunate distance (arrow). It measures 3.5mm. Other intercarpal joints measures about 1.5mm only. This is consistent with Terry-Thomas sign and indicates scapholunate dissociation.

2015-12-21

2020-04-14 · Scapholunate dissociation is a difficult and unresolved problem in orthopedic hand surgery. Scapholunate ligament repair alone leads to failure and progression of scapholunate advanced collapse The scapholunate is an interosseous carpal ligament that provides stability to the proximal carpal row. 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.

15 Apr 2020 Scapholunate dissociation is a difficult and unresolved problem in orthopedic hand surgery. Scapholunate ligament repair alone leads to 

J Hand Surg Am. 2006;31(1):125-34. 7. Watson HK,  I en sådan situation framträder också en s k skafolunär dissociation. Det skafolunära avståndet på frontalbilden ska normalt sett vara mindre än  Scapholunate ligament dissociation Prof/ Galal Mansour Hegazy. Scapholunär dissociation, SL-dissociation.

The abnormal kinematics lead to a decrease in surface area contact at the radioscaphoid joint. This abnormal articulation causes an increased concentration of load, leading to the In a nutshell, scapho-lunate dissociation is when these two bones are forced apart due to trauma.
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09:58. Share. Tap to Unmute. This opens in a new window. Arthrodesis for chronic static scapholunate dissociation: a prospective study in 12 patients2004Inngår i: Scandinavian Journal of Plastic and Reconstructive  Dx: Fx-linje om det är tydligt, förskjutning och fördunkning av scaphoid (navicular) fettkudde, undersök för scapholunate dissociation.

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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.

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 (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. 1 The SL ligament complex consists of the volar, dorsal, and intermediate components, with the dorsal component being the strongest and primary stabilizer of the SL joint. 2 SL dissociation often results 17.5 Open Treatment of Acute and Subacute Scapholunate Ligament Injury and Dissociation. Partial injuries are not best treated by open surgery. Treatment options are instead arthroscopic debridement or thermal shrinkage, pinning, or physiotherapy with re-education of the FCR. Acute total injuries are preferably treated within 4 to 6 weeks. 2. Injury to scapholunate ligament (complete tear of the dorsal component) and radiolunate ligament will result in scapholunate dissociation.