The scaphotrapezial ligament complex: An anatomic and biomechanical study

Drewniany, John J.; Palmer, Andrew K.; Flatt, Adrian E.

doi:10.1016/s0363-5023(85)80070-8

Cited by 113 publications

(55 citation statements)

References 21 publications

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“…Second, contribution of gradual attenuation and laxity of the carpal ligaments can not be assessed in this cadaveric model. In addition, the presence of the STLC and DICL was proven to stabilize the distal pole of the scaphoid [8, 9,27,29]. Our study did not assess the effect of the STLC, DRCL, and DICL.…”

Section: Discussionmentioning

confidence: 99%

Wrist kinetics after scapholunate dissociation: the effect of scapholunate interosseous ligament injury and persistent scapholunate gaps

Tang

Ryu

Omokawa

et al. 2002

Journal Orthopaedic Research

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The purpose of this study was to investigate the effects of cutting of the scapholunate interosseous ligament (SLIL) and persistent widening of the scapholunate (SL) joint on changes in moment arms of the principal wrist motor tendons. In seven fresh frozen cadaveric upper extremities, excursions of the extensor carpi radialis longus (ECRL) and brevis (ECRB), extensor carpi ulnaris (ECU), flexor carpi radialis (FCR), and flexor carpi ulnaris (FCU) were recorded simultaneously with wrist joint angulation during wrist flexion-extension and radioulnar deviation. Tendon excursions were measured in intact wrists, then in the wrists with complete SLIL sectioning and in those with moderate or severe persistent SL joint widening. The data were converted to moment arms of the tendons. The results showed that moment arms of the ECRL and ECRB tendons after SLIL sectioning were, respectively, 1 10 f 6' !,0 and 105 ! C 3% of those in the intact wrist. In the wrists with moderate or severe SL joint widening, moment arms of the flexors significantly increased ( P < 0.01 and P < 0.001, respectively). During radioulnar deviation, moment arms of the ECRL, ECRB, ECU, and F C U tendons decreased after SLIL sectioning and the SL joint widening. However, moment arms of the FCR tendon significantly increased 123 f 23'%1 after the SLIL section, 133 i 38% after the moderate SL joint widening, and 138 i 24%) after the severe SL joint widening compared with those of the intact wrists. This study demonstrated that integrity of the SLIL and appropriate SL joint space are important for mechanics of wrist motor tendons. Loss of integrity of the SLIL and persistent SL joint widening increase mechanical effects of the radial side wrist motor tendons, which may contribute to the pathomechanics of scaphoid malrotation, scapholunate advanced collapse, and early osteoarthritis in the radioscaphoid joint interface seen in SL dissociation. The results also suggest that reduction of the displaced SL joint is imperative to the recovery of wrist kinetics after SL dissociation.

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Section: Discussionmentioning

confidence: 99%

Wrist kinetics after scapholunate dissociation: the effect of scapholunate interosseous ligament injury and persistent scapholunate gaps

Tang

Ryu

Omokawa

et al. 2002

Journal Orthopaedic Research

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“…11,[17][18][19][20] However there is controversy as to whether to achieve reduction via open or closed means and how to maintain the scapholunate relationship. There is no clear evidence to suggest that open reduction and acute repair of the SLIL is advantageous to closed reduction and pinning alone.…”

Section: Discussionmentioning

confidence: 99%

Clinical outcomes following reduction and pinning of lesser arc injuries without repair of the scapholunate interosseous ligament

et al. 2017

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“…13,16,17 Given its course around the scaphoid tuberosity, it was thought that the flexor carpi radialis tendon played a role in carpal stability by causing scaphoid extension. 18 However, in a cadaveric study, Salva-Coll and colleagues 19 demonstrated that this is not the case. When the wrist was loaded, the scaphoid rotated into flexion and supination and the triquetrum rotated into flexion and pronation placing a rotary moment on the proximal carpal row.…”

Section: Scapholunate Interosseous Ligamentsmentioning

confidence: 98%

“…1 The SC ligament forms part of the scaphotrapezium-trapezoid (STT) ligament complex and is an important stabilizer of the midcarpal joint. 18 The STT ligament complex has 4 components, with the stout radiopalmar scaphotrapezial ligament being the major anatomic stabilizer of the joint (Box 2). This ligament originates from the scaphoid tuberosity and inserts along the trapezial ridge.…”

Section: Midcarpal Ligamentsmentioning

confidence: 99%