Negative ulnar variance is not a risk factor for Kienböck's disease

D'hoore, K.; Smet, Luc De; Verellen, K.; Vral, J.; Fabry, Guy

doi:10.1016/0363-5023(94)90010-8

Cited by 90 publications

(46 citation statements)

References 15 publications

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“…Garcia-Elias and Vidal (13), in a group of KD 28 men and 12 women, connected the lunate length to lunate morphology but assumed some exceptions, unlike the Schuurman et al (14) with 68 wrists with no connection of ulnar length to lunate shape. UV difference between case and control group in our study is similar to the reports that are in favor of ulnar minus having a role in KD (4) and against those reports who believe that UV has no role in KD (6). …”

Section: Discussionsupporting

confidence: 90%

“…Some authors have suggested that the morphology and microstructure of the wrist bones, intraosseous pressure, and mechanical stresses have etiologic and prognostic values (3)(4)(5). Ulnar variance (UV) is a good example of many author's attempt to show that the negative UV is playing a key role (4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15), despite many normal individuals with a negative UV, that doesn't get KD (6) and many KD patients with positive UV (16). One of the theories that has repeatedly been proposed is the effect of lunate morphology in KD, either as an etiologic or a prognostic factor like Viegas and Zapico (15,17,18).…”

Section: Introductionmentioning

confidence: 99%

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The Effect of Proximal Lunate Morphology “Zapico Classification” on Kienböck’s Disease

2017

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Section: Discussionsupporting

confidence: 90%

Section: Introductionmentioning

confidence: 99%

The Effect of Proximal Lunate Morphology “Zapico Classification” on Kienböck’s Disease

2017

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“…However, other reports stated that ulnar variance had no correlation with Kienbock's disease 14,15) . Moreover, the occurrence rates of ulnar negative variance in Kienbock's disease patients and the normal population were the same 12,16) . Han et al 17) .…”

Section: Resultsmentioning

confidence: 78%

Biomechanical Comparison of Two Surgical Methods in Treating Stage IIIb Lunate Necrosis

Li¹,

Su²,

Xu³

et al. 2016

J. Hard Tissue Biology.

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This study aims to determine the biomechanical changes and basis for treatment using two surgical methods (scaphotrapeziotrapezoid [STT] fusion and capitoscaphoid [CS] fusion) for stage IIIb lunate necrosis. Eighteen fresh frozen upper extremities of adult cadavers were randomly divided into three groups. In group A, only the radioscaphoid and radiolunate spaces were exposed to place pressure sensors. Groups B and C underwent STT and CS fusion, respectively. The advanced I-scan pressure measurement system was used. Piezoelectric films were placed at the radioscaphoid and radiolunate spaces of wrist joints, and connected to the computerized I-scan system, which was then connected to a biaxial hydraulic material testing system (MTS). Pressure (up to 100 N) was applied to the wrist in inferior neutral position at a 10 N/s compression rate. The pressure distribution, pressure loading, and other data on the radioscaphoid and radiolunate articular surfaces for each sample were dynamically recorded and analyzed. After application of pressure with the wrist in neutral position, the radioscaphoid and radiolunate pressure values of the normal wrist group A were 41.39 ± 6.93 N/cm 2 and 39.22 ± 6.61 N/cm 2 , respectively; those of the STT arthrodesis group B were 83.89 ± 11.27 N/cm 2 and 22.55 ± 11.27 N/cm 2 ; and those of the SC arthrodesis group C were 86.45 ± 8.10 N/cm 2 and 34.11 ± 8.10 N/cm 2 . Compared with CS fusion, STT fusion surgery has much greater value in preventing rotatory semidislocation of the scaphoid bone, as well as in maintaining the stability of the wrist. It is the preferred surgical treatment for stage IIIb lunate necrosis.

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“…However this theory was questioned by D'Hoore et al reviewing 52 patients with KD. They found no significant statistical relationship between ulnar variance and KD (17).…”

Section: Discussionmentioning

confidence: 91%