Effects of Radial Head Excision and Distal Radial Shortening on Load-Sharing in Cadaver Forearms

Shepard, Michael F.; Markolf, Keith L.; Dunbar, Arati Mallik

doi:10.2106/00004623-200101000-00013

Cited by 67 publications

(39 citation statements)

References 10 publications

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“…[12][13][14][15] Valgus testing position was defined by applying a 2.5-Nm moment to the elbow that forced the radial head to contact the capitellum. Varus testing position was defined by applying a 2.5-Nm moment to the elbow that created a gap between the radial head and the capitellum.…”

Section: Methodsmentioning

confidence: 99%

Graft reconstruction of the interosseous membrane in conjunction with metallic radial head replacement: A cadaveric study

Tejwani

Markolf

Benhaim

2005

The Journal of Hand Surgery

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Section: Methodsmentioning

confidence: 99%

Graft reconstruction of the interosseous membrane in conjunction with metallic radial head replacement: A cadaveric study

Tejwani

Markolf

Benhaim

2005

The Journal of Hand Surgery

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“…the distal radio-ulnar joint [1,9,10,14,22,25,27]. With an Essex-Lopresti fracture-dislocation, IOL disruption is accompanied by triangular fibrocartilage injury a n d comminuted radial head fracture resulting in longitudinal radio-ulnar instability.…”

mentioning

confidence: 99%

Bi-directional mechanical properties of the human forearm interosseous ligament

STABILE¹

2004

Journal of Orthopaedic Research

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Interest in reconstruction of the interosseous ligament (IOL) of the forearm in the setting of longitudinal radio-ulnar dissociation has increased in recent years with hopes of improving clinical outcomes. This increased interest has been accompanied by research on biomechanics of the IOL. However, little is known about stress and strain in the IOL under externally applied forearm loads. This information is needed to help guide reconstruction. Mechanical properties of the IOL are needed to properly model the IOL for analyses such as finite element models. The objective of this study nas to document the bi-directional mechanical properties along the fiber direction (longitudinal) and perpendicular to the fiber direction (transverse). Twenty specimens were mounted in a materials testing machine to perform preconditioning and a load to failure tensile test in each direction. Strain markers on the surface of the specimens were tracked with a video system. Data analysis provided stress-strain curves for each specimen. The elastic moduli of longitudinal and transverse specimens were 515 2 277 and 1.82 f 2.93 MPa, respectively. The tensile strength and ultimate strain of longitudinal and transverse specimens were 54.1 f 25.2 and 0.18 ? 0.20 and 16 2 50/0 and 34 ? 32'K, respectively. The bi-directional mechanical properties of the IOL compared well with those published for the medial collateral ligament of the knee. The mechanical properties in the longitudinal direction were much greater than those in the transverse direction, which is indicative of the IOL's role in resisting longitudinal loading. The results of this study can be used to generate mathematical models of stress and strain in the IOL.

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“…10,14 The maximum load applied was 134 N. All testing was performed with the wrist in neutral position with regard to supination and pronation. This was established by aligning the plane of the 3 potted metacarpals with the flexion-extension plane of the elbow.…”

Section: Methodsmentioning

confidence: 99%

“…Further details of the test methodology can be found in our prior publication. 14 The radial head was exposed through the posterolateral approach described by Kocher; the proximal radioulnar joint ligament (annular ligament) was preserved. 15 The radial head was excised using a saw cut made at the base of the radial head at the junction with the radial neck; the cut was oriented perpendicular to the long axis of the radius.…”

Section: Methodsmentioning

confidence: 99%

Reconstruction of the interosseous membrane of the forearm with a graft substitute: A cadaveric study

Tejwani

Markolf

Benhaim

2005

The Journal of Hand Surgery

Self Cite

View full text Add to dashboard Cite

Effects of Radial Head Excision and Distal Radial Shortening on Load-Sharing in Cadaver Forearms

Cited by 67 publications

References 10 publications

Graft reconstruction of the interosseous membrane in conjunction with metallic radial head replacement: A cadaveric study

Graft reconstruction of the interosseous membrane in conjunction with metallic radial head replacement: A cadaveric study

Bi-directional mechanical properties of the human forearm interosseous ligament

Reconstruction of the interosseous membrane of the forearm with a graft substitute: A cadaveric study

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