Radial Styloid Process

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Reid A. Abrams - One of the best experts on this subject based on the ideXlab platform.

  • anatomical considerations regarding the posterior interosseous nerve during posterolateral approaches to the proximal part of the radius
    Journal of Bone and Joint Surgery American Volume, 2000
    Co-Authors: Thomas Diliberti, Michael J Botte, Reid A. Abrams
    Abstract:

    Background: The purpose of our study was to quantify the dimensions of a surgically safe zone along the proximal part of the radius, from the posterolateral aspect. Methods: The posterolateral approach between the anconeus and the extensor carpi ulnaris was performed in thirty-two cadaveric specimens, and the posterior interosseous nerve was exposed. Forearms were measured from the Radial Styloid Process to the radiocapitellar joint. The distance from the capitellum to the point where the posterior interosseous nerve crossed the Radial shaft and the angle between the nerve and the shaft were measured with forearms in pronation and supination. Results: Pronation of the forearm allowed safe exposure of at least the proximal thirty-eight millimeters of the lateral aspect of the radius, with an average proximal safe zone of 52.0 ± 7.8 millimeters. Supination decreased this proximal safe zone to as little as twenty-two millimeters and an average of 33.4 ± 5.7 millimeters. The angle formed by the posterior interosseous nerve and the Radial shaft in supination averaged 47.4 6.8 degrees; this decreased to 27.8 ± 6.7 degrees with pronation. Conclusions: Approaching the lateral aspect of the proximal part of the radius is safest in pronation.

Thomas Diliberti - One of the best experts on this subject based on the ideXlab platform.

  • anatomical considerations regarding the posterior interosseous nerve during posterolateral approaches to the proximal part of the radius
    Journal of Bone and Joint Surgery American Volume, 2000
    Co-Authors: Thomas Diliberti, Michael J Botte, Reid A. Abrams
    Abstract:

    Background: The purpose of our study was to quantify the dimensions of a surgically safe zone along the proximal part of the radius, from the posterolateral aspect. Methods: The posterolateral approach between the anconeus and the extensor carpi ulnaris was performed in thirty-two cadaveric specimens, and the posterior interosseous nerve was exposed. Forearms were measured from the Radial Styloid Process to the radiocapitellar joint. The distance from the capitellum to the point where the posterior interosseous nerve crossed the Radial shaft and the angle between the nerve and the shaft were measured with forearms in pronation and supination. Results: Pronation of the forearm allowed safe exposure of at least the proximal thirty-eight millimeters of the lateral aspect of the radius, with an average proximal safe zone of 52.0 ± 7.8 millimeters. Supination decreased this proximal safe zone to as little as twenty-two millimeters and an average of 33.4 ± 5.7 millimeters. The angle formed by the posterior interosseous nerve and the Radial shaft in supination averaged 47.4 6.8 degrees; this decreased to 27.8 ± 6.7 degrees with pronation. Conclusions: Approaching the lateral aspect of the proximal part of the radius is safest in pronation.

Pau Forcada - One of the best experts on this subject based on the ideXlab platform.

  • Intraosseous Vascularity of the Distal Radius: Anatomy and Clinical Implications in Distal Radius Fractures
    Hand, 2009
    Co-Authors: Claudia Lamas, Ignacio Proubasta, Manuel Llusa, Ana Carrera, Ana Mendez, Pau Forcada
    Abstract:

    This study aimed to describe the intraosseous blood supply of the distal radius and its clinical implications in distal radius fractures. Twelve adult wrists from fresh cadavers (six males, six females, 50–90 years of age, mean 68 years) were injected through the brachial artery with latex. Dissections were performed using magnifying loupes and hands were Processed using the Spalteholz technique. The distal radius was supplied by three main vascular systems: epiphyseal, metaphyseal, and diaphyseal. The palmar epiphyseal vessels branched from the Radial artery, palmar carpal arch, and anterior branch of the anterior interosseous artery. These vessels entered the bone through the Radial Styloid Process at level of the Lister's tubercle but palmar and sigmoid notch. The dorsal contribution to Lister's tubercle is to the dorsal epiphyseal vessels. The intraosseous point of entry to the dorsal epiphyseal vessels was from the fourth and fifth extensor compartment arteries. In the metaphyseal area, we found numerous periosteal and cortical branches originating deep in the pronator quadratus and the anterior interosseous artery. These branches provided the main supply to the distal radius. Vessels perforated the bone and formed an anastomotic network. In the diaphyseal area, only the nutrient vessel provided intraosseous vascularity in the distal radius. Numerous metaphyseal–epiphyseal branches arise within the pronator quadratus and the anterior interosseous artery and course towards the distal radius. These branches may be fundamental to the healing of the distal radius fractures and make nonunion a rare complication.

Michael J Botte - One of the best experts on this subject based on the ideXlab platform.

  • anatomical considerations regarding the posterior interosseous nerve during posterolateral approaches to the proximal part of the radius
    Journal of Bone and Joint Surgery American Volume, 2000
    Co-Authors: Thomas Diliberti, Michael J Botte, Reid A. Abrams
    Abstract:

    Background: The purpose of our study was to quantify the dimensions of a surgically safe zone along the proximal part of the radius, from the posterolateral aspect. Methods: The posterolateral approach between the anconeus and the extensor carpi ulnaris was performed in thirty-two cadaveric specimens, and the posterior interosseous nerve was exposed. Forearms were measured from the Radial Styloid Process to the radiocapitellar joint. The distance from the capitellum to the point where the posterior interosseous nerve crossed the Radial shaft and the angle between the nerve and the shaft were measured with forearms in pronation and supination. Results: Pronation of the forearm allowed safe exposure of at least the proximal thirty-eight millimeters of the lateral aspect of the radius, with an average proximal safe zone of 52.0 ± 7.8 millimeters. Supination decreased this proximal safe zone to as little as twenty-two millimeters and an average of 33.4 ± 5.7 millimeters. The angle formed by the posterior interosseous nerve and the Radial shaft in supination averaged 47.4 6.8 degrees; this decreased to 27.8 ± 6.7 degrees with pronation. Conclusions: Approaching the lateral aspect of the proximal part of the radius is safest in pronation.

Claudia Lamas - One of the best experts on this subject based on the ideXlab platform.

  • Intraosseous Vascularity of the Distal Radius: Anatomy and Clinical Implications in Distal Radius Fractures
    Hand, 2009
    Co-Authors: Claudia Lamas, Ignacio Proubasta, Manuel Llusa, Ana Carrera, Ana Mendez, Pau Forcada
    Abstract:

    This study aimed to describe the intraosseous blood supply of the distal radius and its clinical implications in distal radius fractures. Twelve adult wrists from fresh cadavers (six males, six females, 50–90 years of age, mean 68 years) were injected through the brachial artery with latex. Dissections were performed using magnifying loupes and hands were Processed using the Spalteholz technique. The distal radius was supplied by three main vascular systems: epiphyseal, metaphyseal, and diaphyseal. The palmar epiphyseal vessels branched from the Radial artery, palmar carpal arch, and anterior branch of the anterior interosseous artery. These vessels entered the bone through the Radial Styloid Process at level of the Lister's tubercle but palmar and sigmoid notch. The dorsal contribution to Lister's tubercle is to the dorsal epiphyseal vessels. The intraosseous point of entry to the dorsal epiphyseal vessels was from the fourth and fifth extensor compartment arteries. In the metaphyseal area, we found numerous periosteal and cortical branches originating deep in the pronator quadratus and the anterior interosseous artery. These branches provided the main supply to the distal radius. Vessels perforated the bone and formed an anastomotic network. In the diaphyseal area, only the nutrient vessel provided intraosseous vascularity in the distal radius. Numerous metaphyseal–epiphyseal branches arise within the pronator quadratus and the anterior interosseous artery and course towards the distal radius. These branches may be fundamental to the healing of the distal radius fractures and make nonunion a rare complication.