Radioulnar Joint

14,000,000 Leading Edge Experts on the ideXlab platform

Scan Science and Technology

Contact Leading Edge Experts & Companies

Scan Science and Technology

Contact Leading Edge Experts & Companies

The Experts below are selected from a list of 5772 Experts worldwide ranked by ideXlab platform

Philip E Blazar - One of the best experts on this subject based on the ideXlab platform.

  • ulnar styloid fractures associated with distal radius fractures incidence and implications for distal Radioulnar Joint instability
    Journal of Hand Surgery (European Volume), 2002
    Co-Authors: Megan M May, Jeffrey N Lawton, Philip E Blazar
    Abstract:

    Ulnar-sided injuries of the wrist have received more attention recently for their potential negative impact on the outcome of distal radius fractures. Radiographs and medical records were retrospectively reviewed for 166 distal radius fractures treated during a 1-year interval. Distal radius fractures were classified according to the AO system, and accompanying ulnar styloid fractures were evaluated for both size and displacement. Each distal radius fracture was also evaluated for radiographic and clinical evidence of distal Radioulnar Joint instability. The distribution of ulnar styloid fractures was not random; greater than one third involved the base. All distal radius fractures complicated by distal Radioulnar Joint instability were accompanied by an ulnar styloid fracture. A fracture at the ulnar styloid's base and significant displacement of an ulnar styloid fracture were found to increase the risk of distal Radioulnar Joint instability.

  • ulnar styloid fractures associated with distal radius fractures incidence and implications for distal Radioulnar Joint instability
    Journal of Hand Surgery (European Volume), 2002
    Co-Authors: Jeffrey N Lawton, Philip E Blazar
    Abstract:

    Abstract Ulnar-sided injuries of the wrist have received more attention recently for their potential negative impact on the outcome of distal radius fractures. Radiographs and medical records were retrospectively reviewed for 166 distal radius fractures treated during a 1-year interval. Distal radius fractures were classified according to the AO system, and accompanying ulnar styloid fractures were evaluated for both size and displacement. Each distal radius fracture was also evaluated for radiographic and clinical evidence of distal Radioulnar Joint instability. The distribution of ulnar styloid fractures was not random; greater than one third involved the base. All distal radius fractures complicated by distal Radioulnar Joint instability were accompanied by an ulnar styloid fracture. A fracture at the ulnar styloid's base and significant displacement of an ulnar styloid fracture were found to increase the risk of distal Radioulnar Joint instability. (J Hand Surg 2002;27A:965-971. Copyright © 2002 by the American Society for Surgery of the Hand.)

Marco Rizzo - One of the best experts on this subject based on the ideXlab platform.

  • sauve kapandji remains a viable option for distal Radioulnar Joint dysfunction
    Hand, 2020
    Co-Authors: Nicholas Munaretto, Steven L. Moran, William R Aibinder, Marco Rizzo
    Abstract:

    IntroductionDysfunction of the distal Radioulnar Joint (DRUJ) can be significantly debilitating. The Sauve-Kapandji (S-K) procedure can be indicated to address multiple etiologies of DRUJ dysfuncti...

  • the stabilizing effect of the distal interosseous membrane on the distal Radioulnar Joint in an ulnar shortening procedure a biomechanical study
    Journal of Bone and Joint Surgery American Volume, 2011
    Co-Authors: Sayuri Arimitsu, Hisao Moritomo, Takashi Kitamura, Lawrence J Berglund, Kristin D Zhao, Marco Rizzo
    Abstract:

    Background: The importance of the stabilizing effect of the distal interosseous membrane on the distal Radioulnar Joint, especially in patients with a distal oblique bundle, has been described. The purpose of this study was to evaluate the stability of the distal Radioulnar Joint after an ulnar shortening osteotomy and to quantify longitudinal resistance to ulnar shortening when the osteotomy was proximal or distal to the ulnar attachment of the distal interosseous membrane. These relationships were characterized for forearms with or without a distal oblique bundle. Methods: Ten fresh-frozen cadavers were used. A transverse osteotomy and ulnar shortening was performed proximal (proximal shortening) and distal (distal shortening) to the ulnar attachment of the distal interosseous membrane. Distal Radioulnar Joint laxity was evaluated as the volar and dorsal displacements of the radius relative to the fixed ulna with 20 N of applied force. Testing was performed under controlled 1-mm increments of ulnar shortening up to 4 mm, with the forearm in neutral alignment, 60° of pronation, and 60° of supination. Resistance to ulnar shortening was quantified as the slope of the load-displacement curve obtained by displacing the distal ulnar segment proximally. Results: In proximal shortening, significantly greater stability of the distal Radioulnar Joint was obtained with even 1 mm of shortening compared with the control, whereas distal shortening demonstrated significant improvement in stability of the distal Radioulnar Joint only after shortening of ≥4 mm in all rotational positions. Significantly greater stability of the distal Radioulnar Joint was achieved with proximal shortening than with distal shortening and in specimens with a distal oblique bundle than in those without a distal oblique bundle. The longitudinal resistance to ulnar shortening was significantly greater in proximal shortening than in distal shortening. The stiffness in proximal shortening was not affected by the presence of a distal oblique bundle in the distal interosseous membrane. Conclusions: Ulnar shortening with the osteotomy carried out proximal to the attachment of the distal interosseous membrane had a more favorable effect on stability of the distal Radioulnar Joint compared with distal osteotomy, especially in the presence of a distal oblique bundle. Clinical Relevance: When ulnar shortening osteotomy is performed, there is a stabilizing effect on the distal Radioulnar Joint because of increased tensioning of the distal interosseous membrane.

Jeffrey N Lawton - One of the best experts on this subject based on the ideXlab platform.

  • ulnar styloid fractures associated with distal radius fractures incidence and implications for distal Radioulnar Joint instability
    Journal of Hand Surgery (European Volume), 2002
    Co-Authors: Megan M May, Jeffrey N Lawton, Philip E Blazar
    Abstract:

    Ulnar-sided injuries of the wrist have received more attention recently for their potential negative impact on the outcome of distal radius fractures. Radiographs and medical records were retrospectively reviewed for 166 distal radius fractures treated during a 1-year interval. Distal radius fractures were classified according to the AO system, and accompanying ulnar styloid fractures were evaluated for both size and displacement. Each distal radius fracture was also evaluated for radiographic and clinical evidence of distal Radioulnar Joint instability. The distribution of ulnar styloid fractures was not random; greater than one third involved the base. All distal radius fractures complicated by distal Radioulnar Joint instability were accompanied by an ulnar styloid fracture. A fracture at the ulnar styloid's base and significant displacement of an ulnar styloid fracture were found to increase the risk of distal Radioulnar Joint instability.

  • ulnar styloid fractures associated with distal radius fractures incidence and implications for distal Radioulnar Joint instability
    Journal of Hand Surgery (European Volume), 2002
    Co-Authors: Jeffrey N Lawton, Philip E Blazar
    Abstract:

    Abstract Ulnar-sided injuries of the wrist have received more attention recently for their potential negative impact on the outcome of distal radius fractures. Radiographs and medical records were retrospectively reviewed for 166 distal radius fractures treated during a 1-year interval. Distal radius fractures were classified according to the AO system, and accompanying ulnar styloid fractures were evaluated for both size and displacement. Each distal radius fracture was also evaluated for radiographic and clinical evidence of distal Radioulnar Joint instability. The distribution of ulnar styloid fractures was not random; greater than one third involved the base. All distal radius fractures complicated by distal Radioulnar Joint instability were accompanied by an ulnar styloid fracture. A fracture at the ulnar styloid's base and significant displacement of an ulnar styloid fracture were found to increase the risk of distal Radioulnar Joint instability. (J Hand Surg 2002;27A:965-971. Copyright © 2002 by the American Society for Surgery of the Hand.)

Richard A. Berger - One of the best experts on this subject based on the ideXlab platform.

  • Distal Radioulnar Joint: functional anatomy, including pathomechanics.
    The Journal of hand surgery European volume, 2017
    Co-Authors: J R Haugstvedt, M F Langer, Richard A. Berger
    Abstract:

    The distal Radioulnar Joint allows the human to rotate the forearm to place the hand in a desired position to perform different tasks, without interfering with the grasping function of the hand. The ulna is the stable part of the forearm around which the radius rotates; the stability of the distal Radioulnar Joint is provided by the interaction between ligaments, muscles and bones. The stabilizing structures are the triangular fibrocartilage complex, the ulnocarpal ligament complex, the extensor carpi ulnaris tendon and tendon sheath, the pronator quadratus, the interosseous membrane and ligament, the bone itself and the Joint capsule. The purpose of this review article is to present and illustrate the current understanding of the functional anatomy and pathomechanics of this Joint.

  • Disorders of the distal Radioulnar Joint.
    Plastic and reconstructive surgery, 2015
    Co-Authors: Matthew T. Houdek, Eric R. Wagner, Steven L. Moran, Richard A. Berger
    Abstract:

    The distal Radioulnar Joint is responsible for stable forearm rotation. Injury to this Joint can occur following a variety of mechanisms, including wrist fractures, ligamentous damage, or degenerative wear. Accurate diagnosis requires a clear understanding of the anatomy and mechanics of the ulnar aspect of the wrist. Injuries can be divided into three major categories for diagnostic purposes, and these include pain without Joint instability, pain with Joint instability, and Joint arthritis. New advancements in imaging and surgical technique can allow for earlier detection of injuries, potentially preserving Joint function. In this article, the authors review the pertinent anatomy, biomechanics, and major abnormality involving the distal Radioulnar Joint.

  • Linked distal Radioulnar Joint arthroplasty: an analysis of the APTIS prosthesis.
    The Journal of hand surgery European volume, 2014
    Co-Authors: Sanjeev Kakar, Eric R. Wagner, Tyler J. Fox, Richard A. Berger
    Abstract:

    Painful Radioulnar convergence following resection of the distal ulna can produce substantial disability and prove a challenging surgical problem, particularly in the revision setting. The purpose of this study was to evaluate the outcome of a series of patients with chronic distal Radioulnar Joint instability or multiple prior procedures treated with linked distal Radioulnar Joint arthroplasty with the APTIS prosthesis. A series of ten patients were identified with a mean follow up of 4.0 years. At final follow-up nine of ten implants survived free from revision or removal, with patients experiencing good pain relief and functional outcomes, with reasonable overall satisfaction in all seven patients who returned the questionnaires. Despite the medium-term follow-up and small number of patients, our results suggest the linked distal Radioulnar Joint arthroplasty may be a viable option for treating painful Radioulnar convergence following multiple failed procedures at the distal Radioulnar Joint.

Brian D. Adams - One of the best experts on this subject based on the ideXlab platform.

  • Non-constrained implant arthroplasty for the distal Radioulnar Joint.
    The Journal of hand surgery European volume, 2017
    Co-Authors: Brian D. Adams, J. L. Gaffey
    Abstract:

    A variety of surgical techniques are used to treat the arthritic distal Radioulnar Joint, which is influenced by aetiology and previous procedures. Four types of ulnar head arthroplasty exist: total ulnar head, partial ulnar head, unlinked total distal Radioulnar Joint, and linked distal Radioulnar Joint. Although long-term outcome studies are sparse, short-term clinical and biomechanical studies have shown encouraging results, leading to expanded indications. Based on our experience and a literature review, patients are advised that pain is improved but minor pain is common after strenuous activity. Ulnar neck resorption is common, however, implant loosening is rare. Sigmoid notch erosion is concerning, but appears to stabilize and not affect outcome. A partial ulnar head replacement that retains bony architecture and soft tissue restraints may have benefit over a total ulnar head in appropriate patients. If appropriate selection criteria are met, ulnar head replacement typically produces reliable results, with low revision.

  • Reconstruction of the posttraumatic unstable distal Radioulnar Joint.
    The Orthopedic clinics of North America, 2001
    Co-Authors: Brian D. Adams, Brian J. Divelbiss
    Abstract:

    Although not a common problem, the posttraumatic unstable distal Radioulnar Joint can be difficult to treat. This article focuses on the various methods for reconstruction of the unstable distal Radioulnar Joint. Attention focuses specifically on anatomic reconstruction of distal Radioulnar ligaments. The authors' technique is presented in detail.

  • Effects of radial deformity on distal Radioulnar Joint mechanics.
    The Journal of hand surgery, 1993
    Co-Authors: Brian D. Adams
    Abstract:

    A cadaver experiment was performed to study the effects of radial deformity on the kinematics of the distal Radioulnar Joint and the anatomic configuration of the triangular fibrocartilage. Radial shortening caused the greatest disturbance in kinematics and the most distortion of the triangular fibrocartilage. Decreased radial inclination and dorsal angulation caused intermediate changes. Dorsal displacement produced minimal changes. Radial deformity did not produce distal Radioulnar Joint dislocation. These results provide biomechanical evidence of an important relationship between radial malunion and persistent symptoms in the distal Radioulnar Joint.