| In Vivo Analysis of Coracoclavicular Ligament Kinematics During Shoulder Abduction. | |
| | |
MedLine Citation:
|
PMID: 21969179 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
|
BACKGROUND: Anatomic reconstruction of the coracoclavicular ligaments for the treatment of acromioclavicular joint separations provides superior biomechanical stability compared with other procedures. Clavicular and coracoidal footprints of the conoid ligament (CL) and the trapezoid ligament (TL) are well described. So far, little is known about their kinematics and the changes of the coracoclavicular distance during shoulder abduction. HYPOTHESIS: The coracoclavicular distance along the coracoclavicular ligaments changes significantly with shoulder abduction and weightbearing. STUDY DESIGN: Descriptive laboratory study. METHODS: With use of an open magnetic resonance imaging scanner, the shoulders of 13 healthy volunteers were examined in supine and sitting positions. Three-dimensional magnetic resonance images of the shoulders were obtained in 30° increments of abduction (0°-120°). A manual segmentation of the scapula, the clavicle, and the coracoclavicular ligaments was performed. The insertion points of the coracoclavicular ligaments were identified, and automated measures along the ligamentous course were carried out. RESULTS: During transfer from the lying to sitting position, the coracoclavicular distance showed significant lengthening of 3 mm along the center of the CL, which significantly increased another 3 mm during shoulder abduction to a total lengthening of 6 mm. In the supine position, the coracoclavicular distance along the TL did not elongate significantly. In the sitting position, the distance along the medial portion of the TL shortened significantly, whereas the distance along the center portion did not elongate significantly during shoulder abduction. CONCLUSION: The distances between the coracoclavicular insertion points depend on both patient and shoulder positioning. To prevent overconstraining of the graft, the CL should be fixated during 90° to 120° of shoulder abduction in a sitting position. Isometric reconstruction of the TL can be achieved if precise fixation of the graft at the centers of the conoidal and clavicular footprints is performed. |
| | |
Authors:
|
Kaywan Izadpanah; Elizabeth Weitzel; Matthias Honal; Jan Winterer; Marco Vicari; Dirk Maier; Martin Jaeger; Elmar Kotter; Jürgen Hennig; Matthias Weigel; Norbert P Südkamp |
Related Documents
:
|
9279149 - Diffusion weighted magnetic resonance imaging of compromised tissue in stroke. 15050569 - Trace of diffusion tensor differentiates the parkinson variant of multiple system atrop... 18632649 - New insights into tumor microstructure using temporal diffusion spectroscopy. 20556599 - The appearance of adcs in the non-affected areas of the patients with melas. 18762519 - Occipital lobe injury and cortical visual outcomes after neonatal hypoglycemia. 17729009 - Diffusion-weighted magnetic resonance imaging of cerebrospinal fluid in patients with a... 21094959 - Serial diffusion-weighted mri and spect findings in a creutzfeldt-jakob disease patient... 9377519 - Uncommon locations of hydatid disease: ct appearances. 10337889 - Helical ct in the evaluation of renal colic. |
Publication Detail:
|
Type: JOURNAL ARTICLE Date: 2011-10-3 |
Journal Detail:
|
Title: The American journal of sports medicine Volume: - ISSN: 1552-3365 ISO Abbreviation: - Publication Date: 2011 Oct |
Date Detail:
|
Created Date: 2011-10-4 Completed Date: - Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 7609541 Medline TA: Am J Sports Med Country: - |
Other Details:
|
Languages: ENG Pagination: - Citation Subset: - |
Affiliation:
|
Department of Orthopaedic and Trauma Surgery, University Hospital Freiburg, Freiburg, Germany. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
|
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Exosome/microvesicle-mediated epigenetic reprogramming of cells.
Next Document: Autologous Chondrocyte Implantation for Treatment of Cartilage Defects of the Knee: What Predicts th...