Sensory innervation of the subregions of the scapholunate interosseous ligament in relation to their structural composition
Φόρτωση...
Ημερομηνία
Συγγραφείς
Mataliotakis, G.
Doukas, M.
Kostas, I.
Lykissas, M.
Batistatou, A.
Beris, A.
Τίτλος Εφημερίδας
Περιοδικό ISSN
Τίτλος τόμου
Εκδότης
Περίληψη
Τύπος
Είδος δημοσίευσης σε συνέδριο
Είδος περιοδικού
peer-reviewed
Είδος εκπαιδευτικού υλικού
Όνομα συνεδρίου
Όνομα περιοδικού
J Hand Surg Am
Όνομα βιβλίου
Σειρά βιβλίου
Έκδοση βιβλίου
Συμπληρωματικός/δευτερεύων τίτλος
Περιγραφή
PURPOSE: To investigate the different types of innervation and the presence of mechanoreceptors in relation to the structural composition of the scapholunate interosseous ligament and to correlate the findings with the known mechanical properties of the ligament subregions. METHODS: Six fresh cadaveric scapholunate interosseous ligaments were divided into their 3 subregions: dorsal, palmar, and proximal. The microscopic features were investigated with use of a standard hematoxylin-eosin stain and immunostains for S-100, neurofilaments, neuron-specific enolase, protein gene product 9.5, CD31, and smooth muscle actin. The connective tissue structural composition and the presence of blood vessels and neural structures (myelinated and unmyelinated nerve fibers and mechanoreceptors) were investigated. The macroscopic anatomic details were also noted. RESULTS: The palmar subregion consists of structured, densely collagenized tissue at the core, surrounded by looser connective tissue. Myelinated nerve fibers forming fascicles accompany the interspersed blood vessels inside the ligament substance. Their concentration is greater in the proximal part of the palmar subregion, reaching a distance of approximately 150 mum from the ligament free surface. The dorsal subregion has similar structure to the palmar one, but the fibrous tissue ratio and density are higher. The proximal subregion consists of chondroid matrix and of loose connective tissue at its core. The radio-scapholunate ligament insertion is noted at the palmar aspect of the proximal subregion. Pacinian and other sensory corpuscles were found mostly at the palmar and proximal subregions. CONCLUSIONS: The scapholunate interosseous ligament is a richly innervated ligament that contributes to carpal proprioception, a fundamental element of dynamic wrist stability. The palmar subregion, apart from its major mechanical role, contains the greatest amount of the neural structures and mechanoreceptors. The dorsal subregion, with densely packed collagen fibers and limited innervation, functions mainly to constrain the scaphoid-lunate relative motion.
Περιγραφή
Λέξεις-κλειδιά
Actins/analysis, Antigens, CD31/analysis, Connective Tissue, Female, Humans, Ligaments, Articular/anatomy & histology/*innervation, Lunate Bone/anatomy & histology/*innervation, Male, Mechanoreceptors/*ultrasonography, Middle Aged, Nerve Fibers/ultrasonography, Nerve Fibers, Myelinated/ultrasonography, Neurofilament Proteins/analysis, Pacinian Corpuscles, Phosphopyruvate Hydratase/analysis, Proprioception/physiology, Range of Motion, Articular/physiology, S100 Proteins/analysis, Scaphoid Bone/anatomy & histology/*innervation
Θεματική κατηγορία
Παραπομπή
Σύνδεσμος
http://www.ncbi.nlm.nih.gov/pubmed/19683877
http://ac.els-cdn.com/S0363502309004456/1-s2.0-S0363502309004456-main.pdf?_tid=e5f1623bd62f5b0755f9036af472ef9a&acdnat=1333348583_2a542bbeb9eee5cfb90a9af1ed5269b9
http://ac.els-cdn.com/S0363502309004456/1-s2.0-S0363502309004456-main.pdf?_tid=e5f1623bd62f5b0755f9036af472ef9a&acdnat=1333348583_2a542bbeb9eee5cfb90a9af1ed5269b9
Γλώσσα
en
Εκδίδον τμήμα/τομέας
Όνομα επιβλέποντος
Εξεταστική επιτροπή
Γενική Περιγραφή / Σχόλια
Ίδρυμα και Σχολή/Τμήμα του υποβάλλοντος
Πανεπιστήμιο Ιωαννίνων. Σχολή Επιστημών Υγείας. Τμήμα Ιατρικής