The superior intracapsular ligament of the sacroiliac joint: presumptive evidence for confirmation of Illi's ligament.
The existence of a superior intracapsular ligament within the sacroiliac joint has been disputed for years. This study notes that the dissection technique used to open the sacroiliac joint is of critical importance in finding this ligament. A dissection technique that emphasizes an inferior approach to the joint cavity is described. A superior intracapsular ligament of the sacroiliac joint (Illi's ligament) is noted with a 75% frequency in dissected cadavers. Illi's model for motion of the sacrum was based partially on the function of this ligament. The findings of this study suggest that current models of motion at the sacroiliac joint must include the presence of a superior intracapsular ligament.
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MD
Freeman
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D
Fox
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T
Richards
D000886:Anthropometry; D001696:Biomechanical Phenomena; D004210:Dissection / Q000379:methods*; D006801:Humans; D007085:Ilium / Q000033:anatomy & histology; D008023:Ligaments, Articular / Q000033:anatomy & histology* / Q000502:physiology; D012446:Sacroiliac Joint / Q000033:anatomy & histology* / Q000502:physiology