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The dorsal or posterior sacrococcygeal ligament has a deep and a superficial part: The deep dorsal ligament is a flat band which corresponds to the posterior longitudinal ligament (PLL) that run down inside the vertebral canal on the posterior surfaces of the bodies of the vertebrae. From the posterior side of the fifth sacral body inside the ...
The deep dorsal sacrococcygeal ligament (ligamentum sacrococcygeum posterius profundum) is a continuation of the posterior longitudinal ligament. [1] A flat band arising inside the sacral canal, posteriorly at the orifice of the fifth sacral segment, it descends to the dorsal surface of the coccyx under its longer fellow described below. [3]
In the human body, the lateral sacrococcygeal ligament is a bilaterally paired ligament extending between the transverse process coccyx, and the inferolateral angle of the sacrum. [1] The ligament forms a foramen for [2] [1] an anterior ramus [1] of the fifth sacral nerve (S5). [2] [1] The ligament may become ossified. [1]
The anterior sacrococcygeal ligament or ventral sacrococcygeal ligament consists of a few irregular fibers, which descend from the anterior surface of the sacrum to the front of the coccyx, blending with the periosteum.
The sacroiliac joint or SI joint (SIJ) is the joint between the sacrum and the ilium bones of the pelvis, which are connected by strong ligaments. In humans, the sacrum supports the spine and is supported in turn by an ilium on each side. The joint is strong, supporting the entire weight of the upper body.
Sacrococcygeal ligament can refer to: Anterior sacrococcygeal ligament (ligamentum sacrococcygeum anterius) Lateral sacrococcygeal ligament (ligamentum sacrococcygeum ...
The lowest fibres of gluteus maximus are attached to the posterior surface of the ligament; superficial fibres of the lower part of the ligament continue into the tendon of biceps femoris. The ligament is pierced by the coccygeal branches of the inferior gluteal artery, the perforating cutaneous nerve and filaments of the coccygeal plexus. [2]
Inferiorly, it becomes continuous with the anterior sacrococcygeal ligament. [3] Superiorly, between the skull and atlas, the ligament is continuous laterally with the anterior atlantooccipital membrane. [4] The ligament is thick and slightly more narrow over the vertebral bodies and thinner but slightly wider over the intervertebral discs. [5]