What is sacral dysmorphism?
Sacral dysmorphism was defined by the presence of the following 5 signs: (1) mammillary bodies (underdeveloped residual transverse processes at the sacral alae); (2) tongue-in-groove morphology [increased irregular shape of the sacroiliac joint (SIJ) surface]; (3) colinearity (nonrecessed sacrum within the pelvis with …
What is a sacral screw?
Sacroiliac screw fixation is a commonly used procedure for iliosacral joint fracture-dislocations and sacral fractures. Currently, the standard technique is the percutaneous iliosacral screw fixation under conventional C-arm fluoroscopy that often exposes the patient to prolonged radiation.
How do you treat a cracked sacrum?
Sacral fractures can be treated non-operatively or surgically. Non-operative treatment is based on rest, pain relief therapy and early mobilization as tolerated. Surgical techniques can be split into two main groups: posterior pelvic fixation techniques and lumbopelvic fixation techniques.
What is the iliac cortical density?
The iliac cortical density (ICD) is a critical fluoroscopic landmark for pelvic percutaneous screw placement. Our purpose was to evaluate the ICD as a landmark in pediatrics, and quantify the diameter of osseous pathways for three screw trajectories: Iliosacral (IS) at S1 and transiliac-transsacral (TSTI) at S1 and S2.
What is an SI screw?
Introduction. Iliosacral screw (ISS) fixation is a fluoroscopically guided, percutaneous procedure. Its primary use is for fixation of satisfactorily reduced sacro-iliac joint disruptions or sacral fractures (described in a separate procedure).
Where is the sacral ala?
The ala of sacrum is the upper part of the lateral part of sacrum, lateral to the first sacral vertebra. It is a large triangular surface, which supports the Psoas major and the lumbosacral trunk, and in the articulated pelvis is continuous with the iliac fossa.
What is the difference between sacroiliac and Iliosacral?
The right and left sacroiliac joints/iliosacral joints form the moveable connection between the sacral bone (os sacrum) and the ilium (os ilium). The sacroiliac joint is a tight joint that is not very mobile and has a close-fitting joint cavity.
What is a sacral alar fracture?
A sacral fracture occurs when a bone called the sacrum breaks. The sacrum is a large triangular bone at the bottom of the spine. It fits like a wedge between the two hip bones. The sacrum is made up of the sacral vertebrae, which are fused together. Sometimes the coccyx, or tailbone, is fractured along with the sacrum.
Which is an anatomic determinant of sacral dysmorphism?
Sacral dysmorphism was found in 41% of the pelves. The major determinants of sacral dysmorphism are upper sacral segment coronal and axial angulation. The sacral dysmorphism score quantifies dysmorphism and can be used in preoperative planning of iliosacral screw placement. Sacral dysmorphism was found in 41% of the pelves.
What are the surgical implications of lumbosacral dysmorphism?
Surgical Implications: Understanding abnormal lumbosacral anatomy is crucial for preoperative planning of SIJ fusion, spine deformity, and pelvic trauma surgery. LSTV can alter spinopelvic parameters crucial in planning spine deformity correction.
How is abnormal lumbosacral anatomy related to LBP?
Abnormal lumbosacral anatomy plays a significant role in clinical evaluation of LBP and surgical planning in SIJ fusion, spine deformity, and pelvic trauma. Further studies evaluating the influence of abnormal lumbosacral anatomy on LBP and surgical technique would help guide treatment for these patients.