Extra-articular Portion of the Sacroiliac Joint-Between the Sacral and Pelvic Tuberosities: An Anatomical Guide for the S2-Alar-Iliac Screw Trajectory

التفاصيل البيبلوغرافية
العنوان: Extra-articular Portion of the Sacroiliac Joint-Between the Sacral and Pelvic Tuberosities: An Anatomical Guide for the S2-Alar-Iliac Screw Trajectory
المؤلفون: Hisanori Mihara, Yasunori Tatara, Tatsuhiro Sekiya, Takanori Niimura
المصدر: Global Spine Journal
سنة النشر: 2020
مصطلحات موضوعية: Novel technique, 030218 nuclear medicine & medical imaging, Screw placement, free-hand, 03 medical and health sciences, 0302 clinical medicine, spinal deformity, Medicine, Pelvic fixation, Orthopedics and Sports Medicine, navigation, Orthodontics, Sacroiliac joint, business.industry, Original Articles, spinopelvic fixation, medicine.anatomical_structure, Iliac screw, Trajectory, Spinal deformity, Surgery, lumbosacral transitional vertebra, Neurology (clinical), business, 030217 neurology & neurosurgery, S2AI screw
الوصف: Study Design: A novel technique for S2-alar-iliac (S2AI) screw placement was analyzed. Objectives: Accurate confirmation of the S2AI screw trajectory with free-hand techniques is not simple, although some anatomical landmarks have been reported. To overcome the drawback, we aimed to introduce our technique for S2AI screw placement assisted with a guidewire using a new anatomical landmark. Methods: A total of 104 S2AI screws of 52 patients who underwent S2AI screw placement were investigated. Navigation software was used to simulate S2AI screw placement preoperatively. Screw placement was performed with the nonfluoroscopic free-hand technique. In this technique, a guidewire is inserted into the ilium from the extra-articular portion of the sacroiliac joint just lateral to the ideal screw entry point toward the tip of the greater trochanter and guides the screw trajectory. If the direction of the guidewire is satisfactory, all procedures of screw insertion are performed accordingly. The screw accuracy was assessed with computed tomography. Results: The modal size of the screw was 9.5 mm × 90 mm. The average horizontal angle was 42.0° (SD = 5.1°) on the right and 40.7° (SD = 4.7°) on the left. Of the 104 screws, 4 screws (3.9%) breached dorsally. No screw-related complication was observed. Conclusions: Because the guidewire can be inserted at an angle according to the individual morphology of the sacroiliac joint, it will be a reliable guide for the screw trajectory. This technique with a guidewire would help improve the accuracy of S2AI screw placement.
تدمد: 2192-5682
URL الوصول: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::de8b12538f5fabd4b8852e803c7afb8f
https://pubmed.ncbi.nlm.nih.gov/32875863
Rights: OPEN
رقم الانضمام: edsair.doi.dedup.....de8b12538f5fabd4b8852e803c7afb8f
قاعدة البيانات: OpenAIRE