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Anatomy of the Pelvis
Published in Gowri Dorairajan, Management of Normal and High Risk Labour During Childbirth, 2022
Clinical anatomy of iliac crest The highest points of the two iliac crests, called the intercristal plane, lie at the fourth lumbar vertebra. Additionally, it marks the preferred site for lumbar puncture (L4-L5).The iliac crest is a common site for bone biopsy using a posterior superior iliac spine landmark.
Low Back Pain
Published in Benjamin Apichai, Chinese Medicine for Lower Body Pain, 2021
The following acupuncture points are commonly used for adding moxibustion: UB23 腎俞 Shenshu—this is to warm kidney Yang.臀中 Tun Zhong, GB30 環跳 Huangtiao, GB34 陽陵泉 Yanglingquan, and GB39 懸鐘 Xuanzhong are excellent local points for moxibustion.A cold-chasing method is good to consider as well. Gently heat up the urinary bladder meridians from UB36 承扶 Chengfu all the way down to UB40 委中 Weizhong until a red line appears.For pain and a cold sensation on the posterior superior iliac spine (PSIS) or sacral region, add a moxa box on the affected regions to eliminate cold and relieve pain.
Sacro-Iliac Joints – Postero-Anterior
Published in A Stewart Whitley, Charles Sloane, Gail Jefferson, Ken Holmes, Craig Anderson, Clark's Pocket Handbook for Radiographers, 2016
A Stewart Whitley, Charles Sloane, Gail Jefferson, Ken Holmes, Craig Anderson
The collimated vertical beam is centred in the midline at the level of the posterior superior iliac spines.The central ray is angled 5–15 degrees caudally from the vertical depending on the angulation of the patient’s sacrum, which is generally greater in females due to the natural increased L5/S1 lordosis.The primary beam is collimated to the area of interest.
Recommended maximum holding time of common static sitting postures of office workers
Published in International Journal of Occupational Safety and Ergonomics, 2023
Somayeh Tahernejad, Mohsen Razeghi, Mohammad Abdoli-Eramaki, Hossein Parsaei, Mozhgan Seif, Alireza Choobineh
To adjust the trunk angles, the participant was first asked to maintain his/her lower back (lumbar spine) in a neutral position so that the angle between the thigh and the trunk was approximately 90°. Then, a point was marked on the iliac crest extending from the anterior superior iliac spine (ASIS) to the posterior superior iliac spine (PSIS). The proximal arm was placed along the imaginary line from the marked point, perpendicular to the chair seat. The distal arm was then rotated to the desired angles, and the participant was asked to bend so that the marked point was below the distal arm. To adjust the trunk angle in the lateral flexion position, the proximal arm was placed between the spinous process of the 12th thoracic vertebra (T12) and the beginning of the sacral curve perpendicular to the chair seat. The distal arm was then rotated to the desired angle and the subject was asked to bend so that the marked point was under the distal arm [29,30]. The examined trunk postures are shown in Figure 3.
The design and application of an individualized 3D printing assisted guide plates in assisting sacroiliac screws insertion
Published in Computer Assisted Surgery, 2022
Mu-Rong You, Zhi-Qiang Fan, Hai-Min Ye, Zhe Wang, Chun-Hua Zou, Xie-Ping Dong
Next, we fixed the pelvic specimens on the operating table. In order to reduce the interference of human factors, the specimens were then covered with the hole towels to ensure that we could only observe the bilateral posterior superior iliac spine during the process of screws insertion. Subsequently, we placed the guide plate buckle on posterior superior iliac spine, so that it is in close contact with the posterior surface of the iliac bone. After confirming that the position of guide plates was positioned correctly and anchored firmly, the 2.5 mm Kirschner wires were drilled through hollow guide holes of the guide plates. A probe was used to further confirm the position and direction of the screw channel, and a hollow screw with a diameter of 7.3 mm was then screwed in after tapping. Each specimen underwent bilateral sacroiliac screws insertion, and a total of 48 screws were inserted (Figure 2(D)).
Neural regeneration therapy after spinal cord injury induces unique brain functional reorganizations in rhesus monkeys
Published in Annals of Medicine, 2022
Jia-Sheng Rao, Can Zhao, Rui-Han Wei, Ting Feng, Shu-Sheng Bao, Wen Zhao, Zhaolong Tian, Zuxiang Liu, Zhao-Yang Yang, Xiao-Guang Li
The hindlimb gait datasets of each animal were acquired by using a Vicon system (Vicon 8, Oxford Metrics Limited Company, UK). Gait test, data collection, processing and calculation were performed as previously described [39–42]. In brief, reflective markers were fixed on the anterior and posterior superior iliac spines, 2/3 of the femur, knee joint, tibia midpoint, ankle joint, heel and the second metatarsophalangeal joint in the right hindlimb. Eight infra-red cameras were used to record the three-dimensional position of the reflective markers during stepping. Animals were walking bipedally on a treadmill at a speed of 0.22 m s−1 (recording frequency: 100 Hz) while their upper body was restrained. At least 10 steps of each animal at each timepoint were obtained for subsequent processing and analysis. Gait cycle duration, stance duration, stride length, step height, swing endpoint velocity, hip joint flexion, hip joint extension, hip joint amplitude, knee joint flexion, knee joint extension, knee joint amplitude, ankle joint flexion, ankle joint extension and ankle joint amplitude were calculated by using Matlab (MathWorks, Natick, MA). Principal component analysis (PCA) was adopted to process the above gait parameters and reconstruct PCs 1–5 in a single gait cycle. The extent of the change in motor function is the sum of the square deviation (SSD) between the PC1–5 values of each animal at each timepoint post-SCI and the PC1–5 values of intact status.