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https://www.readbyqxmd.com/read/28418950/sacral-fatigue-fracture-in-a-military-recruit
#1
Matthew D Burgess, Mickaila J Johnston, Eugene D Silverman
A 19-year-old male military recruit presented with 3 weeks of persistent left hip and groin pain after abnormally twisting his hip during a hike. Initial radiographs were interpreted as negative. He subsequently underwent a bone scan which revealed linear left sacral uptake along or paralleling the sacroiliac joint. Differential diagnostic considerations included unilateral sacroiliitis and sacral fracture. SPECT/CT was performed which confirmed left sacral fatigue stress fracture. Transitional lumbosacral anatomy was evident on radiographs with pseudoarticulation of the transitional left S1 transverse process with the sacrum...
April 17, 2017: Clinical Nuclear Medicine
https://www.readbyqxmd.com/read/28409128/the-use-of-bone-morphogenetic-proteins-bmp-and-pseudarthrosis-a-literature-review
#2
REVIEW
Oberdan Ribeiro Gonçalves de Oliveira, Saul Pinheiro Rebouças Martins, Wyvison Gomes de Lima, Marília Maia Gomes
Bone morphogenetic proteins (BMP) are multi-functional growth factors to promote bone healing with the proposal of less morbidity compared to the usual methods of bone graft harvest. Pseudoarthrosis occur when the fusion attempt fails, a solid fusion is not achieved, or there is motion across the segment leading to it, and it can be clinically symptomatic as pain, deformity, neurocompression, or hardware failure. BMPs are used at spinal fusion as a tool for the treatment of degenerative, traumatic, neoplastic and infectious conditions of the spine...
March 2017: Revista Brasileira de Ortopedia
https://www.readbyqxmd.com/read/28406567/evolution-of-spinopelvic-alignment-in-hominins
#3
Ella Been, Asier Gómez-Olivencia, Sara Shefi, Michalle Soudack, Markus Bastir, Alon Barash
Spinopelvic alignment refers to the interaction between pelvic orientation, spinal curvatures, and the line of gravity. In a healthy modern human, this alignment is characterized by reciprocal curves/orientation of the sacrum, lumbar lordosis, thoracic kyphosis, and cervical lordosis. In an economic sagittal posture, these curvatures keep the line of gravity close to the center of the acetabulum. The purpose of this study is to explore the spinopelvic alignment in extinct hominins. We examined spinopelvic alignment of a single representative from each of the following hominin groups: Australopithecus, Homo erectus (H...
May 2017: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
https://www.readbyqxmd.com/read/28400698/laparoscopic-rectopexy-with-urinary-bladder-xenograft-reinforcement
#4
Aradhana Mehta, Rami Afshar, David L Warner, Amy Gardner, Ellen Ackerman, Jared Brandt, Kent C Sasse
BACKGROUND AND OBJECTIVES: Rectal prolapse is often repaired laparoscopically, frequently with the use of reinforcement material. Both synthetic and biologically derived materials reduce recurrence rate compared to primary suture repair. Synthetic mesh introduces potential complications such as mesh erosion, fibrosis, and infection. Urinary bladder matrix (UBM) represents a biologically derived material for reinforcement of rectal prolapse repair with the potential to improve durability without risks of synthetic materials...
January 2017: JSLS: Journal of the Society of Laparoendoscopic Surgeons
https://www.readbyqxmd.com/read/28391395/biomechanical-analysis-of-anterior-ring-fixation-of-the-ramus-in-type-c-pelvis-fractures
#5
S McLachlin, M Lesieur, D Stephen, H Kreder, C Whyne
PURPOSE: This biomechanical study compared the stability of four different ramus fracture fixation methods for Type C pelvic ring injuries in the absence of posterior fixation. METHODS: A 5-mm vertical osteotomy of the mid-superior and inferior pubic ramus was created in 12 synthetic pelvic models. Four surgical constructs were compared: (1) two-pin AIIS external fixation, (2) 3.5-mm reconstruction plating, (3) bicortical, fully threaded 3.5-mm, and (4) 6.5-mm pubic ramus screws...
April 8, 2017: European Journal of Trauma and Emergency Surgery: Official Publication of the European Trauma Society
https://www.readbyqxmd.com/read/28384153/cartilage-formation-in-the-pelvic-skeleton-during-the-embryonic-and-early-fetal-period
#6
Misaki Okumura, Aoi Ishikawa, Tomoki Aoyama, Shigehito Yamada, Chigako Uwabe, Hirohiko Imai, Tetsuya Matsuda, Akio Yoneyama, Tohoru Takeda, Tetsuya Takakuwa
The pelvic skeleton is formed via endochondral ossification. However, it is not known how the normal cartilage is formed before ossification occurs. Furthermore, the overall timeline of cartilage formation and the morphology of the cartilage in the pelvis are unclear. In this study, cartilage formation in the pelvic skeletons of 25 human fetuses (crown-rump length [CRL] = 11.9-75.0 mm) was observed using phase-contrast computed tomography and 7T magnetic resonance imaging. The chondrification center of the ilium, ischium, and pubis first appeared simultaneously at Carnegie stage (CS) 18, was located around the acetabulum, and grew radially in the later stage...
2017: PloS One
https://www.readbyqxmd.com/read/28383441/radiological-analysis-for-thoracolumbar-disc-herniation-in-spinopelvic-sagittal-alignment-a-retrospective-study
#7
Tao Wang, Lei Ma, Da-Long Yang, Hui Wang, Di Zhang, Ying-Ze Zhang, Wen-Yuan Ding
A retrospective study aims to explore differences in spinopelvic sagittal alignment between thoracolumbar disc herniation (TLD) and lower lumbar disc herniation (LLD).A total of 185 patients included 26 with TLD and 129 with LLD and 30 asymptomatic volunteers in normal group (NG). Each individual took full spine X-ray to evaluate pelvic incidence (PI), pelvic tilt (PT), sacral slope (SS), lumbar lordosis (LL), thoracic kyphosis (TK), TK+LL+PI, TK/LL, and sacrum-femoral-pubic symphysis (SFP). The Roussouly classification was used to categorize all subjects according to their sagittal alignment...
April 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28377644/finite-element-analysis-of-sagittal-balance-in-different-morphotype-forces-and-resulting-strain-in-pelvis-and-spine
#8
REVIEW
Vincenzo Filardi, Portaro Simona, Giorgio Cacciola, Salvatore Bertino, Luigi Soliera, Andrea Barbanera, Alessandro Pisani, Demetrio Milardi, Bramanti Alessia
In humans, vertical posture acquisition caused several changes in bones and muscles which can be assumed as verticalization. Pelvis, femur, and vertebral column gain an extension position which decreases muscular work by paravertebral muscles in the latter. It's widely known that six different morphological categories exist; each category differs from the others by pelvic parameters and vertebral column curvatures. Both values depend on the Pelvic Incidence, calculated as the angle between the axes passing through the rotation centre of the two femur heads and the vertical axis passing through the superior plate of the sacrum...
June 2017: Journal of Orthopaedics
https://www.readbyqxmd.com/read/28373081/morphometry-of-the-sacrum-and-its-implication-on-trans-sacral-corridors-using-a-ct-data-based-3d-statistical-model
#9
Daniel Wagner, Lukas Kamer, Takeshi Sawaguchi, R Geoff Richards, Hansrudi Noser, Alexander Hofmann, Pol M Rommens
BACKGROUND CONTEXT: Trans-sacral implants are increasingly used to treat fractures of the sacrum, especially for osteoporosis-associated fragility fractures. However, the complex and highly variable sacral anatomy limits their use. It is still not clear which morphologic characteristics are critical to determine the availability and dimensions of trans-sacral corridors. PURPOSE: To assess sacral anatomy and its influence on trans-sacral corridors. STUDY DESIGN: CT-based 3D statistical size and shape model of the sacrum with multiple morphometric measurements...
March 31, 2017: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/28371662/do-kinematic-metrics-of-walking-balance-adapt-to-perturbed-optical-flow
#10
Jessica D Thompson, Jason R Franz
Visual (i.e., optical flow) perturbations can be used to study balance control and balance deficits. However, it remains unclear whether walking balance control adapts to such perturbations over time. Our purpose was to investigate the propensity for visuomotor adaptation in walking balance control using prolonged exposure to optical flow perturbations. Ten subjects (age: 25.4±3.8years) walked on a treadmill while watching a speed-matched virtual hallway with and without continuous mediolateral optical flow perturbations of three different amplitudes...
March 31, 2017: Human Movement Science
https://www.readbyqxmd.com/read/28365529/giant-cell-tumour-of-bone-in-the-denosumab-era
#11
REVIEW
Lizz van der Heijden, P D Sander Dijkstra, Jean-Yves Blay, Hans Gelderblom
Giant cell tumour of bone (GCTB) is an intermediate locally aggressive primary bone tumour, occurring mostly at the meta-epiphysis of long bones. Overexpression of receptor activator of nuclear factor kappa-B ligand (RANKL) by mononuclear neoplastic stromal cells promotes recruitment of numerous reactive multinucleated osteoclast-like giant cells, causing lacunar bone resorption. Preferential treatment is curettage with local adjuvants such as phenol, alcohol or liquid nitrogen. The remaining cavity may be filled with bone graft or polymethylmethacrylate (PMMA) bone cement; benefits of the latter are a lower risk of recurrence, possibility of direct weight bearing and early radiographic detection of recurrences...
March 30, 2017: European Journal of Cancer
https://www.readbyqxmd.com/read/28361323/slide-automatic-spine-level-identification-system-using-a-deep-convolutional-neural-network
#12
Jorden Hetherington, Victoria Lessoway, Vit Gunka, Purang Abolmaesumi, Robert Rohling
PURPOSE: Percutaneous spinal needle insertion procedures often require proper identification of the vertebral level to effectively and safely deliver analgesic agents. The current clinical method involves "blind" identification of the vertebral level through manual palpation of the spine, which has only 30% reported accuracy. Therefore, there is a need for better anatomical identification prior to needle insertion. METHODS: A real-time system was developed to identify the vertebral level from a sequence of ultrasound images, following a clinical imaging protocol...
March 30, 2017: International Journal of Computer Assisted Radiology and Surgery
https://www.readbyqxmd.com/read/28359575/inaccuracy-and-bias-in-adult-skeletal-age-estimation-assessing-the-reliability-of-eight-methods-on-individuals-of-varying-body-sizes
#13
Catherine E Merritt
Accurate age estimations are essential for identifying human skeletal remains and narrowing missing persons searches. This study examines how BMI, body mass, and stature influence inaccuracy and bias in adult skeletal age estimations obtained using eight methods. 746 skeletons from the Hamann-Todd and William Bass Collections were used. Underweight BMI, light body mass, and short-stature individuals have the most error associated with their age estimates and are consistently under-aged between 3 to 13years...
March 18, 2017: Forensic Science International
https://www.readbyqxmd.com/read/28357574/percutaneous-imaging-guided-screw-fixation-of-osteoporotic-transverse-fractures-of-the-lower-sacrum-with-cement-augmentation-report-of-2-cases
#14
Julien Garnon, Guillaume Koch, Nitin Ramamurthy, Salem Bauones, Jean Caudrelier, Georgia Tsoumakidou, Roberto Luigi Cazzato, Afshin Gangi
Osteoporotic fractures of the sacrum usually involve the sacral ala and can be managed with percutaneous cementoplasty if conservative therapy failed to achieve bone consolidation. On the other hand, isolated transverse fractures of the lowest sacrum are more rare, with little literature focusing on their management in the osteoporotic population. If pseudoarthrosis occurs in this location, sacroplasty is not an optimal therapeutic option because of the poor biomechanical resistance of cement to multi-directional stresses...
March 29, 2017: Cardiovascular and Interventional Radiology
https://www.readbyqxmd.com/read/28350559/interventional-spine-considerations-for-dural-ectasia-in-a-patient-with-marfan-syndrome
#15
David J Kohns
For patients with Marfan syndrome who present with radicular low back pain, interventional spine providers should be familiar with dural ectasia with variable diffuse thinning of the posterior wall of the lumbar spine and sacrum. Providers should carefully weigh the risks and benefits of offering elective procedures because altered anatomy may put these patients at higher risk of dural puncture. Patient selection is essential because hydrostatic pressures and/or neural tension should also be considered as potential pain generators that may not be relieved by steroid injections...
March 27, 2017: American Journal of Physical Medicine & Rehabilitation
https://www.readbyqxmd.com/read/28349211/shoulder-hemiarthroplasty-for-proximal-humeral-fractures-analysis-of-clinical-and-radiographic-outcomes-at-midterm-follow-up-a-series-of-51-patients
#16
Ph Valenti, D Aliani, Ch Maroun, J D Werthel, K Elkolti
Shoulder hemiarthroplasty has historically been the gold standard treatment for proximal humeral fractures not suitable to open reduction and internal fixation. In the last decades, reverse shoulder arthroplasty has gained more and more importance. Aim of this study is to retrospectively analyze subjective and objective outcomes of a group of consecutive patients. Fifty-one patients were evaluated with a mean follow-up of 18 months (range 12-60). For all the cases, the same surgical technique was performed in all cases...
April 2017: European Journal of Orthopaedic Surgery & Traumatology: Orthopédie Traumatologie
https://www.readbyqxmd.com/read/28346646/metastatic-chordoma-of-the-tongue-case-report
#17
Sultan Bişkin, Rabiye Uslu Erdemir, Sultan Şevik Eliçora, Sevim Aydınlı, Şükrü Oğuz Özdamar
Chordomas are rare bone tumors that arise from notochord remnants. They most commonly occur in the sacrum, but they also can be seen in the skull base, cervical spine, and thoracolumbar vertebrae. Chordomas account for 1 to 4% of all primary skeletal tumors. They are usually indolent, locally growing tumors. Distant metastasis has been reported in 3 to 48% of cases. When metastasis occurs, it is usually observed in the lung, bone, and liver. To the best of our knowledge, no case of a chordoma metastasis to the tongue has been previously reported in the literature...
March 2017: Ear, Nose, & Throat Journal
https://www.readbyqxmd.com/read/28342920/which-is-the-more-appropriate-proximal-fusion-level-for-adult-lumbar-degenerative-flat-back
#18
Jeong-Hoon Choi, Jee-Soo Jang, Hyeun-Sung Kim, Il-Tae Jang
OBJECTIVE: To determine the optimal proximal fusion level after long instrumented fusion to the sacrum for lumbar degenerative flat back. METHODS: Data from 70 patients with lumbar degenerative flat back were reviewed retrospectively. Three groups were designated according to the upper instrumented vertebrae (UIV) : Group 1 (UIV = T10 or above), Group 2 (UIV = T11 to T12), and Group 3 (UIV = L1 or below). Preoperative and postoperative pelvic parameters, degree of correction, and prevalence of proximal junctional kyphosis (PJK) and its risk factors were evaluated...
March 22, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28342586/biomechanical-analysis-of-the-fixation-systems-for-anterior-column-and-posterior-hemi-transverse-acetabular-fractures
#19
Jianyin Lei, Pengfei Dong, Zhiqiang Li, Feng Zhu, Zhihua Wang, Xianhua Cai
OBJECTIVE: The aim of this study was to evaluate the biomechanical properties of common fixation systems for complex acetabular fractures. METHODS: A finite element (FE) pelvic model with anterior column and posterior hemi-transverse acetabular fractures was created. Three common fixation systems were used to fix the posterior wall acetabular fractures: 1. Anterior column plate combined with posterior column screws (group I), 2. Anterior column plate combined with quadrilateral area screws (group II) and 3...
March 22, 2017: Acta Orthopaedica et Traumatologica Turcica
https://www.readbyqxmd.com/read/28339540/interventional-pain-management-for-sacroiliac-tumors-in-the-oncologic-population-a-case-series-and-paradigm-approach
#20
Nathan Hutson, Joseph C Hung, Vinay Puttanniah, Eric Lis, Ilya Laufer, Amitabh Gulati
Introduction.:  Tumors invading the sacrum and/or ilium often represent incurable metastatic disease, and treatment is targeted toward palliation of symptoms and control of pain. As systemic opioid therapy is frequently inadequate and limited by side effects, a variety of interventional techniques are available to better optimize analgesia. Using six patients as a paradigm for interventional approaches to pain relief, we present a therapeutic algorithm for treating sacroiliac tumor-related pain in the oncologic population...
October 7, 2016: Pain Medicine: the Official Journal of the American Academy of Pain Medicine
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