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Pars articularis

Abolfazl Rahimizadeh, Kaveh Haddadi
BACKGROUND: One risk accompanying with Lumbar discectomy is breaking of the surgical scalpel during discectomy. Greatest of the broken blades can be detached during the first surgery. Conversely, in few cases, surgeon's efforts might be ineffective, causing in engaged foreign body in the disc space. Works regarding this matter is infrequent, and there are no exclusive strategies to discourse this complication. PRESENTATION OF CASE: A 26-year-old female with L5-S1 left disc sequestration and plantar flexion disturbance, underwent a one level hemilaminectomy for lumbar disc herniation...
2016: International Journal of Surgery Case Reports
Paloma Compes, Patrick Rakotozanany, Henry Dufour, Stéphane Fuentes
PURPOSE: Septic cervical facet joints arthritis is a rare pathology, usually revealed by fever and neck pain. As symptoms may be indolent, a high index of suspicion needs to be maintained. Magnetic resonance imaging (MRI) is effective for early diagnostic, looking for local spread and guiding potential preoperative planning. We present a case exhibiting an uncommon pathology with possible significant morbidity if misdiagnosed. METHODS: A 75-year-old woman presented with fever, neck stiffness and torticollis accompanied with altered level of consciousness...
May 2015: European Spine Journal
Sina Pourtaheri, Arash Emami, Tyler Stewart, Ki Hwang, Kimona Issa, Steven F Harwin, Michael A Mont
Osteochondroma (or osteocartilaginous exostosis) is the most common bone tumor of childhood, with an incidence ranging from 1 to 1.4 per 1,000,000. In the lumbar spine, osteochondromata usually arise from the posterior column at the secondary ossification center and grow away from the spinal canal without causing neurologic deficits. This article reports a rare intraspinal lumbar osteochondroma that compressed the thecal sac, resulting in a hip flexion contracture in an 11-year-old boy. This lumbar, intraspinal, extradural exostosis was confluent with the L3 inferior articular process and compressed the L3 nerve root and thecal sac severely...
April 2014: Orthopedics
Niladri Kumar Mahato
BACKGROUND: Lumbo-sacral transitional variations are common in the general population. Structural inadequacies of the terminal lumbar vertebral pars interarticularis (PI) and lamina have often been implicated as important factors for lumbo-sacral instability. AIMS: Quantifying dimensions of PI and laminae in terminal lumbar vertebrae associated with lumbosacral transitions and compare them with their normal counterparts. MATERIALS AND METHODS: Fourth lumbar vertebrae in spines involved with complete sacralization of the fifth lumbar (L5) vertebrae and L5 vertebrae associated with lumbosacral accessory articulation were measured for the height, width and thickness of the PI and the laminae on both sides and compared to normal vertebrae...
June 2013: North American Journal of Medical Sciences
Marvin Maurer, Ricardo Bernardi Soder, Matteo Baldisserotto
BACKGROUND: Most lesions of the spine of athletes, which often are detected incidentally, do not cause important symptoms or make the athletes discontinue their physical activities. To better understand the significance of these lesions, new imaging studies have been conducted with asymptomatic athletes in several sports, aiming to detect potentially deleterious and disabling abnormalities. PURPOSE: To compare the magnetic resonance imaging (MRI) lumbar spine findings in a group of asymptomatic adolescent rowers and in a control group of adolescents matched according to age and sex who do not practice any regular physical activity...
February 2011: American Journal of Sports Medicine
Juan S Uribe, Edwin Ramos, Ali Baaj, A Samy Youssef, Fernando L Vale
OBJECTIVE: Presentation of a successful case of craniocervical stabilization involving a novel surgical technique using the occipital condyles as the sole cranial fixation points. CLINICAL PRESENTATION: A 22-year-old man presented in a delayed fashion with neck pain after a motor vehicle accident. Evaluation revealed a type 2 odontoid fracture with pseudarthrosis and displacement of the dens superiorly and cranial settling of the dens. INTERVENTION: The patient underwent posterior occipitocervical fixation with a polyaxial screw rod construct using the occipital condyle, C1 lateral mass, and C2 pars articularis for fixation...
December 2009: Neurosurgery
Hisanori Mihara, Katsuhiro Onari, Boyle C Cheng, Stephen M David, Thomas A Zdeblick
STUDY DESIGN: Biomechanical analysis of the level above pars defects was performed using calf lumbar spines. OBJECTIVES: To evaluate whether complete spondylolysis contributes to the pathology of the upper adjacent motion segment to the pars defect. SUMMARY OF BACKGROUND DATA: It is well recognized that patients with spondylolysis show a higher incidence of spondylolisthesis or degenerative disc changes at the level of the pars defects. However, some authors have referred to the fact that disc damage may occur at the level above the defect and give rise to symptoms...
February 1, 2003: Spine
O Bloch, L T Holly, J Park, C Obasi, K Kim, J P Johnson
OBJECT: In recent studies some authors have indicated that 20% of patients have at least one ectatic vertebral artery (VA) that, based on previous criteria in which preoperative computerized tomography (CT) and standard intraoperative fluoroscopic techniques were used. may prevent the safe placement of C1-2 transarticular screws. The authors conducted this study to determine whether frameless stereotaxy would improve the accuracy of C1-2 transarticular screw placement in healthy patients, particularly those whom previous criteria would have excluded...
July 2001: Journal of Neurosurgery
K Barrett, M L Miller, J T Wilson
OBJECTIVE AND IMPORTANCE: Tophaceous gout uncommonly affects the axial skeleton. The clinical presentations of gout of the spine range from back pain to quadriplegia. Gout that presents as back pain and fever may be difficult to distinguish from spinal infection. We present a case of a patient with tophaceous gout of the lumbar spine who was initially diagnosed with and treated for an epidural infection. The clinical and diagnostic features of tophaceous gout of the spine are reviewed...
May 2001: Neurosurgery
A Stäbler, R Paulus, M Steinborn, R Bosch, M Matzko, M Reiser
PURPOSE: To assess the value of MR imaging in demonstrating ongoing spondylolysis in adolescents. METHODS: MRI was performed in 9 juvenile patients (3 female, 6 male aged 8-16 years; mean 12.5 y) with pain during hyperextension. In 6 patients a CT scan and in 5 a plain film was available. RESULTS: In all patients bone marrow edema was found in the pars interarticularis and the pedicle, which was bilateral in 4 patients. In 7/9 cases the L5 vertebra was affected, in 2/9 cases spondylolysis was found in L4...
January 2000: RöFo: Fortschritte Auf Dem Gebiete der Röntgenstrahlen und der Nuklearmedizin
M R Hutchinson
BACKGROUND: Rhythmic gymnastics is a sport that blends the athleticism of a gymnast with the grace of a ballerina. The sport demands both the coordination of handling various apparatus and the flexibility to attain positions not seen in any other sport. To attain perfection and reproducibility of their routines, the athletes must practice and repeat the basic elements of their routines thousands of times. In so doing, the athlete places herself at risk of a myriad of overuse injuries, the most common being low back pain...
November 1999: Medicine and Science in Sports and Exercise
F U Niethard, J Pfeil, M Weber
The commonly accepted hypothesis set up by Brocher in 1950 that the dysplasia of the pars interarticularis vertebrae is an essential requirement for the occurrence of spondylolysis should be thought over in light of recent findings. Newly published investigations show that disturbed spinal growth leads to dysplasia of the vertebral arch and to spondylolysis. Disturbances that play an important role are biomechanical stress factors that result from the evolution from a quadripedal to a bipedal human locomotion as well as stress fractures of the vertebral pars inter-articularis and defects in vertebral maturation in small infants...
September 1997: Der Orthopäde
P Guigui, J M Ulivieri, B Lassale, A Deburge
UNLABELLED: PURPOSE THE STUDY: The aim of this study was to determine the causes of failure following surgical treatment of lumbar spinal stenosis, indications for redo surgery and factors influencing the final result. MATERIAL AND METHODS: Between 1975 and 1992, 38 patients were reoperated after a surgical treatment of lumbar spinal stenosis. The mean follow-up was 34 months. All of these patients had had at least one previous lumbar spinal operation. Second operation was performed 35 months on average following the previous surgery...
1995: Revue de Chirurgie Orthopédique et Réparatrice de L'appareil Moteur
S Eickhoff
The morphogenesis of the manubrium sterni was studied in a series of dated embryos of Tupaia belangeri. In addition to the sternal bands, the "paired suprasternal Anlage" takes part in the shaping of the manubrium sterni as reported by Klima (1968) for other mammals. It forms skeletal elements that mediate between the clavicle and the manubrium: the sternocalvicular ligament and the paired prominence on the dorsal surface of the manubrium, which underlies the clavicles. The paired prominence corresponds to the praeclavium present in some therians...
1990: Gegenbaurs Morphologisches Jahrbuch
M M Panjabi, K Takata, V Goel, D Federico, T Oxland, J Duranceau, M Krag
This study details the quantitative three-dimensional surface anatomy of thoracic vertebrae based on a study of 144 vertebrae. The thoracic spine was found to have three distinct regions: upper, middle, and lower segments. The two end segments appear to be transitional zones toward cervical and lumbar regions. The middle zone (T3 to T9) is of utmost importance due to the presence of the combination of narrow spinal canal and critical vascular supply. Means and standard errors of the means for linear, angular, and area dimensions of vertebral bodies, spinal canal, pedicle, pars articularis, spinous and transverse processes, and rib articulations are provided for all thoracic vertebrae...
August 1991: Spine
A Hulkko, S Orava
Stress fractures in athletes usually heal well with merely rest and conservative treatment. It has been estimated that in Finland 400-500 athletic stress fractures occur annually per year. In sports clinic series stress fractures comprise 3.3 to 4.6 per cent of all overuse injuries. Delayed and non-union have been reported to occur in athletes quite often, up to 10 per cent of athletic stress fractures in Finland. The reason is on the one hand delayed diagnosis due to late consultation of expert physicians, and on the other hand too short a rest from hard physical activity...
1991: Annales Chirurgiae et Gynaecologiae
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