scholarly journals Foramen magnum, occipital condyles and hypoglossal canals morphometry: anatomical study with clinical implications

2017 ◽  
Vol 76 (3) ◽  
pp. 446-457 ◽  
Author(s):  
Ch. Lyrtzis ◽  
M. Piagkou ◽  
A. Gkioka ◽  
N. Anastasopoulos ◽  
S. Apostolidis ◽  
...  
Keyword(s):  
Anatomical Study ◽  
Foramen Magnum ◽  
Clinical Implications ◽  
Occipital Condyles

scholarly journals Flexor Pollicis Brevis Muscle. Anatomical Study and Clinical Implications

2017 ◽  
Vol 11 (1) ◽  
pp. 1321-1329
Author(s):  
Edie Benedito Caetano ◽  
Yuri da Cunha Nakamichi ◽  
Renato Alves de Andrade ◽  
Maico Minoru Sawada ◽  
Mauricio Tadeu Nakasone ◽  
...  
Keyword(s):  
Medical School ◽  
Median Nerve ◽  
Ulnar Nerve ◽  
Anatomical Study ◽  
Sao Paulo ◽  
Clinical Implications ◽  
Normal Pattern ◽  
Anatomical Dissection ◽  
Deep Branch ◽  
Catholic University

Introduction: This paper reports anatomical study of nature, incidence, innervation and clinical implications of Flexor Pollicis Brevis muscle (FPB). Material and Methods: The anatomical dissection of 60 limbs from 30 cadavers were performed in the Department of Anatomy of Medical School of Catholic University of São Paulo. Results: The superficial head of FPB has been innervated by the median nerve in 70% and in 30% it had double innervation. The deep head of FPB were absent in 14%, in 65%, occurred a double innervation. In 17.5% by deep branch of ulnar nerve and in 3.6% by recurrent branch of median nerve. Conclusion: The pattern of innervation more frequent in relationship to the flexor pollicis brevis muscle and should be considered as a normal pattern is that superficial head receives innervation of branches of median nerve and the deep head receives innervation of ulnar and median nerve.

scholarly journals MORPHOLOGICAL AND MORPHOMETRICAL ANALYSIS OF FORAMEN MAGNUM: AN ANATOMICAL STUDY

2018 ◽  
Vol 6 (2.3) ◽  
pp. 5284-5287
Author(s):  
Jignesh L Patel ◽  
◽  
Vipin Kumar ◽  
Ashish M Pandya ◽  
Suresh P Rathod ◽  
...  
Keyword(s):  
Anatomical Study ◽  
Foramen Magnum ◽  
Morphometrical Analysis

Corona mortis: An anatomical study with clinical implications in approaches to the pelvis and acetabulum

2007 ◽  
Vol 20 (4) ◽  
pp. 433-439 ◽  
Author(s):  
S. Darmanis ◽  
A. Lewis ◽  
A. Mansoor ◽  
M. Bircher
Keyword(s):  
Anatomical Study ◽  
Clinical Implications ◽  
Corona Mortis

scholarly journals Anatomical and clinical correlates of the precondylar tubercle

2014 ◽  
Vol 31 (03) ◽  
pp. 182-186 ◽  
Author(s):  
A. Jaffar
Keyword(s):  
Anterior Margin ◽  
Surgical Intervention ◽  
Foramen Magnum ◽  
Occipital Condyle ◽  
Radiographic Images ◽  
Radiographic Appearance ◽  
Clinical Correlates ◽  
Clinical Community ◽  
Spiral Computerized Tomography ◽  
Occipital Condyles

Abstract Introduction: The possible presence of the precondylar tubercle should be considered in order to avoid misinterpretation in radiographic images and confusion during surgical intervention. This study is aimed to describe and report the frequency of the precondylar tubercle and similar variations at the anterior margin of foramen magnum in order to alert the clinical community of their presence and of the possible associated variations. Materials and Methods: Fifty dry skulls were examined for variations at the anterior margin of foramen magnum. One skull with bilaterally prominent precondylar tubercles was studied using a spiral computerized tomography in order to demonstrate the radiographic appearance of the tubercle. Results: Precondylar tubercles were observed in 10% of the skulls. Other simulating observations included the presence of a midline spur, bilateral depression anteromedial to the occipital condyles, third occipital condyle, and a partly divided occipital condyle. In 89% of the cases these variations were associated with septation of the hypoglossal canal. Conclusion: The presence of a mere precondylar tubercle is not expected to produce neurological manifestations. However, its possible association with other variations should be considered. The size and location of the precondylar tubercle might evade plain radiographic films, but it can be readily revealed in axial computerized tomograms.

scholarly journals Quantitive Study on Some Aspect of Occipital Area in Domestic Cat (Felis catus)

2016 ◽  
pp. 18-21 ◽  
Author(s):  
M Uddin ◽  
ME Hossain ◽  
MS Islam ◽  
MB Hossain ◽  
KN Islam
Keyword(s):  
Foramen Magnum ◽  
Felis Catus ◽  
Occipital Bone ◽  
Domestic Cat ◽  
Clinical Anatomy ◽  
Significant Difference ◽  
The Mean ◽  
Level Of Significance ◽  
Occipital Condyles ◽  
Classification And Treatment

This study was planned to investigate some aspects of the morphometric characteristics of the occipital bone and foramen megnum in domestic cat (Felis catus). Twenty adult domestic cat including 10 males and 10 female cats were euthanized using diazepam (@ 20 mg/kg) and their skulls were macerated to give morphometric parameters. Student t-test with level of significance set at 5% (p < 0.05) was used to analyze the obtained values. The height of occipital triangle, width of occipital condyles, width of jugular process were significantly larger in male than female. The mean height and width of the foramen magnum were 1.32 ± 0.09 cm and 1.35 ± 0.08 cm, respectively, while the foramen index was below 100 at 90.72 ± 4.93. Parameters for the foramen magnum index showed significant difference between both sexes at p < 0.05. The foramen magnum showed shape variations and there were multiple hypoglossal foramina in over 80% of the cats. The morphometric values of the occipital bone and foramen magnum and clinical anatomy of the occipital region of the domestic cats provide an important baseline for further research in this field and could help in the better diagnosis, classification, and treatment of diseases related to this region and serve as a future reference defining an anatomic range.International Journal of Natural Sciences (2013), 3(1-4) 18-21

scholarly journals Anatomical Study of the Ulnar Nerve Variations at High Humeral Level and Their Possible Clinical and Diagnostic Implications

2015 ◽  
Vol 2015 ◽  
pp. 1-4 ◽  
Author(s):  
Anitha Guru ◽  
Naveen Kumar ◽  
Swamy Ravindra Shanthakumar ◽  
Jyothsna Patil ◽  
Satheesha Nayak Badagabettu ◽  
...  
Keyword(s):  
Ulnar Nerve ◽  
Upper Limb ◽  
Nerve Palsy ◽  
Motor Behavior ◽  
Anatomical Variation ◽  
Anatomical Study ◽  
Anatomical Variations ◽  
Clinical Implications ◽  
Surgical Practice ◽  
Careful Observation

Background. Descriptive evaluation of nerve variations plays a pivotal role in the usefulness of clinical or surgical practice, as an anatomical variation often sets a risk of nerve palsy syndrome. Ulnar nerve (UN) is one amongst the major nerves involved in neuropathy. In the present anatomical study, variations related to ulnar nerve have been identified and its potential clinical implications discussed. Materials and Method. We examined 50 upper limb dissected specimens for possible ulnar nerve variations. Careful observation for any aberrant formation and/or communication in relation to UN has been carried out. Results. Four out of 50 limbs (8%) presented with variations related to ulnar nerve. Amongst them, in two cases abnormal communication with neighboring nerve was identified and variation in the formation of UN was noted in remaining two limbs. Conclusion. An unusual relation of UN with its neighboring nerves, thus muscles, and its aberrant formation might jeopardize the normal sensori-motor behavior. Knowledge about anatomical variations of the UN is therefore important for the clinicians in understanding the severity of ulnar nerve neuropathy related complications.

scholarly journals Anatomical basis of approaches to foramen magnum and lower clival meningiomas: comparison of retrosigmoid and transcondylar approaches

2003 ◽  
Vol 14 (6) ◽  
pp. 1-5 ◽  
Author(s):  
Agustinus Suhardja ◽  
Anne M. R. Agur ◽  
Michael D. Cusimano
Keyword(s):  
Anatomical Study ◽  
Foramen Magnum ◽  
The Other ◽  
Retrosigmoid Approach ◽  
Surface Areas ◽  
Anatomical Basis ◽  
Paired Student ◽  
The Mean ◽  
Lower Clivus ◽  
The Brain

Object Meningiomas of the lower clivus and foramen magnum are among the most challenging of all neurosurgical lesions. Debate continues regarding the most appropriate approach to this eloquent anatomical region. This anatomical study was undertaken to measure and compare the area of surgical exposures of the lower clivus achieved using the retrosigmoid and the extreme-lateral transcondylar (ELT) approaches. Methods Thirteen embalmed cadaveric heads were dissected bilaterally via the retrosigmoid approach on one side and the ELT approach on the other. The circumference of the area of exposure was delineated using beaded pins placed into the dura. After removal of the brain, the longest longitudinal and transverse axes of the pinned areas were measured and surface area calculated. The area of surgical exposure was also expressed as a percentage of the total area of the lower clivus. Normalized and adjusted surface areas were calculated using the bimastoid diameter. The areas of exposure were compared using the two-tailed paired Student t-test. The mean area of exposure required using the retrosigmoid approach was 19.8 ±14.7 mm2 (range 6–49 mm2) and that using the ELT approach was 27.8 ±22.8 mm2 (range 10–90 mm2). The mean percentage of the lower clivus exposed by the retrosigmoid approach was 14.9 ±3.6% (range 10–22%) and that exposed by the ELT approach was 20.5 ± 4.9% (range 10–25%). The ELT approach provided significantly greater area of operative exposure and allowed a significantly higher percentage of lower clivus and foramen magnum exposure than did the retrosigmoid approach (p <0.05). Normalized and adjusted surface areas, taking into consideration the bimastoid diameter, were also statistically significant in favor of the ELT approach. Conclusions The ELT approach provided a significantly greater area of exposure than did the retrosigmoid approach.

Relationships of the sural nerve with the calcaneal tendon: an anatomical study with surgical and clinical implications

2009 ◽  
Vol 31 (10) ◽  
pp. 775-780 ◽  
Author(s):  
Nihal Apaydin ◽  
Murat Bozkurt ◽  
Marios Loukas ◽  
Huseng Vefali ◽  
R. Shane Tubbs ◽  
...  
Keyword(s):  
Sural Nerve ◽  
Anatomical Study ◽  
Clinical Implications ◽  
Calcaneal Tendon
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