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Search Results: 1 - 10 of 12 matches for " Isurani; "
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On the Variations of the Muscle Flexor Digitorum Brevis: Anatomical Insight
Ilayperuma,Isurani;
International Journal of Morphology , 2012, DOI: 10.4067/S0717-95022012000100059
Abstract: flexor digitorum brevis, an intrinsic muscle of the sole of the foot, is stated as one of the muscles that shows frequent anatomical variations. its most commonly reported anomaly is the absence of tendon to the little toe. from a clinical standpoint of view, flexor digitorum brevis musculocutanous flap is used in the reconstruction of the heel pad and flexor digitorum brevis tendon transfer is employed in the correction of flexible claw and hammer toe deformities. despite its significance little is known regarding the variations of this muscle in sri lankans. hence, the goal of this study was to elucidate the incidence and morphological features of this muscle in an adult sri lankan population. a total of one hundred and thirty five apparently healthy human feet were dissected and studied for the morphological features of the flexor digitorum brevis muscle. the incidence of the absent fourth tendon of the flexor digitorum brevis in the present study was found to be 71.85%. in all cases, when absent, it was missing bilaterally. the results of the present study further highlight the anatomical variations of the flexor digitorum brevis muscle. a sound knowledge about the anatomical variations of flexor digitorum brevis will facilitate the outcome of surgical as well as diagnostic imaging techniques of the foot. furthermore, understanding muscle architecture of the foot may assist in the design of prosthesis and analysis of foot function.
On the Prediction of Personal Stature from Cranial Dimensions
Ilayperuma,Isurani;
International Journal of Morphology , 2010, DOI: 10.4067/S0717-95022010000400024
Abstract: dimensional relationship between body segments and stature has been the focus of scientists for many years. all such studies were based on the fact that body segments exhibit consistent ratios relative to the stature and these ratios are linked to age, gender and race. racial characters are best defined in the skull. therefore, prediction of stature from cranial remains is vital in establishing the identity of an unknown individual. despite its significance, little is known concerning the cranial dimensions in sri lankans. hence, this study was designed to investigate the relationship and to propose a gender and age specific linear regression model between the cranial dimensions and height of an individual. a total of 400 subjects with an age span of 20-23 years were included in the study. the cranial length, breadth and auricular head height of the subjects were recorded using a digital sliding caliper and todd's head spanner capable of measuring to the nearest 0.01mm. the height of the individual was measured standing erect, in anatomical position using a standing height measuring instrument. the findings indicated significant gender differences in all the mean cranial dimensions. positive correlations between all cranial dimensions and stature were observed. linear regression models for the prediction of stature from the above dimensions were formulated for both sexes. cranial dimensions provide an accurate and reliable means in estimating the height of an individual. the regression formulae derived in this study will be of potential use in clinical, medico-legal, anthropological and archeological studies.
Evaluation of Cephalic Indices: A Clue for Racial and Sex Diversity
Ilayperuma,Isurani;
International Journal of Morphology , 2011, DOI: 10.4067/S0717-95022011000100019
Abstract: cephalic index is an important parameter in evaluating racial and gender differences. a large body of evidence shows a clear racial variation in cephalic index. therefore detailed knowledge of the population specific data on biometric features of the cranium is important in the study and comparison of the crania of populations from different racial backgrounds, assessing growth and development of an individual and in the diagnosis of any abnormalities of cranial size and shape. despite its' significance, little is known concerning the cranial morphometry in sri lankans. hence, the present study was undertaken to establish the cranial indices and head shapes in an adult sri lankan population. a total of 400 subjects with an age span of 20-23 years were included in the study. the cranial length, breadth and auricular head height of the subjects were recorded using a digital sliding caliper and todd's head spanner. the horizontal, vertical and transverse cephalic indices were calculated using external dimensions of the skulls. there were significant gender differences in all principal cranial dimensions. the mean horizontal, vertical and transverse cephalic indices were 78.54, 78.68 and 100.52 respectively. the predominant cephalic phenotype of the study subjects were brachycephalic, hypsicephalic and acrocephalic. among males dolicocephalics and among females brachycephalics dominated. the results of this study highlight the racial and gender differences in cranial morphometry and cephalic indices in an adult sri lankan population. the data will be of immense use in clinical, medico-legal, anthropological and archeological scenarios.
On the Variations of the Muscle Flexor Digitorum Brevis: Anatomical Insight Variaciones del Músculo Flexor Corto de los Dedos: Experiencias de Anatomía
Isurani Ilayperuma
International Journal of Morphology , 2012,
Abstract: Flexor digitorum brevis, an intrinsic muscle of the sole of the foot, is stated as one of the muscles that shows frequent anatomical variations. Its most commonly reported anomaly is the absence of tendon to the little toe. From a clinical standpoint of view, flexor digitorum brevis musculocutanous flap is used in the reconstruction of the heel pad and flexor digitorum brevis tendon transfer is employed in the correction of flexible claw and hammer toe deformities. Despite its significance little is known regarding the variations of this muscle in Sri Lankans. Hence, the goal of this study was to elucidate the incidence and morphological features of this muscle in an adult Sri Lankan population. A total of one hundred and thirty five apparently healthy human feet were dissected and studied for the morphological features of the flexor digitorum brevis muscle. The incidence of the absent fourth tendon of the flexor digitorum brevis in the present study was found to be 71.85%. In all cases, when absent, it was missing bilaterally. The results of the present study further highlight the anatomical variations of the flexor digitorum brevis muscle. A sound knowledge about the anatomical variations of flexor digitorum brevis will facilitate the outcome of surgical as well as diagnostic imaging techniques of the foot. Furthermore, understanding muscle architecture of the foot may assist in the design of prosthesis and analysis of foot function. El músculo flexor corto de los dedos, es un músculo intrínseco de la planta del pie que frecuentemente presenta variaciones anatómicas. La variación más frecuente es la ausencia de tendón destinado al dedo mínimo. Desde el punto de vista clínico se utilizan colgajos musculocutáneos del músculo flexor corto de los dedos para la reconstrucción de la región subcalcánea. Además, el tendón del músculo es usado para corregir deformidades de garra y martillo de los dedos del pie. A pesar de su importancia, es escasa la información acerca de este músculo en la población adulta de Sri Lanka.Fueron disecados 135 pies humanos aparentemente sanos analizándose sus características morfológicas. Se determinó que un 71,85% el tendón para el quinto dedo del músculo flexor corto de los dedos estaba ausente. En todos los casos, ésta se presentaba bilateralmente. El estudio se ala la importancia de tener un cabal conocimiento acerca de las variaciones anatómicas del músculo flexor corto de los dedos, para facilitar tanto las técnicas quirúrgicas, como el diagnostico a través de imagenlogía del pie. Además, un buen conocimiento de la arquitec
Evaluation of Cephalic Indices: A Clue for Racial and Sex Diversity Evaluación del índice Cefálico: Una Clave de la Diversidad Racial y de Sexo
Isurani Ilayperuma
International Journal of Morphology , 2011,
Abstract: Cephalic index is an important parameter in evaluating racial and gender differences. A large body of evidence shows a clear racial variation in cephalic index. Therefore detailed knowledge of the population specific data on biometric features of the cranium is important in the study and comparison of the crania of populations from different racial backgrounds, assessing growth and development of an individual and in the diagnosis of any abnormalities of cranial size and shape. Despite its' significance, little is known concerning the cranial morphometry in Sri Lankans. Hence, the present study was undertaken to establish the cranial indices and head shapes in an adult Sri Lankan population. A total of 400 subjects with an age span of 20-23 years were included in the study. The cranial length, breadth and auricular head height of the subjects were recorded using a digital sliding caliper and Todd's head spanner. The horizontal, vertical and transverse cephalic indices were calculated using external dimensions of the skulls. There were significant gender differences in all principal cranial dimensions. The mean horizontal, vertical and transverse cephalic indices were 78.54, 78.68 and 100.52 respectively. The predominant cephalic phenotype of the study subjects were brachycephalic, hypsicephalic and acrocephalic. Among males dolicocephalics and among females brachycephalics dominated. The results of this study highlight the racial and gender differences in cranial morphometry and cephalic indices in an adult Sri Lankan population. The data will be of immense use in clinical, medico-legal, anthropological and archeological scenarios. El índice cefálico es un parámetro importante para evaluar las diferencias raciales y sexuales. Una gran cantidad de evidencia muestra una clara variación racial en el índice cefálico. Por tanto, un conocimiento detallado de los datos específicos de una población sobre las características biométricas del cráneo, son importantes en el estudio y la comparación craneal de poblaciones de diferentes orígenes raciales, evaluación del crecimiento y desarrollo de un individuo, y el diagnóstico de cualquier anomalía del tama o o forma del cráneo. A pesar de su importancia, poco se conoce sobre la morfometría craneal en Sri Lanka. El presente estudio se realizó para establecer los índices cefálicos y formas de la cabeza en una población adulta de Sri Lanka. Un total de 400 sujetos entre 20 y 23 a os fueron incluidos en el estudio. La longitud de la cabeza, ancho y altura auricular fueron registradas con un caliper digital deslizante y
A Model for the Estimation of Personal Stature from the Length of Forearm
Ilayperuma,Isurani; Nanayakkara,Ganananda; Palahepitiya,Nadeeka;
International Journal of Morphology , 2010, DOI: 10.4067/S0717-95022010000400015
Abstract: prediction of stature from incomplete and decomposing skeletal remains is vital in establishing the identity of an unknown individual. it has been stated that a variety of factors such as race, gender and nutrition play an important role in determining the height of an individual. estimation of stature from measurements of various long bones has been achieved with varying degree of accuracy. those studies resulted in establishing different formulae for the estimation of stature for the respective populations. however, evidence shows that there is a great void in such norms for sri lankans. hence, this study was designed to investigate the relationship and to propose a gender and age specific linear regression models between the ulna length and height of an individual. a total of 258 subjects with an age span of 20-23 years were included in the study. the ulna length was measured using a digital sliding caliper capable of measuring to the nearest 0.01 mm. the height of the individual was measured standing erect, in anatomical position using a standing height measuring instrument. the findings of the study indicated significant differences of the ulna length between the genders. a positive correlation between height and ulna length was observed in both sexes and it was statistically significant. regression equations for stature estimation were formulated using the ulna lengths for both males and females. the ulna length provides an accurate and reliable means in estimating the height of an individual. the regression formulae proposed in this study will be useful for clinicians, anatomists, archeologists, anthropologists and forensic scientists when such evidence provides the investigator the only opportunity to gauge that aspect of an individual's physical description.
Morphometric Analysis of the Mental Foramen in Adult Sri Lankan Mandibles
Ilayperuma,Isurani; Nanayakkara,Ganananda; Palahepitiya,Nadeeka;
International Journal of Morphology , 2009, DOI: 10.4067/S0717-95022009000400010
Abstract: evidence shows a clear racial variation in the position of the mental foramen. therefore, detailed knowledge of the morphometry of the mental foramen in different populations is essential in clinical dentistry when administering regional anesthesia, and performing peripheral surgery in the mental region of the mandible. the goal of this study was to elucidate the morphological features and precise anatomical position of the mental foramen with reference to surrounding anatomical landmarks in an adult sri lankan population. a total of fifty one adult dry mandibles were assessed to determine the number, shape, orientation, vertical and transverse diameters of the mental foramen and the distance between the mental foramen and symphysis menti. the position of the mental foramen was determined in relation to the mandibular teeth. data were evaluated between gender and side. the findings indicated that the most common position for the mental foramen was in line with the longitudinal axis of the lower second premolar (52.94%) followed by a position between first and second premolar (26.47%). the mean transverse and vertical diameters of the foramen were 3.31 ± 0.76 and 2.50 ± 0.61 mm, respectively. the mental foramen was located 24.87 ± 6.07 mm (right side) and 24.77 ± 6.07mm (left side) lateral to the symphysis menti. in the majority of cases, the mental foramen was oval in shape (59%) and its usual direction of opening was in a postero-superior direction (49.01%). the incidence of multiple mental foramina was 3.92%. the results of this study provide valuable information that will facilitate effective localization of the neurovascular bundle passing through the mental foramen thus avoiding complications from local anesthetic, surgical and other invasive procedures.
Morphometric Analysis of the Infraorbital Foramen in Adult Sri Lankan Skulls
Ilayperuma,Isurani; Nanayakkara,Ganananda; Palahepitiya,Nadeeka;
International Journal of Morphology , 2010, DOI: 10.4067/S0717-95022010000300019
Abstract: evidence supports a clear racial variation in the position of the infraorbital foramen. therefore detailed knowledge of the population specific data on biometric features of the infraorbital foramen will facilitate therapeutic, diagnostic and surgical manipulations in the maxillo-facial region. the goal of this study was to elucidate the morphological features and precise anatomical position of the infraorbital foramen with reference to surrounding anatomical landmarks in an adult sri lankan population. a total of one hundred and eight adult dry skulls were assessed to determine the number, shape, orientation, vertical and transverse diameters of the infraorbital foramen, transverse distance from the infraorbital foramen to the maxillary midline and the zygomatico-maxillary suture and the vertical distance from the infraorbital foramen to the infraorbital rim and supraorbital foramen. the position of the infraorbital foramen was determined in relation to the maxillary teeth and the supraorbital foramen.the findings indicated that the size of the infraorbital foramen and the mean distances from the infraorbital foramen to the maxillary midline, infraorbital rim and supraorbital foramen was significantly larger in males than in females. the modal position for the infraorbital foramen was in line with the long axis of the second upper premolar and the supraorbital and infraorbital foramina were lying in the same sagittal plane only in 24.07 % of the skulls. the results highlight the racial and gender differences of the infra orbital foramen and emphasize the need for meticulous preoperative evaluation of the infraorbital foramen in patients who are candidates for maxillo-facial surgeries and regional block anesthesia.
Incidence of Humeral Head of Biceps Brachii Muscle: Anatomical Insight
Ilayperuma,Isurani; Nanayakkara,Ganananda; Palahepitiya,Nadeeka;
International Journal of Morphology , 2011, DOI: 10.4067/S0717-95022011000100037
Abstract: biceps brachii is stated as one of the muscles that shows most frequent anatomical variations. its most commonly reported anomaly is the presence of an accessory fascicle arising from the humerus which is termed as the humeral head of biceps brachii. evidence shows a clear racial trend in the incidence of the humeral head of biceps brachii. therefore, detailed knowledge of this variation in different populations is important for surgical interventions of the arm, nerve compression syndromes and in unexplained pain syndromes in the arm or shoulder region. the goal of this study was to elucidate the incidence and morphological features of this muscle in an adult sri lankan population. upper extremities of the total of one hundred thirty five cadavers were dissected and studied for the presence of accessory heads of the biceps brachii muscle. the proximal and distal attachments of the humeral heads as well as their cranio-caudal, antero-posterior and medio-lateral dimensions were recorded. the incidence of humeral head of biceps brachii was found to be 3.7%. in all cases, it was found unilaterally and only in male subjects. the humeral head originated from the antero-medial aspect of the humeral shaft and descended and merged with the other two heads to form a common tendon. the results of the present study further highlight the racial variations in the incidence of humeral head of biceps brachii among sri lankans. knowledge of the occurrence of humeral head of biceps brachii may facilitate preoperative diagnosis as well as the surgical procedures of the upper limb thus avoiding iatrogenic injuries.
Incidence of Humeral Head of Biceps Brachii Muscle: Anatomical Insight Incidencia de la Cabeza Humeral del Músculo Bíceps Braquial: Visión Anatómica
Isurani Ilayperuma,Ganananda Nanayakkara,Nadeeka Palahepitiya
International Journal of Morphology , 2011,
Abstract: Biceps brachii is stated as one of the muscles that shows most frequent anatomical variations. Its most commonly reported anomaly is the presence of an accessory fascicle arising from the humerus which is termed as the humeral head of biceps brachii. Evidence shows a clear racial trend in the incidence of the humeral head of biceps brachii. Therefore, detailed knowledge of this variation in different populations is important for surgical interventions of the arm, nerve compression syndromes and in unexplained pain syndromes in the arm or shoulder region. The goal of this study was to elucidate the incidence and morphological features of this muscle in an adult Sri Lankan population. Upper extremities of the total of one hundred thirty five cadavers were dissected and studied for the presence of accessory heads of the biceps brachii muscle. The proximal and distal attachments of the humeral heads as well as their cranio-caudal, antero-posterior and medio-lateral dimensions were recorded. The incidence of humeral head of biceps brachii was found to be 3.7%. In all cases, it was found unilaterally and only in male subjects. The humeral head originated from the antero-medial aspect of the humeral shaft and descended and merged with the other two heads to form a common tendon. The results of the present study further highlight the racial variations in the incidence of humeral head of biceps brachii among Sri Lankans. Knowledge of the occurrence of humeral head of biceps brachii may facilitate preoperative diagnosis as well as the surgical procedures of the upper limb thus avoiding iatrogenic injuries. El músculo bíceps braquial se conoce como uno de los músculos que muestra las variaciones anatómicas más frecuentes. Su anomalía más común es la presencia de un fascículo accesorio proveniente del húmero, que se denomina cabeza humeral del músculo bíceps braquial. La evidencia muestra una clara tendencia racial en la incidencia de la cabeza humeral del músculo bíceps braquial. El conocimiento acabado de esta variación, en las diferentes poblaciones, es importante para las intervenciones quirúrgicas del brazo, en los síndromes de compresión nerviosa y en los síndromes de dolor inexplicable en la región del brazo o del hombro. El objetivo de este estudio fue determinar la incidencia y las características morfológicas de este músculo en una población adulta de Sri Lanka. Fueron estudiados los miembros superiores en 135 cadáveres, disecados para evaluar la presencia de las cabezas del músculo bíceps braquial accesorio. Fueron registrados el origen e inserción de la
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