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morphometric study on acetabulum

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https://www.readbyqxmd.com/read/25929707/a-geometric-morphometric-analysis-of-acetabular-shape-of-the-primate-hip-joint-in-relation-to-locomotor-behaviour
#1
COMPARATIVE STUDY
Marta San Millán, Antigoni Kaliontzopoulou, Carme Rissech, Daniel Turbón
The description of acetabular shape variation among primates is essential for our understanding of the locomotor behaviour and ecology of both extant and fossil species. In this study, we use two-dimensional geometric morphometrics to examine variation in acetabular shape in human and non-human primates and to determine the degree to which it co-varies with locomotor behaviour, while taking both intra and inter-specific variation into account. To these ends, we examined the acetabulum of 303 left hip bones of 27 extant genera of primates (including humans) with different locomotor behaviours...
June 2015: Journal of Human Evolution
https://www.readbyqxmd.com/read/25158908/acetabular-anteversion-is-associated-with-gluteal-tendinopathy-at-mri
#2
Kyle M Moulton, Abdel-Rahman Aly, Sathish Rajasekaran, Michael Shepel, Haron Obaid
OBJECTIVE: Gluteal tendinopathy and greater trochanteric pain syndrome (GTPS) remain incompletely understood despite their pervasiveness in clinical practice. To date, no study has analyzed the morphometric characteristics of the hip on magnetic resonance imaging (MRI) that may predispose to gluteal tendinopathy. This study aimed to evaluate whether acetabular anteversion (AA), femoral neck anteversion (FNA), and femoral neck-shaft angle (FNSA) are associated with MRI features of gluteal tendinopathy...
January 2015: Skeletal Radiology
https://www.readbyqxmd.com/read/24398993/morphometric-and-ultrasonographic-study-of-the-human-fetal-hip-joint-during-intrauterine-development
#3
Beáta Baróti, Zsuzsanna Pap, Z Pánti, M M Buruian, Z Pávai
UNLABELLED: The main method for the early screening of the developmental dysplasia of the hip (DDH) is the ultrasound imaging. There are several studies about the ultrasound imaging of newborns' hips, but only a few studies include the prenatal period of life. Our aim was to examine the prenatal development of the hip joint through the evolution of the α angle seen on the ultrasound, described in the Graf R method, combined with anatomical dissection. MATERIALS AND METHODS: Thirty-one post-mortem fetal hips were analyzed trough anatomical dissection, in 25 cases trough ultrasound imaging, in which the α angle was measured...
2013: Romanian Journal of Morphology and Embryology, Revue Roumaine de Morphologie et Embryologie
https://www.readbyqxmd.com/read/22892625/contribution-to-the-initial-pathodynamics-of-hip-luxation-in-young-rats
#4
Fernando Canillas, María J Delgado-Martos, Antonia Martos-Rodriguez, Begoña Quintana-Villamandos, Emilio Delgado-Baeza
BACKGROUND: An anatomo-functional system has been described for the normal hip of some young mammals. This system includes the ligamentum teres, the transverse acetabular ligament, and the meniscoid of the hip. PURPOSE: This report analyzes morphologic changes in the anatomo-functional system of young rats in an experimental model of hip luxation, and on the initial pathodynamics of luxation produced experimentally. METHODS: Hyperextension of the left knee was induced in 58 young rats through fixation of the tibia and femur with Kirschner wire...
September 2012: Journal of Pediatric Orthopedics
https://www.readbyqxmd.com/read/22834925/morphometric-analysis-of-anatomical-implant-forms-for-minimally-invasive-acetabular-fracture-osteosynthesis
#5
Dirk Maier, Lukas Kamer, Hansrudi Noser, Zoran Stankovic, Andreas Guth, Peter Bäurle, Norbert P Südkamp, Wolfgang Köstler
INTRODUCTION: Anatomical implants enable minimally invasive osteosynthesis (MIO) and represent ideal complements of computer-assisted surgical workflows. This 3D morphometric study analyzes anatomical implant forms (AIF) for acetabular fracture osteosynthesis (AFO). MATERIALS AND METHODS: Three-dimensional pelvis models were created from clinical CT data of 99 European-Caucasian patients (50 females, 49 males). The mean age of the patients was 60.1 years (range: 20-89; SD 10...
2012: Computer Aided Surgery: Official Journal of the International Society for Computer Aided Surgery
https://www.readbyqxmd.com/read/21647861/morphologic-differences-between-the-hips-of-chinese-women-and-white-women-could-they-account-for-the-ethnic-difference-in-the-prevalence-of-hip-osteoarthritis
#6
COMPARATIVE STUDY
Marcel Dudda, Young-Jo Kim, Yuqing Zhang, Michael C Nevitt, Ling Xu, Jingbo Niu, Joyce Goggins, Michael Doherty, David T Felson
OBJECTIVE: Hip osteoarthritis (OA) is a common disabling disease, which has a much higher prevalence in whites than in Asians. The reasons for this ethnic difference in prevalence are unknown. Hip OA is often thought to be secondary to morphologic abnormalities. This study was undertaken to examine whether particular abnormalities predisposing to hip OA occur more frequently in whites and whether these differences in hip shape account for differences in the prevalence of OA. METHODS: A morphometric study was performed on 400 hips of 200 female participants without OA from 2 studies, the Beijing OA Study and the Study of Osteoporotic Fractures from the US...
October 2011: Arthritis and Rheumatism
https://www.readbyqxmd.com/read/21323915/ontogenetic-changes-in-the-internal-and-external-morphology-of-the-ilium-in-modern-humans
#7
Richard Abel, Gabriele A Macho
Trabecular architecture forms an important structural component of bone and, depending on the loading conditions encountered during life, is organised in a systematic, bone- and species-specific manner. However, recent studies suggested that gross trabecular arrangement (e.g. density distribution), like overall bone shape, is predetermined and/or affected by factors other than loading and perhaps less plastic than commonly assumed. To explore this issue further, the present cross-sectional ontogenetic study investigated morphological changes in external bone shape in relation to changes in trabecular bundle orientation and anisotropy...
March 2011: Journal of Anatomy
https://www.readbyqxmd.com/read/20740259/morphometric-assessment-of-the-canine-hip-joint-using-the-acetabular-angle-of-retrotorsion
#8
B Doskarova, M Kyllar, V Paral
Morphometric assessment of the canine hip joint using acetabular angle of retrotorsion was used in this study. The aim of our study was to compare the acetabular angle of retrotorsion (AAR) with values of the Norberg angle (NA) and the hip score (HS) in the Leonberger dog breed and to determine the cut-off point of AAR that distinguish between normal and dysplastic hip status on the basis of Fédération Cynologique Internationale (FCI) hip evaluation. Retrospective analysis of NA and AAR was measured from standard ventrodorsal pelvic radiographs with extended femurs in 387 Leonberger dogs (141 males and 246 females) from 18 to 63 months of age, which were then divided into five age-groups...
2010: Veterinary and Comparative Orthopaedics and Traumatology: V.C.O.T
https://www.readbyqxmd.com/read/20733422/morphometric-analysis-of-the-femur-in-cerebral-palsy-3-dimensional-ct-study
#9
Shinichi Gose, Takashi Sakai, Toru Shibata, Tsuyoshi Murase, Hideki Yoshikawa, Kazuomi Sugamoto
BACKGROUND: The cause of hip disorder in cerebral palsy (CP) has been thought to involve muscle imbalance, flexion, and adduction contracture of the hip joint, acetabular dysplasia, and femoral growth abnormalities. The aim of this study was to quantitatively evaluate the 3-dimensional femoral geometry and subluxation/dislocation of the hip in spastic CP using 3D-CT reconstructed images of the pelvis and the femur, focusing on the femoral growth abnormalities in CP. METHODS: Between June 2006 and September 2009, 186 hips in 93 bilateral spastic CP patients, including spastic diplegia (SD) in 73 patients and spastic quadriplegia (SQ) in 20 patients, who had not received any surgical treatment, were investigated using 3D-CT at our hospital...
September 2010: Journal of Pediatric Orthopedics
https://www.readbyqxmd.com/read/19934706/morphometric-analysis-of-acetabular-dysplasia-in-cerebral-palsy-three-dimensional-ct-study
#10
Shinichi Gose, Takashi Sakai, Toru Shibata, Tsuyoshi Murase, Hideki Yoshikawa, Kazuomi Sugamoto
BACKGROUND: Three-dimensional computed tomography (3D-CT) eliminates the positioning errors and allows the clinician to more accurately assess the radiographic parameters present. To elucidate the 3D geometry of the acetabulum and the extent of hip subluxation/dislocation in patients with cerebral palsy (CP), quantitative morphometric analysis was performed using 3D-CT data. METHODS: We evaluated 150 hips in 75 patients with bilateral spastic CP. The mean age of the patients was 5...
December 2009: Journal of Pediatric Orthopedics
https://www.readbyqxmd.com/read/18276182/the-shape-of-the-acetabular-cartilage-surface-a-geometric-morphometric-study-using-three-dimensional-scanning
#11
Dongyun Gu, Yazhu Chen, Kerong Dai, Su Zhang, Jianbin Yuan
The acetabular cartilage surface plays an important role in hip joint biomechanics, locomotion and lubrication, but few studies has focused on its geometric morphometry. The aim of this study was to present a novel, accurate mathematical representation of the acetabular cartilage surface based on a new method, combined with a reverse engineering technique, surface-fitting algorithms and mathematical curve surface theory. By using a three-dimensional (3D) laser scanner, a 3D triangulated mesh surface approximation of acetabular cartilage was created...
October 2008: Medical Engineering & Physics
https://www.readbyqxmd.com/read/16336719/biological-variation-between-two-brazilian-geographical-isolates-of-echinostoma-paraensei
#12
A Maldonado Júnior, B K Zeitone, L A Amado, I F Rosa, J R Machado-Silva, R M Lanfredi
The biological behaviour and morphometric data from two allopatric isolates of Echinostoma paraensei (Rio Bonito - RB and Sumidouro - SU) collected from naturally infected Nectomys squamipes from two secluded Atlantic Forest fragments were studied. Mice that had been experimentally infected with ten encysted metacercariae of each isolate were monitored weekly in two trials to analyse worm burden and the kinetics of worm distribution along the intestine. The total number of uterine eggs, wet weights and measurements of the worms and body, acetabulum, testes and ovaries were also analysed...
December 2005: Journal of Helminthology
https://www.readbyqxmd.com/read/15645158/potential-of-p40-plastination-for-morphometric-hip-measurements
#13
B Genser-Strobl, M C Sora
Total hip replacement has become one of the most successful surgical operations over the past 25 years. The duration of a total hip prosthesis depends on primary stability, and many studies have tried precisely to evaluate hip joint morphology to obtain excellent contact between bone and prosthetic component. This study performed a morphometric analysis of the human hip joint using, for the first time, the P40 plastination procedure. We cut 42 hip joint compounds into slices 3 mm thick; for exact distance measuring the sections were scanned into the computer...
April 2005: Surgical and Radiologic Anatomy: SRA
https://www.readbyqxmd.com/read/10686816/-biomechanical-significance-of-the-acetabular-roof-and-its-reaction-to-mechanical-injury
#14
N Domazet, D Starović, R Nedeljković
INTRODUCTION: The introduction of morphometry into the quantitative analysis of the bone system and functional adaptation of acetabulum to mechanical damages and injuries enabled a relatively simple and acceptable examination of morphological acetabular changes in patients with damaged hip joints. Measurements of the depth and form of acetabulum can be done by radiological methods, computerized tomography and ultrasound (1-9). AIM OF STUDY: The aim of the study was to obtain data on the behaviour of acetabular roof, the so-called "eyebrow", by morphometric analyses during different mechanical injuries...
November 1999: Srpski Arhiv za Celokupno Lekarstvo
https://www.readbyqxmd.com/read/9851268/acetabular-dysplasia-and-hip-osteoarthritis-in-britain-and-japan
#15
N Yoshimura, L Campbell, T Hashimoto, H Kinoshita, T Okayasu, C Wilman, D Coggon, P Croft, C Cooper
OBJECTIVE: Geographic differences in the prevalence of hip osteoarthritis (OA) have been ascribed to differences in the frequency of acetabular dysplasia among different ethnic groups. However, there are few data on the shape of the acetabulum in various populations around the world. We examined this issue in samples of pelvic radiographs from Britain and Japan. METHODS: Measurements were made on the pelvic radiographs of 1303 men and 195 women, aged 60-75 yr, who attended for i...
November 1998: British Journal of Rheumatology
https://www.readbyqxmd.com/read/8420399/morphometric-changes-in-growth-of-the-rat-pelvis-after-papain-administration
#16
A D Dixon, P T Gakunga
The proteolytic enzyme, papain, was given systematically to evaluate the short- and long-term effects of inhibition of endochondral bone formation on pelvic growth, with emphasis on the innominate bone. Ninety-eight Lewis-strain male rats, used concurrently for craniofacial growth studies, were divided into two groups. Thirty rats from Group I (n = 48) received 2% crude papain i.p. daily from 25-40 days-of-age and were euthanized at 40, 54, and 70 days-of-age. Thirty-five rats from Group II (n = 50) were given papain at the same dose from 25-70 days-of-age and were euthanized at 26, 40, 54, 70, and 120 days...
February 1993: Anatomical Record
https://www.readbyqxmd.com/read/8357689/effect-of-direct-current-stimulation-on-triradiate-physeal-cartilage-in-vivo-study-in-young-rabbits
#17
N Takei, M Akai
Electrical stimulation with 8 microA direct current was applied to the triradiate physeal cartilage of young rabbits for periods of 3, 4, and 5 weeks. The effect was evaluated by morphometric measurement and histological observation. We tried to improve some previously described technical problems (e.g., movement of electrode during experiment) in this model of the growing acetabulum. Statistically significant differences in acetabular depth were found between the experimental and the control side in the 3-week group, but no obvious differences were found among the other measurements...
1993: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/7091821/developing-coxal-joint-of-the-dog-gross-morphometric-and-pathologic-observations
#18
M J Shively, D C Van Sickle
The growth and development of the proximal parts of femurs and the acetabula were studied in 32 English Pointers. The dogs were allotted to 8 age groups, birth through 9 months of age. Dogs were euthanatized, and at necropsy, 6 linear measurements were made on the proximal part of each femur: the cranial-caudal and the dorsal-ventral diameters of the femoral head, and the widths of the articular surface of the head from the center of the fovea to the cranial, caudal, dorsal, and ventral articular margins. Also 7 linear measurements were made on each acetabulum, including the cranial-caudal and the dorsal-ventral diameters, the length and width of the acetabular fossa, and the width of the lunate surface from the acetabular lip to the acetabular fossa in 3 places...
February 1982: American Journal of Veterinary Research
https://www.readbyqxmd.com/read/3188854/acetabular-dysplasia-in-the-rat-induced-by-injury-to-the-triradiate-growth-cartilage
#19
E Gil Garay, E Delgado Baeza, A Serrada Hierro
An extraarticular lesion of the physeal component of the acetabular roof was performed by thermal cautery in young Wistar rats. Seventy-four animals were studied. The effects of the lesion on the pelvis, the hip joint, and the femur were analyzed during a 14-week period by radiographic, gross morphologic, morphometric, and histologic methods. Most hips developed dysplasia with a shallow and deformed acetabulum and a deformed and underdeveloped femoral head.
October 1988: Acta Orthopaedica Scandinavica
https://www.readbyqxmd.com/read/3150709/morphometric-study-on-development-of-fetal-hip
#20
S J Ji, W D Liu, R X Ma, E G Kang
No abstract text is available yet for this article.
October 1988: Chinese Medical Journal
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