scholarly journals Obturator Internus and Obturator Externus Strain in a High School Quarterback

2015 ◽  
Vol 6 (3) ◽  
Author(s):  
Morteza Khodaee ◽  
Daniel Jones ◽  
Jack Spittler
Keyword(s):  
High School ◽  
Obturator Externus ◽  
Obturator Internus

scholarly journals Obturator internus and externus muscle abscess caused by methicillin-resistant Staphylococcus aureus in a 6-year-old boy: A case report

2021 ◽  
Vol 9 ◽  
pp. 2050313X2110443
Author(s):  
Mawanane Hewa Aruna Devapriya De Silva ◽  
Janath Liyanage ◽  
Chanika Roshini Kulatunge ◽  
Bangirallage Dhanawardana
Keyword(s):  
Staphylococcus Aureus ◽  
Methicillin Resistant Staphylococcus Aureus ◽  
Rare Condition ◽  
Tropical Country ◽  
Methicillin Resistant ◽  
Obturator Externus ◽  
Obturator Internus ◽  
Clinical Triad ◽  
The Right ◽  
High Index Of Suspicion

Obturator abscess is a rare condition in children which usually occurs commonly in tropical countries. Because of its rarity, vague symptomatology and a lack of focus about this condition, the diagnosis of obturator abscess is commonly delayed or missed. Hence, physicians should be familiar with this condition and have a high index of suspicion when a patient presents with fever, pain in the thigh, hip or abdomen and a limp on the affected side which are considered as the classic clinical triad of obturator abscess. Herein, we present a 6-year-old previously healthy Russian boy who was on holiday in Sri Lanka. He presented on the third day of the fever associated with pain in the right thigh and abdomen. This is the first reported case of an obturator externus muscle abscess due to methicillin-resistant Staphylococcus aureus in a European boy visiting a tropical country.

scholarly journals Muscle Spindle Density of Lateral Rotators of the Thigh in Japanese Macaques and a Gibbon

2019 ◽  
Vol 208 (1-2) ◽  
pp. 1-12
Author(s):  
Sawa Takeuchi ◽  
Eishi Hirasaki ◽  
Hiroo Kumakura
Keyword(s):  
Muscle Spindle ◽  
Hip Joint ◽  
Muscle Length ◽  
Muscle Spindles ◽  
Functional Differentiation ◽  
Japanese Macaques ◽  
Obturator Externus ◽  
Obturator Internus ◽  
Obturator Internus Muscle ◽  
Species Specific

We examined the six small lateral rotators of the hip joint, which is one of the most flexible joints and allows kinematically complex motions of the hindlimb, to elucidate the functional differentiation among these muscles and to test the hypothesis that species-specific characteristics in hindlimb use during locomotion are reflected in the muscle spindle density and in other parameters of the deep small hip joint rotators. For these purposes, we estimated the number of muscle spindles of the superior gemellus muscle (SG), inferior gemellus muscle, quadratus femoris muscle, obturator internus muscle (OI), obturator externus muscle, and piriformis muscle in three Japanese macaques and a gibbon, using 30-µm-thick serial sections throughout each muscle length after azan staining. The numbers of muscle spindles per 10,000 muscle fibers were determined to compare inter-muscle variation. The spindle density was highest in the SG and lowest in the OI in the Japanese macaques, suggesting that the SG, which is attached to the tendon of the OI, functions as a kinesiological monitor of the OI. On the other hand, SG the was missing in the gibbon, and the OI in the gibbon contained more spindles than that in the Japanese macaques. This suggests that the SG and the OI fused into one muscle in the gibbon. We postulate that the relative importance of the deep small hip rotator muscles differs between the Japanese macaques and gibbon and that the gibbon’s muscles are less differentiated in terms of the spindle density, probably because this brachiating species uses its hindlimbs less frequently.

scholarly journals Anatomy of piriformis, obturator internus and obturator externus

2010 ◽  
Vol 92-B (9) ◽  
pp. 1317-1324 ◽  
Author(s):  
L. B. Solomon ◽  
Y. C. Lee ◽  
S. A. Callary ◽  
M. Beck ◽  
D. W. Howie
Keyword(s):  
Obturator Externus ◽  
Obturator Internus

The SPAIRE Technique Allows Sparing of the Piriformis and Obturator Internus in a Modified Posterior Approach to the Hip

2017 ◽  
Vol 27 (2) ◽  
pp. 205-209 ◽  
Author(s):  
Richard J. Hanly ◽  
Sabrina Sokolowski ◽  
Andrew John Timperley
Keyword(s):  
Posterior Approach ◽  
Muscle Power ◽  
Senior Author ◽  
Technical Description ◽  
Obturator Externus ◽  
Obturator Internus ◽  
Hip Stability ◽  
Ongoing Work ◽  
Hip Replacements ◽  
Muscle Sparing

Introduction The Sparing Piriformis and Internus, Repair Externus (SPAIRE) technique allows a muscle sparing mini-posterior approach to the hip. Method We present in this article a description of an adaptation of the familiar posterior approach (PA) in which the only tendon released is obturator externus. Termed SPAIRE, this muscle sparing technique enables preservation of the piriformis tendon and conjoint insertion of obturator internus and the gemelli. The technical description allows for safe and reliable replication by any surgeon familiar with the posterior approach (PA) to the hip without reliance on additional equipment, and without compromising the ability to convert into a more extensile approach. Conclusions This technical description and brief discussion of rationale outlines the ongoing work of the authors in developing the SPAIRE technique as part of the spectrum of the posterior approach to the hip. The senior author now uses this technique routinely for total hip replacements and hemiarthroplasty. Patients are mobilised with no postoperative restrictions whatsoever. Other potential advantages include improved gait, more anatomical restoration of hip function, and enhanced stability. Projects have been initiated in our unit to objectively assess the possible clinical advantages relating to use of the SPAIRE technique using gait analysis, objective measurement of muscle power and studies of hip stability.

scholarly journals Impacts of external rotators and the ischiofemoral ligament on preventing excessive internal hip rotation: a cadaveric study

2022 ◽  
Vol 17 (1) ◽  
Author(s):  
Kazuyoshi Baba ◽  
Daisuke Chiba ◽  
Yu Mori ◽  
Yoshiyuki Kuwahara ◽  
Atsushi Kogure ◽  
...  
Keyword(s):  
Internal Rotation ◽  
Circular Plate ◽  
Hip Joint ◽  
Joint Rotation ◽  
Rotation Direction ◽  
Obturator Externus ◽  
Obturator Internus ◽  
The Right ◽  
Hip Flexion ◽  
External Rotator

Abstract Background This study examined the biomechanics of preventing excessive internal hip joint rotation related to the hip flexion angle. Method An intramedullary nail with a circular plate equipped with a protractor was installed in the femur of nine normal hips. The circular plate was pulled by 3.15 Nm of force in the internal rotation direction. The external rotators were individually resected, finally cutting the ischiofemoral ligament. The cutting order of the external rotators differed on each side to individually determine the internal rotation resistance. The external rotators were resected from the piriformis to the obturator externus in the right hips and the reverse order in the left hips. Traction was performed after excising each muscle and ischiofemoral ligament. Measurements were taken at 0°, 30°, and 60° of hip flexion, and the differences from baseline were calculated. Results For the right hip measurements, the piriformis and ischiofemoral ligament resection significantly differed at 0° of flexion (p = 0.02), each external rotator and the ischiofemoral ligament resections significantly differed at 30° of flexion (p < 0.01), and the ischiofemoral ligament and piriformis and inferior gemellus resections significantly differed at 60° of flexion (p = 0.04 and p = 0.02, respectively). In the left hips, the ischiofemoral ligament and obturator externus, inferior gemellus, and obturator internus resections significantly differed at 0° of flexion (p < 0.01, p < 0.01, and p = 0.01, respectively), as did each external rotator and the ischiofemoral ligament resections at 30° of flexion (p < 0.01). Conclusion The ischiofemoral ligament primarily restricted the internal rotation of the hip joint. The piriformis and obturator internus may restrict internal rotation at 0° and 60° of flexion.

Cosmetology treatments on human hair: An SEM study

1996 ◽  
Vol 54 ◽  
pp. 940-941
Author(s):  
D.F. Bowling
Keyword(s):  
High School ◽  
High Resolution ◽  
Human Hair ◽  
Optical Microscope ◽  
Convincing Evidence ◽  
Brightness Contrast ◽  
Sem Study

High school cosmetology students study the methods and effects of various human hair treatments, including permanents, straightening, conditioning, coloring and cutting. Although they are provided with textbook examples of overtreatment and numerous hair disorders and diseases, a view of an individual hair at the high resolution offered by an SEM provides convincing evidence of the hair‘s altered structure. Magnifications up to 2000X provide dramatic differences in perspective. A good quality classroom optical microscope can be very informative at lower resolutions.Students in a cosmetology class are initially split into two groups. One group is taught basic controls on the SEM (focus, magnification, brightness, contrast, specimen X, Y, and Z axis movements). A healthy, untreated piece of hair is initially examined on the SEM The second group cements a piece of their own hair on a stub. The samples are dryed quickly using heat or vacuum while the groups trade places and activities.

Articulatory Intervention for the Visually Impaired

1979 ◽  
Vol 10 (3) ◽  
pp. 139-144
Author(s):  
Cheri L. Florance ◽  
Judith O’Keefe
Keyword(s):  
High School ◽  
High School Students ◽  
Behavior Change ◽  
Visually Impaired ◽  
School Students ◽  
Handicapped Children ◽  
Paired Stimuli ◽  
Visually Handicapped ◽  
Parent Program

A modification of the Paired-Stimuli Parent Program (Florance, 1977) was adapted for the treatment of articulatory errors of visually handicapped children. Blind high school students served as clinical aides. A discussion of treatment methodology, and the results of administrating the program to 32 children, including a two-year follow-up evaluation to measure permanence of behavior change, is presented.

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