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Iliac Crest

The Iliac Crest is the curved upper border of the ilium, the largest part of the hipbone.
It serves as an important landmark for anatomical and surgical procedures involving the pelvis and lower abdomen.
The Iliac Crest plays a crucial role in the attachment of muscles that control hip and leg movement, as well as provide attachment sites for key ligaments.
Understanding the anatomy and fuction of the Iliac Crest is essentail for clinicians performing procedures such as bone grafts, injetions, and physical examintations of the hip and pelvis region.

Most cited protocols related to «Iliac Crest»

Total body imaging was acquired using the GE Healthcare Lunar iDXA and analyzed using enCORE software version 13.6. Daily quality control scans were acquired during the study period. No hardware or software changes were made during the course of the trial. Subjects were scanned using standard imaging and positioning protocols. For measuring android fat, a region-of-interest is automatically defined whose caudal limit is placed at the top of the iliac crest and its height is set to 20% of the distance from the top of the iliac crest to the base of the skull to define its cephalad limit (Figure 1). Abdominal SF and VF were estimated within the android region. Fat mass data from DXA was transformed into CT adipose tissue volume using a constant correction factor (0.94 g/cm3). This constant is generally consistent with the density of adipose tissue (29 (link)) and represents a value that was optimized in our training algorithm and not altered in the validation procedure.
Publication 2012
Abdomen Base of Skull Cone-Beam Computed Tomography Human Body Iliac Crest Tissue, Adipose
Anthropometric measurement of each subject was performed by trained nurses in the morning after fasting for at least 8 h. Body height was recorded to the nearest 0.5 cm and body weight to the nearest 0.1 kg. BMI was defined as body weight (kilograms) divided by the square of body height (meters). WC-IC was measured in the horizontal plane at the superior border of the right iliac crest. WC-mid was measured in the horizontal plane midway between lowest rib and the iliac crest. Both WC-IC and WC-mid were measured to the nearest 0.1 cm at the end of a normal expiration. Before recording the measurement, the nurse would ensure that the tape was snug but did not compress the skin and was parallel to the floor. The reproducibility was assessed. WC-IC and WC-mid were measured repeatedly in 10 men and 10 women by 3 trained nurses on 3 consecutive days. The coefficients of variation for WC-IC were 0.8% (range 0.5–1.7%) for women and 0.6% (range 0.3–1.4%) for men. The coefficients of variation for WC-mid were 0.4% (range 0–0.7%) for men and 0.9% (range 0.5–1.9%) for women.
Publication 2013
Body Height Body Weight Iliac Crest Nurses Skin Woman
A tri-axial accelerometer (Hookie AM20, Traxmeet Ltd, Espoo, Finland) was attached to the hip-mounted elastic belt at the level of the iliac crest. The accelerometer had ± 16 g measurement range and acceleration was measured at 100 Hz sampling frequency. Because the indoor track has banked turns only to left, it might have effect on the accelerometer output. Thus the accelerometer was placed either at the right (r-hip) or left side (l-hip) of the hip and the side was randomly selected. The left side (i.e. inner side of curve) was assigned to 13 participants and the right side (i.e. outer side of curve) to 16 participants. In addition, all participants carried one accelerometer in the middle of the back (mid) to emulate a situation where misplacement was the longest in terms of the preferred lateral location.
During the test procedure, VO2 was continuously measured with a portable breath-by-breath mobile metabolic analyser (Oxycon, Carefusion, Yorba Linda, CA, USA) and the data were recorded with a telemetry system. The metabolic cart was calibrated before each test according the manufacturer’s instructions.
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Publication 2015
Acceleration CART protein, human Iliac Crest Telemetry
ActiGraph GT3X+ (ActiGraph, Pensacola, FL), a triaxial accelerometer, was used to measure the amount and frequency of movement of the children. The monitor is compact and lightweight, measuring 4.6 cm x 3.3 cm x 1.5 cm with a weight of 19 grams. The output includes activity counts (vertical X, horizontal Y and diagonal Z axes), vector magnitude, which is equal to the square root of ((amplitude X)2 + (amplitude Y)2 +(amplitude Z)2), and number of steps taken. The inclinometer feature of ActiGraph GT3X+ indicates subject position (1=standing; 2=lying down; 3=sitting) and identifies periods when the device has been removed (0=monitor off). Each sample was summed over a 60-second epoch. The ActiGraph monitors were affixed above the iliac crest of the right hip with an adjustable elastic belt. Data acquisition storage was set at 15-second epochs. Data were downloaded into Excel and collapsed into 60-second intervals to align with calorimeter minute-by-minute data.
Publication 2013
Actigraphy Child Cloning Vectors Epistropheus EPOCH protocol Iliac Crest Medical Devices Movement Plant Roots
During the HCHS/SOL baseline clinic visit, participants were asked to wear an Actical accelerometer (version B-1; model 198-0200-03) for one week. This Actical is an omnidirectional accelerometer, measuring 1.14″ × 1.45″ × 0.43″, weighing 16 grams, and powered by a CR2025 lithium battery. The device had 32MB of non-volatile flash memory, a sampling rate of 32 Hz, sensitive to motion from 0.05-2.0G, and a bandwidth of 0.035-3.5 Hz. A microprocessor converted accelerations to a unit called counts over a given epoch or time period. Prior studies indicate that the Actical has acceptable technical reliability for counts (9 (link), 38 (link)). More detailed technical specifications are available elsewhere (17 (link)).
Participants were fitted with a belt and left the clinic visit wearing the accelerometer. They were instructed to continue to wear it above the iliac crest on the right side, the location most sensitive to vertical movements consistent with ambulation. Participants were told to undertake their usual activities for the following week while wearing the accelerometer, and to remove it only for swimming, showering, and sleeping. They were provided written instructions and a phone number to call if any questions arose. Study staff called participants a few days later to answer questions, to ensure the instructions were clear, and to remind them to wear the accelerometer. Participants returned the accelerometer using a padded pre-paid envelope. Upon receipt, staff downloaded the data and initialized the accelerometer for reuse. Participation was defined as returning the Actical and having any recorded wear time.
The Actical was programmed to capture accelerations in counts and steps in one-minute epochs. The four study sites programmed the monitor to start at varying times between 5:00am of the clinic visit day and 5:00am of the following day. To standardize, we included time for all sites beginning at 5:00am the morning following the clinic visit and truncated data at midnight on day 6 of the wear period, providing a consistent maximum 6-day wear period across all study participants. We then performed a systematic review of count patterns to identify and exclude days that indicated spurious recordings. Non-wear was defined as consecutive zero counts for at least 90 minutes (window 1), allowing for short time intervals with nonzero counts lasting up to 2 minutes if no counts were detected during both the 30 minutes (window 2) upstream and downstream from that interval; any nonzero counts except the allowed short intervals were considered as wear time (3 (link)). Adherence was defined as >=10 hours/day of wear time for at least 3 of 6 possible days of wear. The >=10 hours/day criteria is often used in other studies (36 (link)), and the 3 of 6 days was chosen to represent at least 50% of the maximum days of wear.
The intensity levels were defined as follows (5 (link), 7 (link), 40 (link)): vigorous >=3962 counts/minute, moderate 1535-3961 counts/minute, light 100-1534 counts/minute, and sedentary <100 counts/minute. Using the accelerometer data, we operationalized meeting the 2008 US physical activity guidelines using their terminology as (37 ):

High: moderate physical activity>=300 minutes/week, vigorous physical activity >=150 minutes/week, or a combination of the two (multiplying vigorous by 2 and summing to obtain >=300 minutes/week) in >=10 minute bouts

Medium activity: moderate physical activity 150 to <300 minutes/week, vigorous physical activity 75 to <150 minutes/week, or a combination of the two (multiplying vigorous by 2 and summing to obtain 150 to <300 minutes/week) in >=10 minute bouts

Not meeting physical activity recommendations

Since participants contributed between 3 and 6 days of adherent accelerometer data, the physical activity guidelines were pro-rated for the proportion of a week with available data. This assumed that the remainder of days within the week had the same average level of physical activity as the adherent days.
Publication 2014
Acceleration Clinic Visits EPOCH protocol Hypochondroplasia Iliac Crest Light Lithium Medical Devices Memory Movement One-Step dentin bonding system

Most recents protocols related to «Iliac Crest»

A case report form was developed to record general characteristics, clinical diagnosis, and biochemical examination. Waist circumference (WC) was measured at the middle point between the costal margin and iliac crest. BMI was calculated as body weight in kilograms divided by body height in meters squared (kg/m2). Smoking habit was categorized as current smoking, ever smoking, or no smoking. Current smoking was determined when subjects were smoking currently and more than one cigarette daily in at least one year continuously. Ever smoking was determined when subjects smoked more than one cigarette daily, but had quitted smoking at least one year before. Drinking habit was categorized as current drinking, ever drinking, or no drinking. Current drinking was determined when subjects were drinking liquor, beer or wine currently in at least one year. Ever drinking was determined when subjects drank previously, but had quitted drinking at least one year before. History of lipid disorders included that plasma total cholesterol was ≥ 5.7 mmol/l, or low-density lipoprotein cholesterol (LDL-C) was ≥ 3.6 mmol/l, or high-density lipoprotein cholesterol (HDL-C) < 1.04 mmol/l, triglyceride was ≥ 1.7 mmol/l, or treatment with antihyperlipidemic agents due to hyperlipidemia. Hypertension was diagnosed by systolic blood pressure (SBP) ≥ 140 mmHg, or diastolic blood pressure (DBP) ≥ 90 mmHg, or being actively treated with anti-hypertension drugs. Diabetes mellitus was diagnosed by a fasting plasma glucose ≥ 7.0 mmol/l, or by a random plasma glucose ≥ 11.1 mmol/l, or when they were actively receiving therapy using insulin or oral medications for diabetes. Chronic kidney disease was defined as an estimated glomerular filtration rate (eGFR) < 60 ml/min/1.73 m2.
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Publication 2023
Amniotic Fluid Antihypertensive Agents Beer Body Height Body Weight Cholesterol Cholesterol, beta-Lipoprotein Chronic Kidney Diseases Costal Arch Diabetes Mellitus Glomerular Filtration Rate Glucose High Blood Pressures High Density Lipoprotein Cholesterol Hyperlipidemia Hypolipidemic Agents Iliac Crest Insulin Lipid Metabolism Disorders Pharmaceutical Preparations Plasma Pressure, Diastolic Systolic Pressure Therapeutics Triglycerides Waist Circumference Wine
The measurements of anthropometric attributes and biochemical profiles have been described previously [23 (link)]. In brief, we used a digital system (BW-2200; NAGATA Scale Co. Ltd., Tainan, Taiwan) to measure the subject’s body weight and height. Waist circumference (WC) was measured at the level of mid-distance between the bottom of the rib cage and the top of the iliac crest. Hip circumference was the distance around the largest part of the subject’s hips. Blood pressure was measured three times, with an interval of 3 min, after 10 min of rest. The averages of repeated measurements of systolic blood pressure (SBP) and diastolic blood pressure (DBP) were used for analyses. The fasting blood levels of total cholesterol, high-density lipoprotein cholesterol (HDL-C), low-density lipoprotein cholesterol (LDL-C), triglycerides (FTG), and glucose (FPG) were determined by an autoanalyzer (Toshiba TBA c16000; Toshiba Medical System, Holliston, MA, USA) with commercial kits (Denka Seiken, Tokyo, Japan).
We also used a structured questionnaire to collect personal histories of common diseases in adults and health behaviors. In the study, hypertension was defined as subjects who had physician-diagnosed hypertension or a history of taking antihypertensive medications. Hyperlipidemia was defined as subjects having been diagnosed with high blood lipids by a physician or having a history of taking lipid-lowering medications. DM was defined as FPG ≥ 126 mg/dL or the use of insulin or other hypoglycemic agents. Cigarette smoking and alcohol drinking were defined as having smoked cigarettes or drank alcohol-containing beverages at least 4 days per week during the past month before enrollment.
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Publication 2023
Adult Alcoholic Beverages Antihypertensive Agents BLOOD Blood Pressure Body Weight Cholesterol Cholesterol, beta-Lipoprotein Coxa Fingers Glucose High Blood Pressures High Density Lipoprotein Cholesterol Hyperlipidemia Hypoglycemic Agents Iliac Crest Insulin Lipid A Lipids Pharmaceutical Preparations Physicians Pressure, Diastolic Rib Cage Systolic Pressure Triglycerides Waist Circumference
Data from the placebo group of the REWIND trial were used for this analysis. Details of the REWIND trial are published elsewhere [14 (link), 15 (link)]. In brief, the REWIND trial was a global, multi-center, randomized, double-blind, placebo-controlled clinical trial. Participants with type 2 diabetes were aged ≥ 50 years with established CVD, aged ≥ 55 years with subclinical CVD, or aged ≥ 60 years with two or more CV risk factors. Participants (N = 9901) were randomized 1:1 to receive once-weekly subcutaneous injections of dulaglutide 1.5 mg or placebo in addition to the standard of care for diabetes and CVD of the specific country during the trial period of August 2011 to August 2018. Median follow-up was 5.4 years. All participants provided written and informed consent and the trial was conducted in accordance with the International Conference on Harmonization Guidelines for Good Clinical Practice and the Declaration of Helsinki.
Weight measurements were taken at baseline and throughout the trial annually as well as at the final study visit. Height, waist circumference, and hip circumference were measured at baseline and every 24 months throughout the trial as well as at the final study visit. To calculate BMI, body weight and height were measured. Body weight was measured using a calibrated scale (mechanical or digital). BMI was calculated as weight in kilograms divided by the square of height in meters. WC and hip circumference (HC) measurements were obtained with the patient in the standing position. WC was measured immediately above the iliac crest and HC at the maximal circumference of the buttocks, both in centimeters. WHR was calculated by dividing WC by HC.
The current analysis examined obesity measures, measured at baseline, as potential risk factors for four outcomes: MACE-3 (non-fatal myocardial infarction, non-fatal stroke, or death from CV causes including unknown causes), CVD-related mortality, all-cause mortality, and HF requiring hospitalization or urgent care. Potential CV outcomes and all deaths were adjudicated by an independent clinical endpoint committee that was masked to treatment assignment. Further adjudication criteria are published elsewhere [15 (link)].
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Publication 2023
Buttocks Cerebrovascular Accident Conferences Diabetes Mellitus Diabetes Mellitus, Non-Insulin-Dependent dulaglutide Fingers Hospitalization Iliac Crest Myocardial Infarction Myristica fragrans Obesity Patients Placebos Subcutaneous Injections Waist Circumference
As determined by the individual situation, an autogenous tricortical bone graft of appropriate size was harvested from the ipsilateral iliac crest. Cancellous bone was harvested with the smallest osteotome possible. A longitudinal dorsal incision was made lateral to the extensor hallucis longus tendon with an interface between the extensor hallucis longus tendon and the dorsalis pedis artery, both of which were retracted correspondingly. The soft tissue was distracted by a lamina spreader to expose the talonavicular and navicular-cuneiform joints. The talonavicular and navicular-cuneiform joints were distracted using a Hintermann distractor over separate K-wires. The articular surfaces were debrided in situ with cartilage shovels to the subchondral bone. A K-wire was used to drill the subchondral sclerotic bone plate into a favaginous condition for fusion. Then bite off the excess osteophyte from the lateral 4-corners. The plantar ligament and plantar soft tissue of the navicular are loosened with a sharp knife, leaving only the insertion point of the posterior tibial tendon. The whole debridement process created a relative space around the navicular bone. Subsequently, a periosteal detacher was pressed against the lateral bony protrusion of the navicular bone to rotate the bone outwards to the original top location. Once the reduction was deemed satisfactory by direct visualization, two to three crossing K-wires were used for temporary fixation. After the demonstration of the corrected medial longitudinal arch on the C-arm, the lateral half of the navicular bone (including the talonavicular and navicular-cuneiform joints involved in the necrotic lesion) was excised using an osteotome to form a broad dorsal trapezoid laterally and a rectangular longitudinal bone bed. And the modified tricortical iliac bone block was inserted into the space between the talus and the cuneiforms. Finally, two hollow lag screws and a dorsal LCP were used to arthrodese the talonavicular-cuneiform joints. A transverse Herbert screw was used (where needed) to fix the bone block and medial navicular bone. The wound was closed after packing the previously acquired cancellous bone to smooth the defect gaps.
Postoperatively, a protective non-weight bearing short-leg plaster cast was applied for 6 weeks, after which weight-bearing was gradually allowed as tolerated.
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Publication 2023
Arteries Arthrodesis Bone Diseases Bones Bone Transplantation Cancellous Bone Cartilage Debridement Dental Occlusion Drill Iliac Crest Ilium Joints Kirschner Wires Navicular Bone of Foot Necrosis Osteophyte Osteotomy Periosteum Plantar Plate Plaster Casts Scaphoid Bone Sclerosis Talus Tendons Tibia Tissues Trapezoid Bones Wounds
Changes in body composition are a normal part of ageing and often occur simultaneously with declines in physical function. Anthropometric measurements were made to provide a quantitative measure of body composition, obesity and body fat distribution that is related to overall health status and can be tracked over time. Standing height and weight were measured using standard techniques, BMI was computed as weight/height2 (kg/m2).
Waist and hip measurements were recorded using a SECA measuring tape. The waist was measured midway between the iliac crest and the costal margin (lower rib) while the hip circumference was measured at the widest circumference over the buttocks and below the iliac crest. Measurements were repeated twice. Waist-to-hip ratio was calculated as a measure of body fat distribution which is an important indicator of risk of cardiovascular disease [9 (link)]. Percentage body fat was also measured using the Bodystat 1500 MDD body composition analyser. This measures the amount of lean and fat mass that makes up total body weight.
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Publication 2023
Body Composition Body Fat Body Weight Buttocks Costal Arch Iliac Crest Measure, Body Obesity Physical Examination Waist-Hip Ratio

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More about "Iliac Crest"

The Iliac Crest, also known as the Hip Crest or Pelvic Crest, is a crucial anatomical structure located at the upper border of the Ilium, the largest part of the Hipbone.
This curved ridge serves as a vital landmark for various medical procedures involving the Pelvis and Lower Abdomen region.
The Iliac Crest plays a pivotal role in the attachment of numerous Muscles that control Hip and Leg Movement, as well as providing attachment sites for essential Ligaments.
Understanding the Anatomy and Function of the Iliac Crest is essential for Clinicians performing a wide range of procedures, such as Bone Grafts, Injections, and Physical Examinations of the Hip and Pelvis area.
Researchers studying the Iliac Crest can leverage AI-driven platforms like PubCompare.ai to optimize their research.
These tools can help locate relevant Protocols from Literature, Pre-prints, and Patents, as well as facilitate AI-driven Comparisons to identify the best Protocols and Products.
This can enhance the Reproducibility of Iliac Crest studies and contribute to advancing the field of Musculoskeletal Anatomy and Orthopedics.
When conducting Iliac Crest research, researchers may utilize various equipment and materials, such as Stadiometers for measuring Height, Fasting Blood Sugar (FBS) tests, Hemocytometers (HEM-705CP) for Cell Counting, Digital Scales (BC-418) for Body Composition Analysis, and Cell Culture Media (α-MEM) for in-vitro experiments.
Proper sterilization and preparation techniques, such as the use of Penicillin/Streptomycin antibiotics, are also crucial for maintaining the integrity of Iliac Crest studies.
By leveraging the latest research tools and techniques, scientists can deepen our understanding of the Iliac Crest's Anatomy, Function, and Clinical Relevance, ultimately leading to improved Patient Outcomes and Advancements in the Field of Musculoskeletal Health.