Related Experiment Video
Updated: Feb 11, 2026
11:45
Functional Interrogation of Adult Hypothalamic Neurogenesis with Focal Radiological Inhibition
Published on: November 14, 2013
12.6K
Spino-pelvic radiological parameters in normal Indian population
Roop Singh1, Sushil Kumar Yadav1, Sushma Sood2
1Department of Orthopaedic Surgery, Paraplegia & Rehabilitation, Pt. B.D. Sharma PGIMS, Rohtak 124001, Haryana, India.
SICOT-J
|May 1, 2018
Summary
This study establishes normal spino-pelvic alignment values for the Indian population. Significant differences in parameters like pelvic incidence (PI) and lumbar lordosis angle (LLA) were observed between males and females.
Area of Science:
- Orthopedics
- Radiology
- Spinal Anatomy
Background:
- Sagittal spino-pelvic alignment is crucial for managing spinal disorders.
- Understanding physiological spino-pelvic parameters is essential for accurate interpretation.
- Variations in these parameters can impact spinal health and treatment outcomes.
Purpose of the Study:
- To determine physiological values of spino-pelvic radiographic parameters in a healthy Indian population.
- To analyze variations in these parameters based on epidemiological data (e.g., sex).
- To investigate the interrelationships among various spino-pelvic parameters.
Main Methods:
- A cross-sectional study involving 50 healthy volunteers (29 males, 21 females) with no history of back pain.
- Standing sagittal spino-pelvic radiographs were obtained for all participants.
- Radiographic parameters were measured using specialized software, followed by statistical analysis.
Main Results:
- Mean pelvic incidence (PI) was 48.52 ± 8.99 and lumbar lordosis angle (LLA) was 58.78 ± 9.51.
- Significant sex-based differences were found in LLA, lumbo-sacral angle (LSA), sacral horizontal angle (SHA), sacral inclination angle (SIA), sacropelvic angle (PRS1), pelvisacral angle (PSA), and PI, with females generally showing higher values.
- PI showed significant positive correlations with LLA, pelvic angle (PA), pelvic overhang (PO), pelvic tilt (PT), sacrofemoral distance (SFD), SHA, and sacropelvic translation (SPT). LLA correlated positively with SHA and SIA. Both PI and LLA negatively correlated with PSA, pelvic thickness (PTH), and PRS1.
Conclusions:
- This study provides normative spino-pelvic radiographic parameter values for the asymptomatic Indian population.
- Significant sex-based differences in several spino-pelvic parameters were identified.
- The obtained values are comparable to international literature, with no significant differences noted between Indian, Brazilian, and Korean populations for pelvic parameters.
Related Concept Videos
01:26Distributions to Estimate Population Parameter
5.2K
The accurate values of population parameters such as population proportion, population mean, and population standard deviation (or variance) are usually unknown. These are fixed values that can only be estimated from the data collected from the samples. The estimates of each of these parameters are sample proportion, the sample mean, and sample standard deviation (or variance). To obtain the values of these sample statistics, data are required that have particular distribution and central...
5.2K
02:04Conservation of Small Populations
17.4K
Small population sizes put a species at extreme risk of extinction due to a lack of variation, and a consequent decrease in adaptability. This weakens the chances of survival under pressures such as climate change, competition from other species, or new diseases. Large populations are more likely to survive pressures such as these, as such populations are more likely to harbor individuals that have genetic variants that are adaptive under new stresses. Small populations are much less...
17.4K
01:25What is Population Genetics?
64.9K
A population is composed of members of the same species that simultaneously live and interact in the same area. When individuals in a population breed, they pass down their genes to their offspring. Many of these genes are polymorphic, meaning that they occur in multiple variants. Such variations of a gene are referred to as alleles. The collective set of all the alleles within a population is known as the gene pool.
64.9K
00:57Population Growth
28.7K
Population size is dynamic, increasing with birth rates and immigration, and decreasing with death rates and emigration. In ideal conditions with unlimited resources, populations can increase exponentially, which plots as a J-shaped growth rate curve of population size against time. This type of curve is characteristic of newly-introduced invasive species, or populations that have suffered catastrophic declines and are rebounding.
28.7K
01:30Radiological Investigation I: X-ray and CT
1.2K
Radiological investigations, including X-rays and computed tomography (CT) scans, are critical for diagnosing and evaluating various medical conditions. These imaging techniques provide valuable insights into the body's internal structures, aiding in the detection of abnormalities, assessment of disease progression, and development of treatment strategies. This article delves into two primary radiological investigations, chest X-rays and CT scans, outlining their purpose, procedures, and...
1.2K
01:26Muscles of the Pelvic Floor and Perineum
4.8K
The muscles of the pelvic floor and perineum are crucial for supporting the pelvic organs, controlling continence, and aiding in sexual function, childbirth, and core stability. They are typically divided into the superficial perineal layer and the deep pelvic floor layer.
Perineal Layer
The perineum is a diamond-shaped area below the pelvic diaphragm, divided into an anterior urogenital triangle that contains the external genitals and a posterior anal triangle housing the anus. The urogenital...
Perineal Layer
The perineum is a diamond-shaped area below the pelvic diaphragm, divided into an anterior urogenital triangle that contains the external genitals and a posterior anal triangle housing the anus. The urogenital...
4.8K