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Measurement of lumbosacral angle in normal radiographs: a retrospective study in southeast Nigeria.

Okpala F - Ann Med Health Sci Res (2014)

Bottom Line: LSA varied between 18° and 71°.With a 95.0 confidence interval of 43.3-45.6°, the mean (standard deviation) was 44.5 (9.9)° and showed no significant variation with sex and between various age groups; it compared favorably (though with small difference) with some of the literature values currently in use.This study had established the normal lordosis and the possible values at which to consider hypo-lordosis (below 15°), and hyper-lordosis (above 75°) in our population.

View Article: PubMed Central - PubMed

Affiliation: Department of Radiology, Federal Teaching Hospital Abakaliki, Ebonyi State, Nigeria.

ABSTRACT

Background: A retrospective study of lumbosacral angle (LSA) in normal lateral supine lumbosacral radiographs of 274 Nigerians (aged 15-74 years) of Southeast region. A supine lateral lumbar spine radiograph is a very accurate means of measuring lordotic angles. The LSA is one of such angles, and can be used in the investigation, treatment and follow-up of low back disorders. Little is known about what the normal value for our population is and therefore, what constitutes hypo-/hyper-lordosis; most of the data in use in medical practice are based on studies on other races.

Aim: To quantify the normal LSA in our population.

Materials and methods: LSA was measured by the Ferguson's technique and the data analyzed with SPSS Statistics version 17.0 (Chicago IL, USA).

Results: LSA varied between 18° and 71°. With a 95.0 confidence interval of 43.3-45.6°, the mean (standard deviation) was 44.5 (9.9)° and showed no significant variation with sex and between various age groups; it compared favorably (though with small difference) with some of the literature values currently in use.

Conclusion: This study had established the normal lordosis and the possible values at which to consider hypo-lordosis (below 15°), and hyper-lordosis (above 75°) in our population. Also established is that the development of lumbar lordosis ceases at spinal maturity, and that in normal lumbar lordosis measurement, the retrospective approach is a credible alternative to the prospective method.

No MeSH data available.


Related in: MedlinePlus

Bar chart of the mean lumbosacral angle by gender
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Figure 3: Bar chart of the mean lumbosacral angle by gender

Mentions: A total of 274 normal lateral recumbent lumbosacral spine radiographs were assessed (males = 132; females = 142). The mean age (SD) of the patients was 35.2 (11.7) years [Figure 2]; 34.1 (11.1) years for the males, and 36.3 (12.1) years for the females. There was no significant difference between the mean ages of the males and females (t = 1.55, P = 0.12). With a 95.0 CI of 43.3-45.6°, the LSA was 44.5 (9.9)° (range = 18-71°), and showed no significant variation with sex [Table 1, Figure 3], nor between the various age groups [Figure 4, Table 2]. There was significant difference between this LSA and all the literature values cited in this study [Table 3]; the differences were however small in most cases [Table 4]. It can therefore be stated that the LSA obtained in this study compared favorably with most of the literature values cited in this study, irrespective of the fact that some of these literature values were obtained in prospective studies in either erect or recumbent positions.


Measurement of lumbosacral angle in normal radiographs: a retrospective study in southeast Nigeria.

Okpala F - Ann Med Health Sci Res (2014)

Bar chart of the mean lumbosacral angle by gender
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4199170&req=5

Figure 3: Bar chart of the mean lumbosacral angle by gender
Mentions: A total of 274 normal lateral recumbent lumbosacral spine radiographs were assessed (males = 132; females = 142). The mean age (SD) of the patients was 35.2 (11.7) years [Figure 2]; 34.1 (11.1) years for the males, and 36.3 (12.1) years for the females. There was no significant difference between the mean ages of the males and females (t = 1.55, P = 0.12). With a 95.0 CI of 43.3-45.6°, the LSA was 44.5 (9.9)° (range = 18-71°), and showed no significant variation with sex [Table 1, Figure 3], nor between the various age groups [Figure 4, Table 2]. There was significant difference between this LSA and all the literature values cited in this study [Table 3]; the differences were however small in most cases [Table 4]. It can therefore be stated that the LSA obtained in this study compared favorably with most of the literature values cited in this study, irrespective of the fact that some of these literature values were obtained in prospective studies in either erect or recumbent positions.

Bottom Line: LSA varied between 18° and 71°.With a 95.0 confidence interval of 43.3-45.6°, the mean (standard deviation) was 44.5 (9.9)° and showed no significant variation with sex and between various age groups; it compared favorably (though with small difference) with some of the literature values currently in use.This study had established the normal lordosis and the possible values at which to consider hypo-lordosis (below 15°), and hyper-lordosis (above 75°) in our population.

View Article: PubMed Central - PubMed

Affiliation: Department of Radiology, Federal Teaching Hospital Abakaliki, Ebonyi State, Nigeria.

ABSTRACT

Background: A retrospective study of lumbosacral angle (LSA) in normal lateral supine lumbosacral radiographs of 274 Nigerians (aged 15-74 years) of Southeast region. A supine lateral lumbar spine radiograph is a very accurate means of measuring lordotic angles. The LSA is one of such angles, and can be used in the investigation, treatment and follow-up of low back disorders. Little is known about what the normal value for our population is and therefore, what constitutes hypo-/hyper-lordosis; most of the data in use in medical practice are based on studies on other races.

Aim: To quantify the normal LSA in our population.

Materials and methods: LSA was measured by the Ferguson's technique and the data analyzed with SPSS Statistics version 17.0 (Chicago IL, USA).

Results: LSA varied between 18° and 71°. With a 95.0 confidence interval of 43.3-45.6°, the mean (standard deviation) was 44.5 (9.9)° and showed no significant variation with sex and between various age groups; it compared favorably (though with small difference) with some of the literature values currently in use.

Conclusion: This study had established the normal lordosis and the possible values at which to consider hypo-lordosis (below 15°), and hyper-lordosis (above 75°) in our population. Also established is that the development of lumbar lordosis ceases at spinal maturity, and that in normal lumbar lordosis measurement, the retrospective approach is a credible alternative to the prospective method.

No MeSH data available.


Related in: MedlinePlus