Somatic determinants of changes in selected body posture parameters in younger school-age children.

BACKGROUND: The aim of this study was to describe changes in selected parameters of body posture in children between 5 and 9 years old with diversified somatic structures. METHODS: The study was carried out in 2015 and then repeated in 2018 among 67 participants who had previously been observed to have scoliotic posture. Basic body weight and height measurements were taken, which were then used to calculate the body mass index. Posture tests were conducted using the photogrammetric method. RESULTS: Girls and boys were not significantly different in body dimensions. With age, the number of overweight boys and children with normal growth-weight proportions increased. Temporary differences in posture variables indicating abnormalities were small. CONCLUSIONS: There were no significant differences in somatic parameters between the girls and the boys. Those children with a slender body structure had the most abnormalities in the coronal plane. On the other hand, changes in spinal position in the sagittal plane were more frequent in overweight children. Relations were noted between the compensation index in the sagittal plane and deviation of the trunk inclination, the maximum deviation of the line of the spinous processes, and the angle of the shoulder line in the coronal plane and body mass index values were noted.

Postural stability of 5-year-old girls and boys with different body heights.

BACKGROUND: Postural stability is one of the determinants of proper body posture and a condition for developing motor abilities in every human being. The measurement of the centre of pressure (COP) location and displacement is the most common technique of postural stability assessment. OBJECTIVE: The aim of this study was to assess differences in postural stability depending on sex of 5-year-old children with different body heights. METHODS: A study included 435 healthy children (200 girls and 235 boys) born in 2010 whose parents gave a written consent to their participation in the project. Postural stability was assessed with the use of the dynamographic platform (Zebris FDM 1.8). The assessment of postural stability was based on COP shift parameters (sway path length of COP and average velocity of COP) and COP surface area parameters (area of the ellipse, length of ellipse in the anterior-posterior direction and length of the ellipse in the medial-lateral direction). Body height was measured with Holtein anthropometer and the obtained values were compared with percentile ranks determined by the WHO. RESULTS: The analysis of the parameters describing postural stability in the examined children revealed dimorphism. For the COP shift parameters and COP surface area parameters, the level of statistical significance was recorded for girls and boys. Girls achieved lower results of these parameters than boys regardless of their body height. In the groups of normal- and tall-statured children, differences between the genders were statistically significant. CONCLUSIONS: The present study characterised sex differences in postural stability of 5-year-old children. Sex-related differences were found during a natural stance for all COP parameters. Girls maintained a two-legged standing position with lower sway velocity and a smaller range of sway than their male counterparts. Normal- and tall-statured girls demonstrated better postural stability significantly more often than boys.

Static balance after surgical decompression of lumbar spinal canal stenosis.

BACKGROUND AND OBJECTIVES: Spinal canal stenosis is the most common reason for spinal surgeries in patients over 65 years of age. The aim of the study was to assess static balance in patients prior to and after surgical decompression of lumbar spinal canal stenosis. MATERIAL AND METHODS: The study population consisted of 30 patients suffering from spinal canal stenosis. Their static balance was measured, i.e. quantitative analysis of balance reaction parameters in quiet standing was performed. RESULTS: The analysis of the collected data did not reveal any statistically significant differences between parameters measured prior to and after the surgery (for p< 0.05). A tendency for a decrease of measured parameters was observed. The regularity of changes was determined; in addition, for this analysis, the Spearman's rank correlation coefficient was used. CONCLUSIONS: The analysis of the collected data did not reveal any statistically significant improvement of balance reactions after spinal canal stenosis surgery. In spite of pain reduction, there was no improvement in balance reactions, as behavioural patterns for balance reactions had been fossilised before surgery.

A comparative analysis of static balance between patients with lumbar spinal canal stenosis and asymptomatic participants.

OBJECTIVE: The aim of this study was to assess static balance in patients with lumbar spinal canal stenosis who qualified for surgical decompression of associated neural structures and compare them with asymptomatic participants. METHODS: This case-controlled study evaluated a sample of 50 patients with spinal canal stenosis (stenosis group) and 48 participants with no history of clinical symptoms of back pain. Static balance was assessed by conducting quantitative analysis of balance reaction parameters in quiet standing with the eyes closed. RESULTS: Higher values were observed in total length of center of pressure (COP) path, length of COP path in the anterior-posterior plane, mean amplitude of COP projection in the anterior-posterior plane, maximal amplitude between the 2 most distant points in the anterior-posterior plane, mean COP velocity, and sway area marked by the moving COP in the stenosis group compared with the asymptomatic group. CONCLUSIONS: This study showed statistically significant differences in static balance parameters between patients with spinal canal stenosis compared with the asymptomatic group.

Characteristics of selected parameters of body posture in patients with hip osteoarthritis.

BACKGROUND: Osteoarthritis is the most common disorder of the musculoskeletal system. A unilateral change in the hip joint changes the position of the pelvis and spine, and therefore the patient's body posture. Due to the uneven loading of the lower limbs asymmetry occurs in the trunk. Detailed dependencies of that have not been thorougly described in the available literature. The aim of the study was to characterize the posture parameters in patients with unilateral osteoarthritis of the hip. MATERIAL AND METHODS: The study population consisted of 40 patients with unilateral hip osteoarthritis. There were 21 women and 19 men in the group, aged 41-80 years. The mean patient age was 65.39+/-8.69, the mean body mass was 82.98 ± 11.79 kg, the mean body height was 167.64 ± 8.59, and the mean Body Mass Index (BMI) was 29.6 ± 4.36. RESULTS: Statistically significant differences were found on a number of parameters: lumbar inclination, thoraco-lumbar inclination and torso inclination were lower in patients with hip arthrosis, comparing to control group. Angle of thoracic kyphosis, depth of thoracic kyphosis, angle of lumbar lordosis, depth of lumbar lordosis were smaller in patients with hip arthrosis. Pelvic asymmetry in coronal plane was bigger in patients with hip arthrosis. CONCLUSION: Body posture in patients with unilateral osteoarthritis characterizes a decrease of lumbar lordosis and thoracic kyphosis while the whole body tilt forward. The asymmetry of the pelvis and trunk settings should be taken be taken into account during physical therapy of patients with coxarthrosis also during the post-operative postural re-education process.