[Indices of mechanical strength of the distal radius in healthy women and women with Colles fracture]. / Wskazniki wytrzymalosci mechanicznej dystalnego odcinka kosci promieniowej u kobiet zdrowych i ze zlamaniem typu Collesa.

Wrist fractures (Colles) are one of the most frequently observed osteoporotic fractures in postmenopausal women. The aim of our study was the comparison of mechanical properties of distal radius of women with Colles fracture using a Stratec XCT 960 peripheral quantitative computed tomography (pQCT) in relation to age-pair controls without a wrist fracture. Using the pQCT method for estimation of SSI (Strength Strain Index), we found significant differences of SSI values in Colles subjects. In clinical practice, pQCT offers new diagnostic tools which cannot be provided by conventional densitometric methods.

[Difficulties in the interpretation of bone densitometric measurements]. / Trudnosci w interpretacji badania densytometrycznego.

In evaluation of the densitometric measurements the most popular presentation of results is a form of t-score or z-score values. T-score is a result of bone mineral density (BMD) in SD below a peak bone mass and z-score is a figure in SD below the values of BMD of healthy individuals of the same age and sex. Osteoporosis is diagnosed if t-score is more than -2.5 ranges from -1.0 to -2.5. Z-score has less value in diagnosis of osteoporosis. The value of different densitometric techniques depends on age of the subject and a past history of fractures. In subjects below 65 yrs the best technique is DEXA (dual energy X ray absorptiometry) and the spine is the site of measurement. In subjects above 65 yrs the best site to measure BMD is the hip. Previous fractures at the site of measurement (vertebral crush fractures), osteoarthritis, kyphosis, could change the values of BMD (overestimate them), and there is a need for a very careful and critical interpretation of BMD results.

[Comparison of bone density in various skeletal parts in women during peri and postmenopause with previous Colles fracture]. / Porównanie gestosci masy kostnej w róznych miejscach szkieletu u kobiet w okresie peri i postmenopauzalnym z przebytym zlamaniem Collesa.

Forearm fracture of Colles type is one of the most frequently observed osteoporotic fractures in women in postmenopausal period. It is proved that the group of women who had Celles fractures (n = 63) has lower bone mineral density in all measured sites except hip comparing to the controls (n = 53). Osteopenia found involves trabecular bone. Women with previous forearm fracture can be treated as the group of increased risk for spine and femoral neck fracture in the future.

[Bone density in axial and peripheral skeleton and mineral density of the entire body as an age dependent factor in a population sample of healthy women]. / Gestosc masy kostnej w szkielecie osiowym i obwodowym oraz gestosc mineralna calego ciala w zaleznosci od wieku w próbce populacyjnej zdrowych kobiet.

Bone mineral density has been measured with dual energy X-ray absorptiometry (DEXA) in both axial and peripheral skeleton of 208 randomly selected healthy women aged between 20 and 80 years. Examined women have been stratified into the age groups of every 10 years. Bone mineral density has been measured in lumbar spine L2-L4 (AP), L2-L3 (Lat.) and proximal femur together with total body mineral density in every examined woman. The obtained results are considered reference values for the Polish population.