Bone mineral content of mandibles: Normal reference values—Rate of age-related bone loss

1988 ◽  
Vol 43 (4) ◽  
pp. 193-198 ◽  
Author(s):  
Nina von Wowern
Keyword(s):  
Bone Loss ◽  
Bone Mineral Content ◽  
Bone Mineral ◽  
Reference Values ◽  
Mineral Content ◽  
Normal Reference ◽  
Age Related

Physical Exercise as Prophylaxis against Involutional Vertebral Bone Loss: A Controlled Trial

1983 ◽  
Vol 64 (5) ◽  
pp. 541-546 ◽  
Author(s):  
Bjørn Krølner ◽  
Birte Toft ◽  
Stig Pors Nielsen ◽  
Erik Tøndevold
Keyword(s):  
Lumbar Spine ◽  
Bone Loss ◽  
Physical Exercise ◽  
Bone Mineral Content ◽  
Bone Mineral ◽  
Mineral Content ◽  
Controlled Trial ◽  
Exercise Group ◽  
Control Group ◽  
Normal Women

1. The skeletal effects of physical training were studied in a controlled trial involving 31 healthy women (aged 50–73 years) with previous Colles' fracture of the forearm. The bone mineral content of the lumbar spine and both distal forearms was measured by dual-photon (153Gd) absorptiometry. 2. The participants were allocated to either a physical exercise group or a control group. The former group followed a standardized exercise programme, exercising for 1 h twice weekly during 8 months. 3. Twenty-seven women completed the study. Lumbar spine bone mineral content of the exercise group increased by 3.5%, whereas that of the control group decreased by 2.7%. The rate of bone loss in the control group equalled that of age-matched normal women. 4. The changes in forearm bone mineral content appeared to be independent of the exercise. The bone mineral content of the previously fractured forearm remained nearly unchanged. The bone mineral content of the uninjured forearm decreased on average by 3.5%. 5. The data suggest that physical exercise can inhibit or reverse the involutional bone loss from the lumbar vertebrae in normal women. Physical exercise may prevent spinal osteoporosis.

scholarly journals Clinical Evaluation of Age-Related Changes of Bone Mineral Content of Cortical and Trabecular Bones by Dual Energy QCT.

1993 ◽  
Vol 30 (11) ◽  
pp. 958-963
Author(s):  
Munehiko Tanno ◽  
Tetsuya Horiuchi ◽  
Takanori Yokoyama ◽  
Mari Ogihara ◽  
Mutsumi Kawakami ◽  
...  
Keyword(s):  
Bone Mineral Content ◽  
Bone Mineral ◽  
Clinical Evaluation ◽  
Mineral Content ◽  
Dual Energy ◽  
Age Related ◽  
Trabecular Bones ◽  
Age Related Changes

Influence of Body Mass Index on the Age-related Slope of Total and Regional Bone Mineral Content

1997 ◽  
Vol 61 (2) ◽  
pp. 134-138 ◽  
Author(s):  
M. Revilla ◽  
L. F. Villa ◽  
A. Sánchez-Atrio ◽  
E. R. Hernández ◽  
H. Rico
Keyword(s):  
Body Mass Index ◽  
Bone Mineral Content ◽  
Body Mass ◽  
Bone Mineral ◽  
Mineral Content ◽  
Age Related ◽  
Regional Bone Mineral Content

Longitudinal study of bone loss after thyroidectomy and suppressive thyroxine therapy in premenopausal women

1992 ◽  
Vol 126 (3) ◽  
pp. 238-242 ◽  
Author(s):  
Giulio Pioli ◽  
Mario Pedrazzoni ◽  
Ernesto Palummeri ◽  
Mario Sianesi ◽  
Roberto Del Frate ◽  
...  
Keyword(s):  
Bone Loss ◽  
Bone Mineral Content ◽  
Bone Mineral ◽  
Mineral Content ◽  
Premenopausal Women ◽  
Subtotal Thyroidectomy ◽  
Suppressive Therapy ◽  
Control Group ◽  
Thyroxine Therapy ◽  
Rate Of Bone Loss

The effects of suppressive doses of L-thyroxine on the appendicular and axial bone mineral content were followed for 12–36 months after total or subtotal thyroidectomy in 15 premenopausal women. Compared to age-matched controls, these patients had a more marked bone loss of the spinal bone mineral content (2.6±1.9% vs 0.2±1.2% per year). The changes in radial cortical bone density were not significantly different from the control group. We conclude that when a suppressive therapy with L-thyroxine is necessary the rate of bone loss should be monitored at regular intervals.

Vertebral Bone Loss: An Unheeded Side Effect of Therapeutic Bed Rest

1983 ◽  
Vol 64 (5) ◽  
pp. 537-540 ◽  
Author(s):  
Bjørn Krølner ◽  
Birte Toft
Keyword(s):  
Lumbar Spine ◽  
Bone Loss ◽  
Bone Mineral Content ◽  
Bone Mineral ◽  
Mineral Content ◽  
Lumbar Vertebrae ◽  
Bed Rest ◽  
Consecutive Series ◽  
Lumbar Intervertebral Disc ◽  
Vertebral Bone

1. The skeletal effects of simple bed rest and re-ambulation were studied in a consecutive series of 34 patients (aged 18–60 years) hospitalized with low backache due to protrusion of a lumbar intervertebral disc. The bone mineral content of the second, third and fourth lumbar vertebrae was determined by dual-photon (153Gd) absorptiometry immediately after admission to the hospital, at the end of the bed-rest period (mean 27 days, range 11–61 days) and approximately 15 weeks later (range 11–24 weeks). 2. During recumbency a mean decrease in lumbar spine bone mineral content of 0.9% per week was observed. 3. Re-ambulation resulted in bone mineral gain, and restoration of lumbar spine bone mineral content was nearly complete after 4 months. 4. The findings suggest that the simple therapeutic bed-rest regimen leads to excessive vertebral bone loss. Recurrent bed-rest periods may predispose to spinal osteoporosis.

Cortical bone mineral content in primary hyperparathyroidism. Changes after parathyroidectomy

1986 ◽  
Vol 111 (4) ◽  
pp. 494-497 ◽  
Author(s):  
Carlos Mautalen ◽  
Harry Romero Reyes ◽  
Gualterio Ghiringhelli ◽  
Günther Fromm
Keyword(s):  
Bone Loss ◽  
Primary Hyperparathyroidism ◽  
Bone Mass ◽  
Bone Mineral Content ◽  
Cortical Bone ◽  
Bone Mineral ◽  
Mineral Content ◽  
Significant Negative Correlation ◽  
Average Serum ◽  
Severe Degree

Abstract. The bone mineral content (BMC) of 35 patients with primary hyperparathyroidism (PHPT) was measured at the mid radius (95% cortical bone) by photon absorptiometry of a 241Am source. The majority of the patients had an overt disease of moderate to severe degree. Average serum calcium of the group was 12.3 mg/100 ml (range 10.6 to 18.0 mg/100 ml). The percentage of normality of the BMC was (Av ± 1 sd) 75.1 ± 13.0% for the whole group. The average increment of BMC in 14 patients 9 to 26 months after parathyroidectomy was 9.9%, with a wide dispersion. However a highly significant negative correlation (r: 0.83; P < 0.01) was found between the initial bone mass and the percentage increment per month after surgery. No further gain was observed 2 years after parathyroidectomy except in one patient with an extremely severe bone loss. In spite of the gain obtained after surgery the bone mass remained markedly diminished in most patients showing that the cortical bone loss caused by PHPT is mainly irreversible.

Bone Mineral Content of the Lumbar Spine in Normal and Osteoporotic Women: Cross-Sectional and Longitudinal Studies

1982 ◽  
Vol 62 (3) ◽  
pp. 329-336 ◽  
Author(s):  
B. Krølner ◽  
S. Pors Nielsen
Keyword(s):  
Bone Loss ◽  
Femoral Neck ◽  
Bone Mineral Content ◽  
Bone Mineral ◽  
Mineral Content ◽  
Premenopausal Women ◽  
Femoral Neck Fractures ◽  
Cross Sectional ◽  
Compression Fractures ◽  
Normal Women

1. Bone mineral content of the second, third and fourth lumbar vertebrae was determined in normal women and women with clinical osteoporosis by using dual-photon (153Gd) absorptiometry. 2. A cross-sectional study of 70 normal women (aged 19–88 years) showed a bone loss of 44% from the age of around 34 years throughout life. 3. Longitudinal data from 59 normal women confirmed that the vertebral bone loss started before the menopause. An accelerated bone loss amounting to nearly 6% per year was seen immediately after the menopause. The bone loss of older women was slower. 4. Mean lumbar bone mineral content of 36 women (aged 48–93 years) with recent fractures of their femoral neck after minor trauma equalled that of age-matched normal women. Lumbar bone mineral content of the women with intratrochanteric femoral neck fractures was lower than that of the women with medial femoral neck fractures. 5. Mean lumbar bone mineral content of 72 women (aged 58–89 years) with primary osteoporosis was 41% lower than that of normal premenopausal women and 18% lower than that of age-matched controls. A weak inverse relationship between lumbar bone mineral content and the number of compression fractures was found. A weak inverse relationship between lumbar bone mineral content and the number of compression fractures was found. 6. Women with lumbar bone mineral content values below the 95% confidence limits for normal premenopausal women are at risk of future vertebral compression fractures, the fracture risk being inversely related to lumbar bone mineral content.

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