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- Ejerhed, L., et al.
(författare)
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The effect of anterior cruciate ligament surgery on bone mineral in the calcaneus: a prospective study with a 2-year follow-up evaluation
- 2004
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Ingår i: Arthroscopy. - 1526-3231. ; 20:4, s. 352-9
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Tidskriftsartikel (refereegranskat)abstract
- PURPOSE: The goal of this study was to evaluate the effect of anterior cruciate ligament (ACL) reconstruction on the bone mineral area mass (BMA) in the calcaneus on the injured and noninjured sides. TYPE OF STUDY: A prospective cohort study with sequential assessments of bone mineral in the calcaneus before and after ACL reconstruction. METHODS: Thirty-four consecutive patients with a unilateral ACL rupture underwent arthroscopic reconstruction using patellar tendon autografts. The BMA was assessed bilaterally in the calcaneus using a gamma camera according to the dual-energy photon absorptiometry technique, before surgery and after 6 and 26 months. RESULTS: Thirty-one of 34 patients (20 men and 11 women) underwent all BMA measurements. The median age at index surgery was 27 (16 to 50) years, and the reconstruction was performed 12 (2 to 192) months after the injury. The median preoperative Tegner activity level increased from 3 (2 to 8) to 7 (2 to 9) at 26 months (P <.0001). The BMA in the calcaneus on both the injured and noninjured side decreased by 16% and 17% respectively from the preoperative measurement to the 26-month control (P =.0014; P =.0006). On all occasions, the BMA was lower on the injured side than on the noninjured side (P =.012). CONCLUSIONS: Patients with a unilateral ACL rupture had a lower BMA in the calcaneus on the injured side compared with the noninjured side. Although patients increased activity levels after reconstruction, the BMA in the calcaneus decreased on both the injured and the noninjured side up to 2 years after surgery. LEVEL OF EVIDENCE: Level II-1, prospective cohort study.
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| 4. |
- Söderpalm, Ann-Charlott, 1961, et al.
(författare)
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DXL measurements children 2-10 years.
- 2013
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Ingår i: Bone Abstracts, 6th International Conference on Childrens Bone Health. Rotterdam. - 2052-1219. ; 2:June (P12)
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Konferensbidrag (övrigt vetenskapligt/konstnärligt)
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| 5. |
- Söderpalm, Ann-Charlott, 1961, et al.
(författare)
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Pediatric reference data for bone mineral density in the calcaneus for healthy children 2, 4, and 7 years of age by dual-energy x-ray absorptiometry and laser
- 2005
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Ingår i: J Clin Densitom. - 1094-6950. ; 8:3, s. 305-13
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Tidskriftsartikel (refereegranskat)abstract
- Dual-energy X-ray absorptiometry and laser (DXL) Calscan measures bone mineral density (BMD) in the calcaneus. In the present study, the DXL Calscan device has been modified for use in pediatric practice. It includes a function for measuring calcaneal height, which makes it possible to calculate volumetric bone mineral apparent density (BMAD). The aims of the present study were to evaluate the method when used in children, to create pediatric reference values in healthy Swedish 2-, 4-, and 7-yr-old children for BMD, bone mineral content (BMC), and BMAD, and to study whether these parameters were related to auxological data. The method was well tolerated by all children. Intraindividual coefficients of variation for BMC and BMD decreased with increasing age. The mean BMD was 0.17+/-0.003 g/cm2 in 2-yr-old children, 0.22+/-0.003 g/cm2 in 4-yr-old children, and 0.30+/-0.005 g/cm2 in 7-yr-old children. This study provides normative data as percentile values for BMD, BMC, and BMAD in young children measured with DXL Calscan. BMD was significantly correlated with age (p<0.001), height (p=0.001), weight (p<0.001), and body mass index standard deviation score (p<0.001). Seven-year-old girls showed significantly higher BMD than boys.
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| 6. |
- Söderpalm, Ann-Charlott, 1961, et al.
(författare)
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The Relationship Between Dual Energy X-Ray Absorptiometry (DXA) and DXA With Laser (DXL) Measurements in Children
- 2008
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Ingår i: Journal of Clinical Densitometry. - : Elsevier BV. - 1094-6950. ; 11:4, s. 555-60
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Tidskriftsartikel (refereegranskat)abstract
- The present study was designed to examine the relationship between bone mineral density (BMD) measurements performed using conventional dual energy X-ray absorptiometry (DXA) in total body (TB), spine, and hip and the more recent technique of DXA with laser (DXL) in the calcaneus in a young population and to explore the diagnostic capacity of the heel DXL. One hundred and twelve persons, 2.2-20.6yr of age, were studied using the 2 techniques. Significant correlations were observed between the heel BMD and BMD values in TB (r=0.73, p<0.001), TB(head excluded(HE)) (r=0.83, p<0.001), spine (r=0.72, p<0.001), and hip (r=0.90, p<0.001). The relationships between DXA and DXL measurements with 95% tolerance intervals are presented. Using heel DXL measurements to predict the lowest DXA quartiles at all the other measured sites revealed sensitivity levels of 0.9 (TB, spine, hip) and 1.0 (TB(HE)) and specificity levels of 0.86 (TB), 0.94 (TB(HE)), 0.92 (spine), and 0.95 (hip). We conclude that BMD values obtained with DXA and DXL correlate well and that the DXA and DXL techniques effectively identify the same individuals with low BMD. The DXL, which is portable, easy to use and gives a low radiation dose, can be useful for assessing bone mass in a young population.
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