Measurement of hone mineral density in the proximal humeral region

VernacularTitle:肱骨近端骨密度的测量及其与年龄和体质量指数的相关性研究
Author: Qianzheng ZHU ; Zhongguo FU ; Dianying ZHANG ; Baoguo JIANG
Publication Type:Journal Article
Keywords: Humerus; Bone mineral density (BMD); Osteoporosis,age-related; Fracture
From: Chinese Journal of Orthopaedic Trauma 2009;11(6):523-526
CountryChina
Language:Chinese
Abstract: Objective To establish a method of measuring bone mineral density (BMD) in the proximal humeral region, and explore the relationship between proximal humeral BMD level and age and body mass index (BMI).Methods A scanning procedure was developed, using a shoulder & forearm position device.Firstly, 30 subjects were examined on the proximal humerus with 2 successive scan sessions to de-termine the short-term precision.Secondly, scanning of the right proximal humerus BMD in 92 healthy women was done.Results Short term precision revealed that RMS SD was 0.011 g/cm2, and RMS CV (coefficient of variation) on BMD measurement was 2.4%.Proximal humeral BMD values decreased with age.No correlation existed between the proximal humeral BMD and BMI.Conclusions The method of measuring BMD over the proximal humeral region is reasonable, and the short term precision of the result is acceptable.Proximal humeral BMD tends to decrease with age.Since the shoulder is subject to the least in-fluence of weight and stress loading, the proximal humeral BMD scan might be an early stage indicator of osteoporosis.