Can bone mineral density affect intra-operative blood loss of mini-invasive posterior lumbar interbody fusion?

Objective:Many factors affect intraoperative blood loss(BL)in mini-invasive posterior lumbar interbody fusion(PLIF)procedures,but only few has examined.Specifically,the impact of bone mineral density(BMD)levels on intraoperative BL.This study aims to examine the correlation between these two factors.Methods:Retrospective review of 120 patients with low back disorders who were scheduled to undergo mini-invasive PLIF from October 2018 to October 2019 was performed.Patients were divided into two groups based on BMD of the lumbar spine:normal group and abnormal group(osteoporosis and osteopenia).Comparison of age,gender,BMD,BL,BMI,prothrombin time,activated partial thromboplastin time,haemoglobin concentration,intraoperative mean arterial pressure,platelet count,and operative time(OT)between the two groups,and correlation analysis of BMD and BL were conducted.Results:The mean BL of patients in the abnormal group was remarkably higher than that in the normal group:357.22±152.55 ml and 259.37±125.90 ml respectively(p<0.001).The partial correlation coefficient between BL and BMD was0.45(p<0.001).The results of univariate regression analysis demonstrated that only BMD,gender,and OT were related to BL(BMD,r=0.427,p<0.001;gender,r=0.211,p=0.024;OT,r=0.318,p=0.001).While multivariate linear regression analysis demonstrated that patients with lower BMD and longer OT had a higher amount of intraoperative BL(p<0.001).Conclusions:BMD is an important factor influencing intraoperative BL in mini-invasive PLIF.It should be assessed routinely as a part of the preoperative examination to improve preoperative assessment and ensure patient safety.

Relationship of serum GDF11 levels with bone mineral density and bone turnover markers in postmenopausal Chinese women

Growth differentiation factor 11 （GDF11） is an important circulating factor that regulates aging. However, the role of GDF11 in bone metabolism remains unclear. The present study was undertaken to investigate the relationship between serum GDF11 level, bone mass, and bone turnover markers in postmenopausal Chinese women. Serum GDF11 level, bone turnover biochemical markers, and bone mineral density （BMD） were determined in 169 postmenopausal Chinese women （47-78 years old）. GDF11 serum levels increased with aging. There were negative correlations between GDF11 and BMD at the various skeletal sites. After adjusting for age and body mass index （BMI）, the correlations remained statistically significant. In the multiple linear stepwise regression analysis, age or years since menopause, BMI, GDF11, and estradiol were independent predictors of BMD. A significant negative correlation between GDF11 and bone alkaline phosphatase （BAP） was identified and remained significant after adjusting for age and BMI. No significant correlation was noted between cross-linked N-telopeptides of type I collagen （NTX） and GDF11. In conclusion, GDF11 is an independent negative predictor of BMD and correlates with a biomarker of bone formation, BAP, in postmenopausal Chinese women. GDF11 potentially exerts a negative effect on bone mass by regulating bone formation.

Study on Bone Mineral Density and its Influencing Factors among 1214 Older Adults in Xuhui District,Shanghai

Objective To understand the status of the forearm bone mineral density （BMD） in older adults, and to identify the potentialfactors influencing BMD. Methods A total of 1 214 older adults were examined, in Tianlin, Fenglin and Xietu sub-districts, of Xuhui district, Shanghai. BMD was tested at the left forearm, including distal radius and ulna 1/3 total, distal radius where the distance of radius and ulna is 8 mm, ultra-distal radius, by single energy X-ray densitometer. Results The BMD at all of the four sites decreased with the age increased. The average BMD was higher in male than in female for the same age and measured site. Distal radius 1/3 total had the highest BMD among the four sites. The incidence of low BMD and osteoporosis in distal forearm 1/3 radius total ascended with the age increased. Multiplied logistic regression showed that males had a lower risk to be low BMD （OR=0. 19） compared with female. Compared with the group aged from 50 to 54, the odds ratio in the group aged from 55 to 59, 60 to 64, and 65 to 70 were respectively 3.17, 5.13, 15.03. Compared with those whose monthly salary was less than 1 000, the odds ratio was O. 70 in those whose salary was more than 1 000. Conclusion The incidence of low BMD was high in older adults, and it is related with sex, age, monthly salary.

Skeletal events of Anastrozole versus Tamoxifen on bone mineral density and bone biomarker osteocalcin in postmenopausal women with early breast cancer

Objective： Postmenopausal women with breast cancer are at increased risk of bone loss because of age related estrogen deficiency face which accelerated with the use of aromatase inhibitors （AIs）. We aimed to study the effect on bone mineral density （BMD） and bone formation biomarker osteocalcin level in postmenopausal breast cancer patients, for the first three years of adjuvant hormonal treatment of both groups Tamoxifen versus Anastrozol. Methods： One-hundered postmenopausal breast cancers were prospectively randomized to receive either Tamoxifen 20 rag/day （n = 50） or Anastrozole 10 mg （n = 50）. Both BMD and osteocalcin were assessed initially before treatment and then at regular intervals for both groups. Results： Use of Tamoxifen was associated with significant annual decrease in osteocalcin （P = 0.001）, whereas Anastrozole group had gradual increase of the annual levels （P 〈 0.01）. BMD decreased significantly in Anastrozole versus Tamoxifen groups （2.6% vs. 0.4%, P 〈 0.001）. Osteoporosis T 〈 -2.5 was reported significantly higher in Anastrozole group （P 〈 0.01）. Women with initial osteopenia in Anastrozole group showed significant decrease in BMD （P 〈 0.05）. The addition of bisphosphonate for patients with early osteoporosis markedly improved both osteocalcin level and BMD. Conclusion： Tamoxifen preserves BMD in postmenopausal breast cancer patients, whereas Anastrozole accelerates age associated fall in BMD especially in the first year of therapy, moreover, the addition of bisphosphonate can help to decrease the skeletal related events associated with treatment to ensure better quality of life with treatment.

The changes of preoperative bone mineral density of patients with nonfunctional pituitary adenoma

Objective To evaluate the bone mineral density (BMD) alteration of patients with nonfunctional pituitary adenoma in Chinese mainland and further to investigate the relevant factors of BMD changes. Methods 31 patients with nonfunctional adenoma and 255 healthy controls were enrolled in this study between December 2007 and May 2008.

中老年男性骨质疏松(OP)危险分层与定量超声骨密度(QUS-BMD)及双能X线骨密度(DXA-BMD)的相关性

目的分析亚洲人骨质疏松(osteporsis,OP)自我筛查工具(osteoporosis self-assessment tool for Asian,OSTA)指数与骨密度(bone mineral density,BMD)的相关性,并探讨跟骨定量超声(quantitative ultrasound,QUS)测定BMD对中老年男性OP的诊断价值。方法对893例45岁以上男性研究对象行QUS-BMD检查,记录跟骨QUS-BMD及QUS-T值,测量身高、体重,计算OSTA指数,其中255例研究对象同时行双能X线(dual-energy Xray absorptionmetry,DXA)BMD测定,按OSTA分层标准将受试者分为OP高、中、低风险组。比较各组间跟骨QUS-BMD、QUS-T以及各部位DXA-BMD的差异,分析OSTA指数与髋部、腰椎DXA-BMD的相关性。根据WHO的OP诊断金标准(骨质疏松:T值≤-2.5,骨量减少:-2.5<T值<-1,骨量正常:T值≥-1)将受试者分为OP组、骨量减少组和骨量正常组,评价跟骨QUS-T值对OP的诊断价值。结果 DXA-BMD测定者中,OP者71例(27.8%),骨量减少者143例(56.1%),骨量正常者41例(16.1%)。OSTA分层高、中、低不同OP风险组中,股骨颈、全髋和全腰椎BMD逐渐升高,高危组明显低于中危组和低危组(P<0.05),而中、低危组间的差异无统计学意义(P>0.05)。OP风险高、中、低危3组中OP患病例数分别为37例(48.7%)、17例(17.5%)和17例(20.7%),高危组中OP患病例数显著高于中、低危组(P<0.05)。Spearman相关分析示OSTA指数与股骨颈、全髋及全腰椎BMD呈显著正相关(P<0.05),相应的相关系数分别为0.448、0.439和0.141。跟骨QUS-BMD和QUS-T值在不同OP风险组间的差异无统计学意义(P>0.05)。跟骨QUS-T值诊断OP的曲线下面积为0.753,最佳截断值为-1.3,相应的灵敏度和特异度分别为77.5%和61.4%。结论随着OSTA指数升高,OP风险降低,股骨颈、全髋及全腰椎的BMD升高,OSTA指数与各部位DXA-BMD成线性正相关。OSTA指数和跟骨QUST值对诊断中老年男性OP症筛查具有一定的价值。

DEXA测量松质骨BMD与其生物力学相关性

目的研究人股骨头主要承重区骨密度(Bone Mineral Density,BMD)与骨生物力学相关性;探讨双能X线骨密度仪(Dual Energy X-Ray Absorptiometry,DEXA)对股骨颈骨折治疗的临床参考价值。方法收集2002年11月至2004年12月收治的股骨颈骨折患者行假体置换术取下的股骨头共42例。采用双能X线骨密度仪(Dual Energy X-Ray Absorptiometry,DEXA)测量离体股骨头主要承重区BMD值;在股骨头主要承重区取柱状试件,行纵向压缩力学试验,记录极限应力、极限能量和弹性模量。利用SPSS12.0软件对数据进行正态分布检验后,采用双变量相关性分析法(Pearson相关分析法或Spearman相关分析法)判定BMD与极限应力、极限能量和弹性模量的相关性。结果(1)BMD测量值在0.39～1.05g/cm2之间,呈正态分布,为0.71±0.17g/cm2;(2)极限应力在2.09～23.49MPa范围之间,呈非正态分布,为9.69±6.36MPa;(3)极限能量在2.04～11.76J范围之间,呈非正态分布,为5.45±2.80J;(4)弹性模量在16.59～218.58MPa之间,呈非正态分布,为88.89±48.45MPa;(5)人股骨头主要承重区BMD与极限应力具有线性正相关性,rs=0.765,P<0.001;(6)人股骨头主要承重区BMD与极限能量具有线性正相关性,rs=0.717,P<0.001;(7)人股骨头主要承重区BMD与弹性模量具有线性正相关性,rs=0.669,P<0.001;结论BMD与极限应力、极限能量和弹性模量具有线性正相关性,通过测量股骨头的BMD可以初步预测骨的抗压强度和硬度。

骨质疏松症患者腰椎平均BMD与腰椎椎体骨折相关性研究

目的探讨骨质疏松症患者腰椎平均骨密度(BMD)与腰椎椎体骨折的关系。方法选择2010年1月～2011年1月来我院治疗骨质疏松性椎体骨折96例患者为骨折组,42例无腰椎椎体骨折者作为对照组。采用双能X线骨密度仪对两组患者腰椎正位(L2-4)BMD进行测定。结果骨质疏松患者腰椎椎体骨折组患者BMD相对对照组较低,差异具有统计学意义(P<0.05)。结论腰椎BMD降低与绝经后妇女的骨质疏松性椎体骨折相关。

健康人群腰椎aBMD和vBMD检测及临床应用

目的观察成都地区健康人群腰椎面积骨密度（aBMD）、体积骨密度（vBMD）的变化规律;探讨体重指数（BMI）、体表面积（BS）与腰椎aBMD、vBMD的关系。方法①用LUNAR公司生产的EXPERT-XL双能X线骨密度仪,按常规的骨密度检测方法,测定成都地区健康体检者636例（男性247例,女性389例）,年龄20～90岁,测定部位包括腰椎正位、侧位L2-4。计算出体积骨密度。②统计学处理：用SPSS 13.0统计软件,按年龄、性别分别输入数据,以10岁为一年龄组,分别计算各组骨密度值,结果以-x±s表示。BMI、BS与aBMD、vBMD相关性用pearson相关分析。结果①男性腰椎aBMD、vBMD峰值骨密度出现在30～39岁;女性腰椎aBMD、vBMD峰值骨密度出现在20～29岁;随着年龄增加,骨密度逐渐降低。②男女腰椎aBMD累积最高丢失率分别为11.2%、30.1%,女性累积丢失率明显高于男性。男女腰椎vBMD累积最高丢失率分别为14.2%、30.4%,女性累积丢失率明显高于男性。③男性BMI、BS与aBMD骨密度呈正相关,r=0.241～0.371（P〈0.01）;与vBMD L2-4无明显相关性（P〉0.05）。女性BMI、BS与aBMD呈正相关,r=0.143～0.425（P〈0.01）;与vBMD L2-4无明显相关性（P〉0.05）。结论①男、女腰椎aBMD、vBMD分别在30～39岁,20～29岁达峰值;女性更应注意预防骨质疏松。②健康人群BMI、BS与腰椎aBMD呈正相关,与vBMD无明显相关性。

绝经前期妇女血清PINP、ICTP和25-OH-VitD_3水平的变化及其与BMD的相关性分析

目的:观察绝经前期妇女血清PINP、ICTP和25-OH-VitD3水平的变化,分析其与骨密度(BMD)的相关性。方法:采用双能X线吸收法(DEXA)对67例绝经前期健康女性进行第(1～4)腰椎(L1-4)、左、右髋部(股骨近段+股骨颈)的BMD测定,并根据BMD测定结果分为BMD正常组和BMD降低组。用放射免疫分析(RIA)测定血清Ⅰ型前胶原氨基端前肽(PINP)、Ⅰ型胶原交联羧基末端肽(ICTP)和25-羟维生素D3(25-OH-VitD3),分析与各部位BMD的相关性。结果:①19例出现BMD降低(28.4%),两组间腰椎及左、右髋部BMD差异显著(P<0.01);②BMD减低组的PINP和ICTP[分别为(56.9±18.2)μg/L和(3.78±0.83)μg/L]高于BMD正常组[分别为(43.8±15.1)μg/L和(3.45±0.98)μg/L],其中PINP差异显著(P<0.05),25-OH-VitD3水平两组间无显著性差异[分别为(25.6±7.8)ng/ml和(27.4±9.2)ng/ml,P>0.05];③PINP与L1-4、左股骨近段、左股骨颈的BMD呈正相关(r=0.274～0.402,P<0.05),ICTP及25-OH-VitD3与BMD无明显相关性(r=-0.226～0.083,P>0.05),PINP与25-OH-VitD3呈一定程度的正相关(r=0.395,P<0.05)。结论:绝经前期妇女有骨转换增高趋势,BMD检查联合骨转换标志物测定有利于识别绝经前期高风险发生骨质疏松的妇女,以指导OP预防性治疗。

青少年强直性脊柱炎早期年龄、身高、体重与L_(1-4)BMC、L_(1-4)BMD相关性初步分析

目的 研究青少年强直性脊柱炎 (Ankylosingspondylitis,AS)早期年龄、身高、体重与腰椎L1 -4骨矿含量 (L1 -4BMC)、腰椎L1 -4骨密度 (L1 -4BMD)的相关性。方法 选择男性青少年AS早期病例 31例。应用DPX -IQ双能X线骨密度仪 (DEXA)检测L1 -4BMC和L1 -4BMD ,分析年龄、身高、体重与L1 -4BMC、L1 -4BMD的关系。结果年龄、身高、体重、L1 -4BMC、L1 -4BMD的测定值分别为 (1 7 5 6± 2 0 1 )岁、 (1 6 8 5 2± 8 5 9)cm、 (5 6 1 3±1 2 72 )kg、 (5 2 1 6± 1 2 1 7)g、 (0 971 1± 0 1 392 ) g/cm2 。L1 -4BMC与身高、体重和年龄呈正相关 (R =0 786 ,Radj2 =0 5 75 ,P <0 0 0 0 1 ) ,其中身高和体重是主要相关因素 (R =0 74 7,Radj2 =0 5 2 6 ,P <0 0 0 0 1 )。年龄、身高和体重因素中仅体重因素进入L1 -4BMD回归方程 (R =0 6 5 7,Radj2 =0 4 1 2 ,P <0 0 0 0 1 )。结论 身高和体重与L1 -4BMC相关 ,体重与L1 -4BMD相关。

Methods of predicting vertebral body fractures of the lumbar spine

Lumbar vertebral body(VB) fractures are increasingly common in an ageing population that is at greater risk of osteoporosis and metastasis. This review aims to identify different models, as alternatives to bone mineral density(BMD), which may be applied in order to predict VB failure load and fracture risk. The most representative models are those that take account of normal spinal kinetics and assess the contribution of the cortical shell to vertebral strength. Overall, predictive models for VB fracture risk should encompass a range of important parameters including BMD, geometric measures and patient-specific factors. As interventions like vertebroplasty increase in popularity for VB fracture treatment and prevention, such models are likely to play a significant role in the clinical decision-making process. More biomechanical research is required, however, to reduce the risks of post-operative adjacent VB fractures.

胸腰椎骨质疏松性骨折治疗后BMD、BGP变化的Meta分析

目的系统评价胸腰椎骨质疏松性骨折在接受复方骨肽注射液治疗后骨密度(bone mineral density,BMD)、骨钙素(bone gla protein,BGP)的变化。方法制定检索策略并检索目前国内外公开发表的中、英文数据库,应用Review Manager 5.3对纳入文献中所提取的数据资料进行分析。结果复方骨肽组与对照组相比,其治疗胸腰椎骨质疏松性骨折的总有效率显著高于后者(OR:7.51;95%CI:4.40~12.83;P<0.00001);其骨痛强度评分更低(WMD:-1.62;95%CI:-1.94~-1.29;P<0.00001)、骨密度值更高(WMD:0.04;95%CI:0.01~0.07;P<0.05)、血清骨钙素更高(WMD:2.01;95%CI:1.44~2.58;P<0.00001)、中度骨痛病例数更少(OR:0.32;95%CI:0.17~0.58;P<0.05)、重度骨痛病例数更少(OR:0.14;95%CI:0.06~0.32;P<0.00001),轻度骨痛病例数相对更多(OR:1.63;95%CI:0.38~6.98;P>0.05),但差异并无统计学意义。结论胸腰椎骨质疏松性骨折患者在接受复方骨肽治疗后,其骨密度、血清骨钙素等指标优于对照组,可缓解骨痛症状,具有积极的临床意义。

同一个体腰椎和髋部各部位BMD值及部分部位T值的差异性分析

目的:分析同一个体腰椎和髋部各部位骨密度(bone mineral density,BMD)值及部分部位T值的差异性。方法:选择自然绝经2年以上的女性167名,均行双能量X线吸收测量法(dualenergy X-ray absorptiometry,DXA)扫描,同时对腰椎和髋部进行BMD测定,得出各部位BMD值及部分部位T值。结果:L3、L4 BMD值明显高于L1、L2(P<0.01);L1 T值明显高于L2、L3(P<0.01);股骨干BMD值明显高于股骨颈,股骨颈BMD值明显高于Wards三角大粗隆与大粗隆(P<0.01);股骨颈下半部BMD值明显高于股骨颈上部(P<0.01);Wards三角大粗隆T值明显低于股骨颈、大粗隆(P<0.01);L1~L4 BMD值高于全髋(P<0.05),L1~L4 T值明显低于全髋(P<0.01)。结论:同一个体不同部位BMD值、T值存在显著差异,对于BMD值相对较低的自然绝经后女性,应加强对骨质疏松症的预防工作。

Effect of depot medroxyprogesterone acetate(DMPA) on bone mineral density(BMD) and evaluating changes in BMD after discontinuation of DMPA in adolescent women

Objective To compare bone mineral density （BMD） between users of intramuscular depot medroxyprogesterone acetate （DMPA） and nonhormonal subjects and evaluated the changes in BMD after discontinuation of DMPA.Methods The study included 102 women aged 16-18 years using DMPA for 24 months and 97 same-age nonusers. BMD of the lumbar spine and femoral neck were measured using dual-energy X-ray absorptiometry. The mean BMD values were compared between DMPA users （DMPA group） and nonusers （control group） and the changes of BMD during 36 months after discontinuation of DMPA were observed.Results Mean BMD at the spine and femoral neck did not differ significantly between DMPA group and control group over 12 months, but the BMD values at both anatomical sites were significantly lower in DMPA group than in control group after 24 months treatment. After DMPA discontinuation, the mean BMD values in DMPA users increased substantially. At 24 months after DMPA discontinuation, there were no significant differences between DMPA group and control group. But the values of the lumbar spine and femoral neck BMD in DMPA group were still 1.70% and 1.87%, respectively, below nonusers at 36 months after DMPA discontinuation.Conclusion The use of DMPA for short-term （ ≤12 months） had no significant effects on BMD at spine and femoral neck, but long-term exposure to DMPA had significant loss in BMD in adolescents. Bone loss occurring with DMPA use is reversible after DMPA discontinuation.

Optimization of Physical Activity as a Countermeasure of Bone Loss: A 5-Year Study of Bikram Yoga Practice in Females

Over the last decade, the number of people diagnosed with osteoporosis has increased dramatically due to many factors. While it has been asserted that one variable associated with preserving bone health is participation in high-impact exercises, those same exercises are also well documented to damage the hip and knee joints. Therefore, the goal of the present study was to evaluate the potential benefits of a highly regimented, low impact weight-bearing exercise, Bikram Yoga. Specifically, the bone mineral content was measured using DEXA analysis of the proximal femur and lumbar spine of nine female Bikram Yoga instructors between the ages of 30 and 59, who not only participated in a minimum of 3 classes (4.5 hours) a week, but also actively taught Bikram Yoga classes. These same participants, who remained active as instructors and practitioners, were rescanned five years later. The results of the study, which focused on the percent change in individual bone mineral density over the five-year period were as follows: the premenopausal subjects showed a mean increase in BMD of 6.6% at the femoral neck, 2.0% for the total hip, and 1.0% for the total lumbar spine. In contrast, post-menopausal subjects revealed a mean decrease in bone mineral density (BMD) of ﹣6.0%, ﹣8.1%, and ﹣5.6% in the femoral neck, total hip, and total lumbar spine, respectively. Consequently, the results of this study suggest that performing Bikram Yoga may preserve, or even perhaps, increase bone mineral density in pre-menopausal women and hence, may be an effective countermeasure for preventing osteoporosis.

Bikram Yoga as a Countermeasure of Bone Loss in Women

The purpose of this pilot study was to observe whether Bikram Yoga training helps bone growth or arrest bone loss in women. In this study, the bone mineral density (BMD) was measured at the hip, spine and whole body for a group of 14 pre-menopausal women (11 Caucasians, 2 Asians and 1 African Ameri-can). These 14 women had participated in Bikram Yoga classes (26 yoga postures) at least 3 times a week for 3 or more years. DEXA scans were used to measure BMD at the lumbar spine, hip and the whole body. In addition, the Z-scores were calculated for each subject at these three locations. The study results indicate that the BMD at these body areas of this group of women is generally above the mean BMD expected for normal, healthy, women of comparable age and ethnicity. Overall, the study findings suggest that the intervention of Bikram Yoga training may be beneficial for skeletal health and could prevent bone loss.

Females Had a Worse T-Score at Lumbar Region and Males Had a Worse T-Score at Femoral Region among Chronic Kidney Disease

Background: To evaluate bone-mineral-density-BMD determined by dual-energy X-ray absorptiometry-DEXA and bone turnover markers in chronic-kidney-disease-CKD patients. Method: An observational-clinical study of all patients who were scanned by DEXA-scan in 2018. All patients with low-bone-density or osteoporosis-based on World-Health-Organization-WHO definition were included. Results: 505 patients with abnormal-BMD, 87.3% were in early-stage CKD-stage I - II, 8.5% were in CKD-stage III - V and 4.2% did not have renal tests. 95 (18.8%) were male with a mean age of 57.0 years and 410 (81.2%) were females with a mean age of 55.8 years. Patients of ≥65 years had lower T-score than those who were younger than 65 years-old. Among CKD patients, those with late-CKD (stage III - V) had less BMD-measurements and lower T-score than those with early-CKD (stage I - II). A significant positive correlation exists between parathyroid hormone-PTH-level and the lower T-score. Female had a worse T-score at the lumbar-region whereas male had a worse T-score at the femoral-region. There was no significant difference between males and females for the T-score at hip-region. Conclusion: We observed a distribution of abnormal BMD among different age, sex and CKD groups. Measurements of BMD by DEXA might be a useful test to diagnose osteoporosis in CKD patients. Femoral and total hip areas were more affected, however DEXA might not be able to detect osteoporosis in the lumbar area of CKD patients. T-scores are lower in patients with more severe CKD and lower in elderly patients. PTH level is associated proportionally to the degree of bone loss. Early intervention and proper management must be implemented early among CKD patients with multidisciplinary team approach strategy. More studies are needed to determine if DEXA techniques are enough to distinguish the quantity of bone loss between different stages of CKD.

腰椎骨密度与大型肩袖撕裂的相关性分析

目的探讨腰椎骨密度与大型肩袖撕裂发生的相关性。方法选取2018年1月—2023年10月在昆山市中医医院关节外科住院行肩关节镜手术治疗的患者109例,并按照肩袖撕裂的程度分为大型肩袖撕裂组(n=27)和小型肩袖撕裂组(n=82)。收集患者基本信息,采用多因素Logistics回归分析探讨腰椎骨密度与大型肩袖撕裂发生的相关性。结果大型肩袖撕裂组年龄、外伤史比率高于小型肩袖撕裂组,总胆固醇、白蛋白、血镁、全髋关节骨密度及腰椎骨密度低于小型肩袖撕裂组,差异均有统计学意义(P<0.05)。多因素Logistic回归分析结果表明,腰椎骨密度与大型肩袖撕裂发生有关。大型肩袖撕裂患病率在腰椎骨密度Q1(<0.870 g/cm^(2))、Q2(0.870~<0.991 g/cm^(2))、Q3(0.991~1.137 g/cm^(2))、Q4(>1.137 g/cm^(2))这4个四分位数区间依次为48.15%、29.63%、18.52%、3.70%,呈逐渐下降趋势,差异有统计学意义(P<0.05)。结论腰椎骨密度与大型肩袖撕裂具有相关性,腰椎骨密度越低,大型肩袖撕裂发生的风险越高。

佛山市成年居民骨密度CT定量研究

目的:研究佛山地区成年人椎体骨密度(BMD)与性别、年龄的关系,探讨本地区不同年龄段BMD均值及各年龄段骨质疏松症(OP)的发病率。方法:对佛山市中医院2021年10月至2023年3月的1 065例(男性648例,女性417例)健康成年人体检者使用定量CT(QCT)行椎体BMD检测,按年龄段进行分组;采用t检验和方差分析对不同性别、不同年龄段BMD值进行检验,采用χ2检验和相关分析对不同性别、不同年龄段的OP发病率进行分析。结果:20~29岁、30~39岁、40~49岁及60~69岁、70~79岁不同性别间的BMD差异均有统计学意义,女性BMD在青中年时期高于男性。在40~49岁、50~59岁、60~69岁、70~79岁男性组及30~39、40~49岁、50~59岁、60~69岁女性组中,同性别不同年龄段间的BMD值差异有统计学意义,且随年龄的增长呈下降趋势;同性别不同年龄段的OP发病率差异均有统计学意义,年龄与OP发病率呈正相关关系(r男=0.517,r女=0.636)。结论:佛山市健康成年人QCT测量的椎体BMD与性别、年龄相关,在20~29岁达到峰值,随年龄的增长而下降;从40~49岁开始,OP发病率在男性和女性中随着年龄的增长而增加。