Adhesive fragment reattachment after orthodontic extrusion: a case report

Abstract –  In the treatment of crown fractures, adhesive fragment reattachment provides a good alternative to other restorative techniques, offering several advantages. The present paper reports a case in which the treatment of a cervical crown fracture was accomplished by reattaching the tooth fragment with a flowable resin composite. Orthodontic root extrusion was performed with a modified Hawley appliance prior to fragment reattachment. The clinical and radiographic results after 2.5 years were successful.     

69例骨不连原因分析及手术治疗

本文报道手术治疗骨折不愈69例,根据骨折部位、关节功能、身体状况,采用了8种不同手术方法治疗,术后随访2～8年,治愈率96％。作者对骨折不愈合原因、手术方式的选择和并发症的处理进行讨论,提出了相应的预防措施。     

改良哈氏棒治疗胸腰段脊柱不稳定骨折

本文报告了作者研制的改良哈氏棒治疗胸腰段脊柱不稳定骨折的临床效果。１９９１年１月～１９９４年１０月，治疗２６例，伤椎椎体前缘高度从４１．９１％，恢复至９５．５７％，椎体后缘高度从８１．０３％恢复至１００％，后凸畸形（Ｃｏｂｂ氏法）从２６°恢复至５°，有５例恢复前凸８°～１０°，神经功能恢复１．８级（Ｆｒａｎｋｅｌ分级）。作者认为回复生理前凸的纵轴上纵向撑开力，更有助于胸腰段脊柱骨折的解剖复位。     

中国农村人群骨折基本情况分析

调查了中国≥50岁中老年农村人群20岁以后的骨折发生情况。共计8266人,骨折率为6.42%;其中男性3771人,骨折率为7.48%;女性4495人,骨折率为5.54%。男性显著高于女性(P<0.01)。同时分析了不同部位的骨折发生情况,其中髋部骨折率为0.68%。骨折与跌跤发生因素密切相关,为此本研究还阐述了最近一年中人群跌倒情况,其跌倒率为11.13%。其结果为人群骨折的预防提供了科学依据。     

带旋髂深血管蒂髂骨瓣移植与加压螺钉治疗青壮年股骨颈骨折

本文报告了自１９８５年￣１９９５年间采用带旋髂深血管蒂髂骨瓣移植与加压螺纹钉内固定治疗青壮年囊内型股骨颈骨折２６例。随访时间平均５年５个月。结果，２６例骨折痊愈，骨折愈合率为１００％。骨折愈合时间平均４个月。仅１例骨折愈后后股骨头发生缺血坏死。股骨头缺血坏死率为４％。     

无名异接骨冲剂对骨痂局部骨形态发生蛋白含量的影响

为探讨无名异接骨冲剂加速骨折愈合的作用机理，选用５５只新西兰大白兔，随机选择５只作为正常组；另５０只在无菌条件下造成双桡骨标准骨折模型。将５０只骨折兔随机平均分为实验组和对照组，实验组用无名异接骨冲剂每天４ｇ／ｋｇ溶于２０ｍｌ蒸馏水中分早晚两次灌胃；对照组用２０ｍｌ蒸馏水灌胃。于骨折后第１，２，３，４及５周用断颈法每次每组处死５只兔，取骨痂进行抗骨形态发生蛋白（ＢＭＰ）单克隆抗体免疫组化染色，并用ＣＭＩＡＳ型图像分析仪对ＢＭＰ含量进行定量分析。结果发现：实验组骨折局部ＢＭＰ含量明显高于正常组（Ｐ＜０．０１）；第１，２周实验组明显高于对照组（Ｐ＜０．０１）；实验组ＢＭＰ高峰出现在第２周，而对照组出现在第３周。认为，无名异接骨冲剂能促进成骨细胞合成ＢＭＰ，使ＢＭＰ峰值提前，从而加速骨折愈合。     

Open extremity fracture penetrating the skull

We present a case in which an open fracture of the ulna penetrated the skull and caused a comminuted, depressed skull fracture with a large intraparenchymal hematoma containing bone fragments.     

Importance of Albumin, 25(OH)-Vitamin D and IGFBP-3 as Risk Factors in Elderly Women and Men with Hip Fracture

The relative importance of vitamin D deficiency, secondary hyperparathyroidism, nutritional deficiency and low bone mineral density (BMD) as risk factors for hip fracture is not definitely established. In the framework of a case-control study of risk factors for hip fractured, biochemical markers of bone metabolism and nutrition and femoral BMD data were compared in 136 female and 43 male hip fracture patients, 126 female and 44 male age-matched hospitalized controls, and 47 healthy elderly women (8 men). Patients with hip fracture had lower albumin (−10%9 and 25(OH)-vitamin D (25(OH)D; −19%) compared with hospitalized controls, and lower albumin (−28%) and 25(OH)D levels (−52%) compared with the elderly controls. Serum values of IGFBP-3 were also significantly lower (−33%) in hip fracture patients than in community controls. BMD of femoral neck was lower (p < 0.001) in patients than in hospitalized and community controls. In hip fracture patients, parathyroid hormone (PTH) correlated weakly with BMD (neck: r = −0.19, trochanter: r = −0.17; both p < 0.05). When all women were pooled (n = 233), albumin correlated significantly (age-adjusted) with BMD at all sites (neck: r = 0.27, trochanter: r = 0.25; all p < 0.001). Albumin, but not 25(OH)D, also correlated with skinfold thickness (r = 0.19, p < 0.0025) and with body mass index (BMI) (r = 0.14, p < 0.05). Male patients with hip fracture had lower BMD and albumin (both p < 0.001), 25(OH)D (p = 0.02) and IGFBP-3 levels (p <: 0.005) compared with the controls. When male patients and controls were pooled together, albumin, skinfold thickness and BMI were significantly correlated with each other, but not with BMD. IGFBP-3 was highly correlated with albumin (p < 0.0001), 25(OH)D (p < 0.005) and, less significantly, with PTH (p < 0.05), but not with BMI or skinfold thickness. IGFBP-3 was significantly correlated with BMD at all sites (neck: r = 0.27, p < 0.05); trochanter: r = 0.40, p < 0.0005). In conclusion, low albumin and low BMD were both important risk factors for hip fracture. Low serum albumin was the strongest independent variable correlated with hip fractures. In men, IGFBP-3 was correlated with BMD. The femoral BMD depended only weakly on PTH and 25(OH)D, but was correlated at all sites with albumin, a non-specific parameter of nutrition and general health.     

实验性骨折愈合中骨吸收活动的超微结构观察

将50只家兔造成实验性桡骨骨折,分批取骨痂标本,用光镜和电子显微镜观察表明,在骨折愈合过程中,破骨细胞是骨吸收的主要执行者,巨噬细胞能吞噬死骨,但不能吸收骨质。     

Pilon骨折的治疗

作者自1988年1月至1993年12月收治Pilon骨折31例，根据Riled的分类祛：Ⅰ型5例，Ⅱ型10例，Ⅲ型16例．手术治疗22例，保守治疗9例．随访l－4年，疗效按Bourne的标准评定，Ⅰ型骨折手术或保守治疗优良率100％，Ⅱ、Ⅲ型骨折手术治疗优良率85％，保守治疗优良率33．3％．作者认为Pilon骨折Ⅱ、Ⅲ型应手术治疗．保守治疗仅用于Ⅰ型骨折．手术控AO的四步重建法进行．但严重的粉碎骨折或开放骨折伴软组织缺损，内固定确定难干实施者，则改用踝部超关节外固定支架固定．