Effect of contralateral cane use on hip moment impulse in the frontal plane during the stance phase

BackgroundRecent reports have shown that the daily cumulative moment in the frontal plane (i.e., product of hip moment impulse in the frontal plane during the stance phase and mean steps per day) is a risk factor for hip osteoarthritis. This study aimed to clarify the effect of contralateral cane use on hip moment impulse in the frontal plane of the stance limb.MethodsThis study included 15 healthy subjects who walked under four experimental conditions: (1) without a cane and (2–4) contralateral cane use with 10%, 15%, and 20% body weight support (BWS), respectively. To maintain the same walking speed in all conditions, the cadence was set to 80 steps/min, and the step length was fixed. The hip moment impulses in the frontal plane (i.e., area under the hip ab-adduction moment waveform) and peak hip adduction moments in all conditions were calculated.ResultsContralateral cane use significantly decreased the hip moment impulse in the frontal plane and peak hip adduction moment compared to non-cane use. Moreover, the hip moment impulse in the frontal plane and peak hip adduction moment decreased significantly with increased cane BWS. There were no significant differences in walking speed, cadence, and step length between the four conditions.ConclusionContralateral cane use decreases the hip moment impulse in the frontal plane and peak hip adduction moment in the stance limb. These findings may help clarify how to delay the progression of hip osteoarthritis.     

Bloqueio do plano do eretor da espinha com técnica de múltiplos cateteres para esofagectomia aberta: relato de caso

Background and objective

Erector spinae plane block is a valid technique to provide simultaneously analgesia for combined thoracic and abdominal surgery.

胸廓矢状面倾斜度的测定及其对放疗的意义

目的了解人体前胸矢状面倾斜度的大小及对放疗剂量分布的影响。方法选择126例患者行胸部CT扫描并予正中矢状面重建。分别测定上中下胸廓层面前后体表中线至脊髓距离及各层上下间距,计算出前胸倾斜度。查TMR表得出中平面深度及脊髓深度处上中胸及中下胸层面剂量误差。结果前野各层面至脊髓距离变化较大,后野变化较小。人体前胸倾斜度范围为25~56°。上中胸段组的上下缘剂量误差较大,躯体中平面平均相差8%,脊髓17%。中下胸段组剂量误差较小,躯体中平面4%,脊髓7%。误差随倾斜角度增加而增加。根据倾斜度得出合适的楔形板修正角度大约为10~35°。结论人体前胸矢状面存在自然倾斜度,这种倾斜影响前野剂量分布,应予以个体化修正。建议根据角度的大小选择合适的头足向楔形板优化。     

平面导板在深覆(牙合)矫治中的临床应用研究

目的：探讨平面导板矫治重度深覆[牙合]患者的作用机制及临床作用要点。方法：对18名生长发育期的重度深覆[牙合]患者,用平面导板来打开咬合,并对咬合打开前后的硬软组织变化进行分析。结果：①上下后牙及牙槽高度均增加,下后牙及牙槽高度的增加值大于上后牙及牙槽高度的增加值,而对前牙及牙槽高度的影响无统计学差异;②上下颌骨在水平方向上无改变,但下颌平面角与下面高/全面高治疗后较治疗前增大,后面高/前面高治疗后较治疗前减小;③覆[牙合]减小,Spee氏曲线得到整平;④松弛的下唇肌肉得到紧张,从而改善了侧貌外形。结论：平面导板使覆[牙合]减小主要是后牙及后牙齿槽突高度增加的结果,对生长发育期的低角重度深覆[牙合]患者治疗效果较好。     

冠状CT扫描对颅脑疾患的诊断意义

作者通过对30例颅脑疾患冠状CT扫描资料进行研究,提出在一定情况下,在横断CT扫描的基础上,加用冠状CT扫描或冠矢重建图象,对病变的精确定位、病变的起源和发展方向以及病变与周围结构的关系等很有裨益。     

Neuroblastoma-like epidural localization in non-Hodgkin's lymphoma

Summary We report a case of non-Hodgkin's lymphoma with CNS involvement confined to the epidural space causing cranial suture diastasis. Cerebrospinal fluid and bone marrow were normal. Two cases only of cranial epidural lymphoma have been reported in the literature; in both cases, the leptomeninges were also involved but without suture diastasis.     

Three-dimensional magnetic resonance myocardial motion tracking from a single image plane.

Three-dimensional imaging for the quantification of myocardial motion is a key step in the evaluation of cardiac disease. A tagged magnetic resonance imaging method that automatically tracks myocardial displacement in three dimensions is presented. Unlike other techniques, this method tracks both in-plane and through-plane motion from a single image plane without affecting the duration of image acquisition. A small z-encoding gradient is subsequently added to the refocusing lobe of the slice-selection gradient pulse in a slice following CSPAMM acquisition. An opposite polarity z-encoding gradient is added to the orthogonal tag direction. The additional z-gradients encode the instantaneous through plane position of the slice. The vertical and horizontal tags are used to resolve in-plane motion, while the added z-gradients is used to resolve through-plane motion. Postprocessing automatically decodes the acquired data and tracks the three-dimensional displacement of every material point within the image plane for each cine frame. Experiments include both a phantom and in vivo human validation. These studies demonstrate that the simultaneous extraction of both in-plane and through-plane displacements and pathlines from tagged images is achievable. This capability should open up new avenues for the automatic quantification of cardiac motion and strain for scientific and clinical purposes.     

Safety and efficacy of combined upper blepharoplasties and open Coronal Browlift: A consecutive series of 600 patients

Surgical rejuvenation of the upper face involves the correction of excess and lax forehead, eyelid, and periorbital skin. Improving the appearance by correcting the effects of aging involves a combination of blepharoplasty and open coronal foreheadplasty. Many surgeons and several reports question the safety of both procedures being performed concomitantly. The difficulty arises in precisely balancing the skin excision from the frontal forehead and upper eyelid areas. Over-resection of skin may result in incomplete closure of the eyelid and dry-eye syndrome, while an inadequate resection may produce a poor aesthetic result. There is no large series that documents the safety and effectiveness of these two procedures being performed concomitantly. Furthermore, with the recent and rapid development of complex multiplanar endoscopic facial rejuvenation techniques, the basic open forehead-plasty has become increasingly overlooked as a legitimate, efficacious technique for rejuvenation of the upper face. The technique utilized in this series is presented in detail. The consistently excellent results obtained satisfy the aesthetic goals of patients as well as the goals of surgeons, and suggest a renewed interest in the technique based upon its simplicity and easily reproducible results.     

前锯肌平面阻滞和胸椎旁神经阻滞在胸腔镜手术中的麻醉效果及对疼痛因子的影响

目的 研究前锯肌平面阻滞与胸椎旁神经阻滞对胸腔镜手术患者的麻醉效果及对疼痛因子的影响。方法 选取2020年11月—2021年9月安徽省池州市人民医院60例接受胸腔镜手术治疗的患者作为研究对象,按照随机数字表法分为A组和B组,每组30例。两组患者术中均接受气管插管全身麻醉,麻醉诱导前,A组选择前锯肌平面阻滞,B组选择胸椎旁神经阻滞。比较两组患者的麻醉效果、阻滞操作时间、阻滞起效时间、阻滞持续时间、生命体征、术后镇痛泵按压次数、术后舒芬太尼使用量、疼痛因子、术后疼痛评分及术后不良反应发生率。结果 A组的麻醉优良率为96.67%,B组的麻醉优良率为93.33%,两组比较,差异无统计学意义（P>0.05）。两组患者的麻醉平面、阻滞起效时间比较,差异无统计学意义（P>0.05）;A组较B组阻滞操作时间缩短,阻滞持续时间延长。两组患者切皮前后收缩压、舒张压、心率差值比较,差异无统计学意义（P>0.05）。A组的术后48 h内镇痛泵按压次数、术后舒芬太尼使用量较B组减少（P <0.05）。两组患者手术前后血清PGE2、IL-6差值比较,差异有统计学意义（P <0.05）...