Effect of leading-edge tubercles on the flow over low-aspect-ratio wings at low Reynolds number

Two-dimensional time-resolved particle image velocimetry(TR-PIV)and stereographic particle image velocimetry(SPIV)techniques were used to investigate the effect of leading-edge tubercles on the flow over low-aspect-ratio wing models.The angle of attack is fixed at 10°,and the Reynolds number based on chord length is 5.8×10^(3).It is shown that the leading-edge tubercles can effectively mitigate flow separation in the model and also reduce the contribution of wake vortex to the fluctuating energy of flow.Counter-rotating vortex pairs(CVPs)initiated from the peak of leading-edge tubercles can promote nearby momentum exchange,enhance mixing of the flow and increase the energy contained in the boundary layer,which results in resisting the larger adverse pressure gradient.Therefore,it is concluded that CVPs play an important role in mitigating the flow separation for wings with leading-edge tubercles.

Tibial tubercle osteotomy in revision total knee arthroplasty: A systematic review

BACKGROUND Tibial tubercle osteotomy(TTO) is a well-established surgical technique to deal with a stiff knee in revision total knee arthroplasty(RTKA). However, several reports have described potential osteotomy-related complications such as nonunion, tibial tubercle migration and fragmentation, and metalware related pain.AIM To evaluate the literature and estimate the efficiency of TTO in RTKA in terms of osteotomy union, knee mobility and complications.METHODS MEDLINE, Scopus, and the Cochrane Central Register of Controlled Trials were investigated for completed studies until February 2020. The principle outcome of the study was the incidence of union of the osteotomy. Secondary outcomes were the knee range of motion as well as the TTO-related and overall procedure complication rate.RESULTS Fifteen clinical studies with a total of 593 TTOs were included. The TTO union rate was 98.1%. Proximal migration and anterior knee pain were the most common TTO-related complications accounting for 6.9% and 6.4% of all cases,respectively. However, only 2.2% of cases suffering from anterior knee pain needed hardware removal. Knee flexion was improved from 82.9° preoperatively to 100.1° postoperatively and total knee range of motion was increased from 73.4° before surgery to 97° after surgery. Stiffness requiring manipulation under anesthesia was recorded in 4.6% of cases. No major complications were reported.CONCLUSION The current systematic review supports the use of TTO in RTKA, as it is associated with high union rate, significant improvement in knee motion and low osteotomy-related complication risk that rarely leads to secondary tibial tubercle procedures.

Separated root tip formation associated with a fractured tubercle of dens evaginatus: A case report

BACKGROUND Several previous studies have reported an unusual root formation in which a fractured apical fragment of an immature root continued to develop independent of the main root after trauma to an immature tooth.To date,there have been only rare reports of the continuing apical formation of the fractured root associated with dens evaginatus(DE).This paper presents a case of a separated root tip formation associated with a fractured tubercle of DE.CASE SUMMARY An 11-year-old boy was referred for gingival sinus on the buccal side of the right mandibular second premolar(tooth#45).Clinically,tooth#45 was free of caries,but there was a sign of a fractured tubercle of DE on the occlusal surface.Radiography showed that the root canal of tooth#45 was widely radiolucent.A separated root apex was found apically under the main root and was nearly completely formed with an apical orifice at the apical tip.Tooth#45 was diagnosed as tubular fracture of DE with chronic apical periodontitis.A revascularization technique was recommended to treat the tooth.At 3-mo and 1-yr follow-up,the patient remained asymptomatic.Periapical radiography revealed that the separated root tip distally drifted with closure of the apex.However,the root length and thickness of the main root did not increased.CONCLUSION Clinicians should be aware that even if tubercle of DE is fractured in an immature tooth,the root tip may be separated from the main root and completely formed.

Genial tubercles: Morphological study of the controversial anatomical landmark using cone beam computed tomography

BACKGROUND Identification of the morphology of the genial tubercles (GTs) is valuable for different dental applications. The morphological pattern of the GTs is still controversial, and therefore, the study of its morphology using cone beam computed tomography (CBCT) plays a valuable role in resolving the controversy. AIM To assess the morphological pattern, dimensions and position of the GTs using CBCT among a selected Saudi population. METHODS CBCT records of 155 Saudi subjects (49 female and 106 male) were used to assess the pattern and size of the GTs and to determine the distance from the apices of the lower central incisors to the superior border of the incisors (I-SGT) and the distance from the inferior border of the GTs to the menton (IGT-M). RESULTS The results of this study showed that the most common morphological pattern was of two superior GTs and a rough impression below them (36.8%), followed by two superior GTs and a median ridge representing fused inferior GTs below them (22.6%) and a single median eminence or projection (20%). The classically described pattern, of two superior and two inferior GTs placed one above the other, was found in only 14.2% of cases, while 6.4% of the studied cases had no GTs. The mean width and height were 6.23 ± 1.93 mm and 6.67 ± 3.04 mm, respectively, while the mean I-SGT and IGT-M measurements were 8.26 ± 2.7 mm and 8.13 ± 3.07 mm, respectively. CONCLUSION The GTs are a controversial anatomical landmark with wide variation in their morphological pattern. The most common pattern among the studied Saudi sample was of two superior GTs and a rough impression below them, and there were no significant differences between males and females.

The Taxonomy and the SEM Observation on Tubercles on Lemma of Yihuang Wild Rice

To distinguish the taxonomy of Yihuang wild rice found in Yihuang County, Jiangxi Province, China in 1999, the botanical characteristics of Yihuang wild rice were retrieved by genus, and species; at the same time, the tubercle characters on lemma in Yihuang wild rice, O. rufipogon, 0. officinalis, 0. meyeriana, and O. granulata, were also observed by scanning electron microscopy. The retrieval result by genus showed that Yihuang wild rice is Leersia Soland. Ex Swartz., not Oryza L., Hygroryza Nees and Chikusichloa Koidz. The retrieval result by species showed that Yihuang wild rice is L. sayanuka Ohwi, not L. hexandra Swartz., L. japonica （Makino） Honda and L. oryzoides （L.） Swartz. The results of the SEM observation on tubercles on lemma showed that the tubercle characters on lemma of Yihuang wild rice belongs to ＂inlaid- silica-peak＂ type, which is different from the three types of wild rice existing in China, O. rufipogon, O. officinalis, O. Meyeriana, and also O. granulata, but is similar to L. tisseranti, thereby gives a proof of the above retrieval results. It could be concluded that Yihuang wild rice does not belong to Oryza L., but to Leersia sayanuka Ohwi of Leersia Soland. Ex Swartz.

Choroidal and ciliary body tubercle: a case report

Dear Editor,I am Bing Li from the Department of Ophthalmology,Peking Union Medical College Hospital in Beijing, China,and I write to present a case report of choroidal and ciliary body tubercles.Ocular tuberculosis (TB) is an extrapulmonary tuberculous condition with variable manifestations[1].

X线片测量肱骨大结节角与肩袖撕裂的相关性研究

目的 探讨X线片测量肱骨大结节角(GTA)与肩袖撕裂的相关性,为肩袖撕裂的预防、早期诊断和治疗提供依据和指导。方法 回顾性分析2020年1月至2023年12月医院收治的138例因肩部疼痛不适行肩部X线检查患者的病历资料。根据临床诊断结果将发生肩袖撕裂的患者纳入试验组(64例),未发生肩袖撕裂的患者纳入对照组(74例)。比较两组GTA的差异;考察GTA预测肩袖撕裂的临界值和预测能力;评价2名放射科医师测量结果的一致性和相关性。结果 试验组GTA大于对照组,差异有统计学意义(P<0.05)。区分试验组与对照组患者的GTA最佳临界值为≥70°,受试者工作特征(ROC)曲线下面积为0.826,灵敏度和特异度分别为0.88和0.81。2名放射科医师测量GTA结果的组内相关系数(ICC)为0.677,Pearson’s相关性系数r=0.547。结论 采用X线片测量GTA对肩袖撕裂具有较好的预测价值和较高的测量一致性,可为肩袖撕裂的预防、早期诊断和治疗提供依据和指导。

缝线桥技术治疗青少年胫骨结节撕脱性骨折

目的 比较缝线桥技术和空心螺钉加压方法治疗青少年胫骨结节撕脱性骨折的疗效。方法 采取回顾性研究,收集了2015年10月至2022年10月枣阳市第一人民医院骨科收治并完整随访的37例青少年胫骨结节撕脱性骨折患者。其中,男36例,女1例;年龄13~17岁,平均15.2岁。根据撕脱骨块的固定方式分为缝线桥组(可吸收带线锚钉双排缝线桥固定,19例)和空心螺钉组(普通空心金属螺钉加压固定,18例)。比较两组患者术后1、2、3个月和末次随访时(>12个月)的膝关节屈曲角度、Bostman功能评分,以及术后3、6个月和末次随访时(>12个月)的Tegner活动评分;记录术后3个月及末次随访膝关节功能满意度(Bostman评分分级);同时记录术后并发症情况。结果 所有患者随访12~24个月,中位随访时间18个月。术后缝线桥组术后1、2个月的膝关节屈曲角度、Bostman功能评分缝线桥组均优于空心螺钉组,差异均有统计学意义(P<0.05),术后3个月及末次随访两组膝关节屈曲角度、Bostman功能评分比较,差异无统计学意义(P>0.05)。术后3个月Tegner活动评分缝线桥组优于空心螺钉组,差异有统计学意义(P<0.05);术后6个月及末次随访Tegner活动评分两组比较差异无统计学意义(P>0.05)。术后3个月患者满意度情况(Bostman功能评分分级)缝线桥组优于空心螺钉组,差异有统计学意义(P<0.05);但末次随访患者满意度情况(Bostman功能评分分级)两组比较差异无统计学意义(P>0.05)。两组术后并发症发生率比较,差异无统计学意义(P>0.05)。结论 相比空心螺钉或结合钢丝张力带固定技术,缝线桥技术固定能达到螺钉固定强度,允许早期开展膝关节屈伸功能锻炼,术后异物激惹少,并发症发生率低,骨折愈合后也无需二次取出内固定。

切开复位空心螺钉结合锚钉固定术治疗糖尿病合并跟骨结节撕脱骨折的疗效观察

目的探讨糖尿病合并跟骨结节撕脱性骨折患者实施切开复位空心螺钉结合锚钉固定术(open reduction and internal fixation,ORIF)的效果。方法回顾性研究2020年8月—2022年4月北京丰台医院收治的22例糖尿病合并跟骨结节撕脱性骨折的患者,采用切开复位空心螺钉结合锚钉固定术治疗。围手术期及术后进行血糖的评估;术后随访使用足踝关节预后评分(foot and ankle outcome score,FAOS)、视觉模拟量表(visual analogue scale,VAS)、单脚跟抬高测试和X射线图像进行评估。结果所有骨折均在解剖位置愈合,没有出现术后固定失败、内固定松动移位以及皮肤感染、坏死等情况。术后随访6~8个月,所有患者都恢复了完全的足底屈曲范围和力量,没有步态异常或负重限制。FAOS评分:疼痛(80.85±6.20)分,症状(79.85±4.90)分,日常生活(72.35±8.00)分,运动和娱乐功能(68.25±11.93)分,足踝活动影响(77.47±6.70)分。VAS评分为(2.16±0.30)分。结论切开复位空心螺钉结合锚钉固定术是治疗糖尿病相关跟骨结节撕脱性骨折的有效手段,并显示出良好的功能和影像学结果。

基于三焦膜腠理论探讨脓毒症胃肠障碍发病机制

脓毒症是当前严重危害人类生命健康的重大疾病之一,其病死率居高不下。而胃肠道是脓毒症最早累及的靶器官之一,其功能障碍可进一步加快脓毒症进程,最终导致全身器官衰竭直至死亡。西医多采用液体复苏、保护胃黏膜、免疫调节、营养支持、改善菌群等手段治疗,但预后并不理想。中医多从脾胃角度论治该病,而深究其本质病机,则是邪伏三焦膜腠、气化失职,渐伤于脾胃肠腑,并弥漫三焦五脏、导致恶性循环的连续病理过程。因此,文章基于三焦膜腠理论,探讨脓毒症胃肠障碍的发病机制,以期为中医治疗脓毒症胃肠障碍提供理论依据。

多种术式联合治疗先天性固定性髌骨脱位1例

患者,男,18岁,自幼右侧髌骨向外脱位,起立后髌骨无法完全复位,伸膝迟滞,近2年随骨骼生长发育病情加重,于2021年1月14日至我院就诊。X线检查显示:右侧髌骨位于股骨髁外侧,右髁间窝空虚,见图1A。诊断为先天性固定性髌骨脱位。于2021年1月18日在气管插管全身麻醉下行多种术式联合治疗。

胫骨横向骨搬移术治疗血栓闭塞性脉管炎的研究进展

总结国内外胫骨横向骨搬移技术的发展革新以及该技术治疗血栓闭塞性脉管炎的研究进展,为未来血栓闭塞性脉管炎的骨横搬治疗提供参考。查阅关于横向骨搬移治疗血栓闭塞性脉管炎的文献,总结该技术的发展、应用、疗效以及优缺点等。胫骨横向骨搬移技术利用牵引产生的机械刺激促进肢体远端微循环重建,使缺血症状得到改善,提高保肢率,促进创面愈合,近年来临床应用显示了较好的疗效。胫骨横向骨搬移可显著改善肢体远端缺血坏死的问题,但其并发症、作用机制、技术要点等还存在争议。目前临床应用病例较少、应用范围不足,其有效性、远期疗效以及具体手术标准还需要进一步研究。

Anatomic location of the first dorsal extensor compartment for surgical De-Quervain’s tenosynovitis release:A cadaveric study

BACKGROUND De-Quervain’s tenosynovitis is a disorder arising from the compression and irritation of the first dorsal extensor compartment of the wrist.Patients who fail conservative treatment modalities are candidates for surgical release.However,risks with surgery include damage to the superficial radial nerve and an incomplete release due to inadequate dissection.Currently,there is a paucity of literature demonstrating the exact anatomic location of the first dorsal extensor compartment in reference to surface anatomy.Thus,this cadaveric study was performed to determine the exact location of the first extensor compartment and to devise a reliable surgical incision to prevent complications.AIM To describe the location of the first dorsal compartment in relation to bony surface landmarks to create replicable surgical incisions.METHODS Six cadaveric forearms,including four left and two right forearm specimens were dissected.Dissections were performed by a single fellowship trained upper extremity orthopaedic surgeon.Distance of the first dorsal compartment from landmarks such as Lister’s tubercle,the wrist crease,and the radial styloid were calculated.Other variables studied included the presence of the superficial radial nerve overlying the first dorsal compartment,additional compartment subsheaths,number of abductor pollicis longus(APL)tendon slips,and the presence of a pseudo-retinaculum.RESULTS Distance from the radial most aspect of the wrist crease to the extensor retinaculum was 5.14 mm±0.80 mm.The distance from Lister’s tubercle to the distal aspect of the extensor retinaculum was 13.37 mm±2.94 mm.Lister’s tubercle to the start of the first dorsal compartment was 18.43 mm±2.01 mm.The radial styloid to the initial aspect of the extensor retinaculum measured 2.98 mm±0.99 mm.The retinaculum length longitudinally on average was 26.82 mm±3.34 mm.Four cadaveric forearms had separate extensor pollicis brevis compartments.The average number of APL tendon slips was three.A pseudo-retinaculum was present in four cadavers.Two cadavers had a superficial radial nerve that crossed over the first dorsal compartment and retinaculum proximally(7.03 mm and 13.36 mm).CONCLUSION An incision that measures 3 mm proximal from the radial styloid,2 cm radial from Lister’s tubercle,and 5 mm proximal from the radial wrist crease will safely place surgeons at the first dorsal compartment.

结核感染T细胞γ干扰素释放试验及结核杆菌抗体在肺结核患者诊断中的应用

目的:探讨对结核感染T细胞γ干扰素释放试验(TB-IGRA)及结核杆菌抗体(TB-Ab)在肺结核患者诊断中的应用价值。方法:选择2022年1—12月荆州市第三人民医院收治的216例疑似肺结核患者,将病理学诊断作为“金标准”,依据是否存在结核病进行分组,分为肺结核组(n=151)和非肺结核组(n=65),采集患者清晨空腹静脉血分别检测TB-IGRA、TB-Ab水平,观察两项指标检测肺结核阳性结果,观察不同检查方式诊断效能。结果:肺结核组中TB-IGRA阳性检出率、TB-Ab阳性检出率均高于非肺结核组,差异有统计学意义(P<0.05)。TB-IGRA、TB-Ab诊断肺结核的阳性预测值、特异度比较,差异无统计学意义(P>0.05),TB-IGRA诊断肺结核的敏感度、阴性预测值高于TB-Ab,差异有统计学意义(P<0.05)。年龄>60岁肺结核患者TB-IGRA阳性检出率、TB-Ab阳性检出率高于≤60岁肺结核患者,差异有统计学意义(P<0.05)。结论:临床肺结核诊断中应用TB-IGRA、TB-Ab检查均有较高诊断效能,但相对而言TB-IGRA检查方式更优,且该检查方式阳性率易受年龄因素影响。

双排锚钉缝线桥与钢板固定治疗肱骨大结节骨折的临床疗效分析

目的比较双排锚钉缝线桥(doublerowanchorsuturebridge,DRA-SB)与钢板固定(platefixation,PF)治疗肱骨大结节(humerus greater tubercle,HGT)骨折的临床疗效。方法回顾性分析48例接受手术治疗的HGT骨折患者的临床资料,根据手术方式不同分为DRA-SB组(n=22)和PF组(n=26)。DRA-SB组采用内排联合外排锚钉的缝线桥固定,PF组采用肱骨近端锁定钢板固定。根据影像学检查和临床功能评估HGT位移、骨折愈合和并发症,应用视觉模拟评分(visual analogue scale,VAS)评估静息痛和活动痛,应用美国肩肘外科协会评分(Amecican shoulderand elbowsurgeons scale,ASES)评估肩关节功能,应用量角器测量肩关节最大活动度(range ofmotion,ROM)。结果两组患者在骨折愈合、住院和术后恢复日常生活时间上比较差异均无统计学意义(P均>0.05)。DRA-SB组患者切口长度明显短于PF组(P<0.05);DRA-SB组在缩短手术时间、减少术中出血量上均明显优于PF组(P均<0.05);DRA-SB组术后HGT位移较PF组增加(P<0.05)。两组术前肩关节静息痛VAS、活动痛VAS和肩关节功能ASES比较,差异均无统计学意义(P均>0.05);术后6个月时,两组患者肩关节静息痛VAS、活动痛VAS和肩关节功能ASES均明显优于术前(P均<0.05),但术后两组间静息痛VAS和活动痛VAS差异均无统计学意义(P均>0.05),而DRA-SB组术后肩关节功能ASES明显高于PF组(P<0.05),DRA-SB组在前屈和外展活动时,其最大ROM优于PF组(P<0.05)。结论DRA-SB和PF固定均是治疗HGT骨折的有效方法,但DRA-SB在手术时间、手术创伤和术后并发症上更具优势,同时也避免二次手术取出,临床接受度较高,是一种较为良好的手术方式。

超微血流成像和彩色多谱勒血流显像在乳腺BI-RADS 4类微小结节中的临床应用

目的探讨联合超微血流成像(superb microvascular imaging,SMI)和彩色多普勒血流显像(color Doppler flow imaging,CDFI)在乳腺影像学报告和数据系统(breast imaging reporting and data system,BI-RADS)分级为4类的微小结节诊断中的应用,并与超声造影(contrast-enhanced ultrasound,CEUS)结果比较。方法前瞻性纳入乳腺BI-RADS分级4类、最大径≤1 cm,并经术后病理检查证实的165例乳腺微小结节患者共165例病灶,其中良性病灶125例、恶性病灶40例,每例病灶均进行CDFI、SMI及CEUS检查,分析其声像图资料。采用Adler半定量法进行血流分级评价,比较CDFI和SMI显示微小结节内血流情况的差异。制定了CDFI、CDFI+SMI联合两种方式预测结节性质的诊断标准,分析了CDFI、CDFI和SMI联合及CEUS三种血流显像方法对乳腺微小结节性质的诊断价值。结果恶性乳腺微小结节患者患病年龄大于良性患者,CDFI及SMI对乳腺微小结节血流检出能力不同,CDFI血流显示率为47.3%(78/165)、SMI为83.6%(138/165)。以病理结果为金标准,CDFI、联合CDFI和SMI、CEUS三种方法诊断乳腺微小结节的灵敏度分别为72.5%、87.5%、72.5%,特异度分别为60.8%、59.2%、82.4%,准确性分别为63.6%、66.1%、80.0%,曲线下面积(area under the curve,AUC)分别为0.665、0.771、0.772,且三种方式对微小结节诊断的差异有统计学意义,表明联合应用CDFI和SMI的方式优于单独使用CDFI。结论对于诊断为BI-RADS 4类的乳腺微小结节,联合应用CDFI和SMI,可有助于提高判断结节性质的灵敏度,并减少有创性检查超声造影的使用。

超声对桥本甲状腺炎背景下结节与乳头状癌的鉴别诊断进展

桥本甲状腺炎是甲状腺组织常见的自身免疫性疾病,桥本结节是其一特殊类型,超声表现多样,与恶性结节声像特征重叠性大,桥本甲状腺炎患者患有甲状腺乳头状癌的风险较高,桥本结节与恶性结节的鉴别诊断在临床诊疗工作中尤其重要。因此,本研究旨在从常规超声、微血流成像、弹性剪切波成像及超声造影多种检查手段总结分析桥本甲状腺炎背景下桥本结节与恶性结节的不同之处,提高二者的超声鉴别诊断能力,减少不必要的有创诊疗,为患者疾病检查提供参考。

Multifocal Tuberculosis Revealed by Facial Paralysis

Introduction: Tuberculosis is a chronic infectious disease that remains a global public health problem. Children, accounting for 10% of cases, are particularly vulnerable to this disease. Based on a case of multifocal tuberculosis in a 14-month-old infant, the authors conducted a literature review on this condition. Observation: The case involved a 14-month-old infant referred from a health center for persistent symptoms including anemia, fever, and lateral deviation of the mouth during crying. Clinical examination revealed an infectious and meningeal syndrome, as well as facial paralysis. The results of brain imaging, cerebrospinal fluid examination, fundus examination, and gastric lavage fluid examination led to the conclusion of multifocal tuberculosis in the infant without association with HIV. Improvement was observed one week after the start of antituberculosis treatment, with complete recovery without sequelae after 12 months. Conclusion: Although rare, multifocal tuberculosis does exists and its diagnosis remains challenging in infants. Early treatment generally leads to favorable outcomes, especially in the absence of HIV coinfection.

Influences of Leading-Edge Tubercle Amplitude on Airfoil Flow Field

The influences of leading-edge tubercle amplitude on airfoil flow field have been analyzed at high angle of attack.The accuracy of a large eddy simulation(LES)research is validated through quantitative comparisons with corresponding experimental results.Then,a proper orthogonal decomposition(POD)analysis has been carried out based on the unsteady flow field and the fluid mechanisms of corresponding POD modes have been identified.Consequently,the influences of leading-edge tubercle amplitude have been uncovered.Since the streamwise vorticity is larger than that of small amplitude cases,the momentum transfer process at peaks is more obvious for large amplitude,leading to delayed flow separation.Both amplitude and wavelength play important roles in the generation of laminar separation bubble(LSB)at troughs.Moreover,the Karman vortex shedding process takes place at specific trough sections as pairs of periodic spatial structures exist in the dominant POD modes.The destruction of Karman vortex shedding process is strengthened along with the increase of amplitude.

肱骨大结节锁定板联合肩峰下前外侧小切口治疗肱骨大结节骨折的临床效果

目的观察大结节锁定板联合肩峰下前外侧小切口治疗肱骨大结节骨折的临床效果。方法选择2019年4月—2021年4月在柳州市工人医院经肩峰前外侧小切口联合大结节锁定板治疗的肱骨大结节骨折患者34例为观察组,选择传统三角肌胸大肌入路结合肱骨近端锁定系统(proximal humeral internal locking system,PHILOS)钢板治疗的肱骨大结节骨折患者30例为对照组,观察各患者骨折复位情况、切口情况、骨折愈合情况及其他并发症情况,评估是否合并腋神经损伤及肩关节功能(Constant-Murley评分)。结果观察组手术时间(50.2±10.5)min少于对照组(87.6±9.7)min,差异有统计学意义(t=14.734,P<0.05),观察组出血量少于对照组,差异有统计学意义(t=35.427,P<0.05),两组均无伤口感染及延迟愈合病例,对照组中2例患者出现骨折块移位,两组均没有患者出现腋神经损伤表现,术后1年时观察组肩关节功能评分(Constant-Murley评分)高于对照组,差异有统计学意义(t=9.134,P<0.05)。结论大结节锁定板联合肩峰前外侧小切口治疗肱骨大结节骨折的患者术后肩关节功能恢复良好,其手术时间及出血量明显少于传统术式,是一种治疗肱骨大结节骨折的优良手术方案。