Pelvic fractures present a severe and complex clinical challenge. This study aimed to compare ultrasound-guided ilioinguinal (IIN) and iliohypogastric nerve (IHN) blocks with conventional general anesthesia (GA) in patients undergoing internal fixation surgery for pelvic fractures. A retrospective analysis was conducted on 100 patients equally divided into ultrasound-guided and control groups. The study monitored hemodynamics, intraoperative anesthesia drug usage, postoperative pain levels, and the incidence of adverse reactions between the 2 groups. The ultrasound-guided group underwent ultrasound-guided IHN and IIN blocks combined with GA. The ultrasound-guided group exhibited significant advantages for hemodynamic measurements at specific time points, lower consumption of Propofol and Remifentanil, and reduced pain intensity across all evaluated time intervals (P < .05). The incidence rate of adverse reactions was significantly lower in the ultrasound group (P = .016). Ultrasound-guided anesthesia is a superior alternative to conventional GA for managing pelvic fractures through internal fixation surgery. It offers advantages in terms of hemodynamic stability, drug consumption, postoperative pain management, and adverse reaction reduction.

暂无摘要。

UNASSIGNED: Despite the fact that China amounts to one-fifth of the world\'s population, has a higher proportion of the elderly, and has a higher prevalence of osteoporosis and fracture, limited studies have investigated the association between dietary patterns and bone mineral density (BMD) as well as fracture risk among the elderly Chinese population. We aimed to investigate the association between different dietary patterns and BMD as well as the risk of fractures, and this association may vary between elderly women and men.
UNASSIGNED: Building upon the China Osteoporosis Prevalence Study, we included 17,489 subjects aged ≥40 years old randomly sampled across 44 counties/districts of 11 provinces or municipalities in China who completed a food frequency questionnaire. BMD was measured by dual x-ray absorptiometry. Vertebral fracture was defined based on lateral spine radiographs using the semi-quantitative technique of Genant.
UNASSIGNED: A diet rich in \"carnivorous\", \"vegetarian\", \"dairy, fruit, and egg\" was significantly associated with higher BMD at total hip (TH), femoral neck (FN), and lumbar spine 1-4 (L1-4). Yet, a diet rich in \"beverage and fried food\" was associated with a lower BMD at the FN and L1-4. High quartiles of the carnivorous diet were associated with 34%-39% reduced risk of clinical fracture in the past 5 years and vertebral fracture. Stronger associations were observed among women. Sensitivity analysis among postmenopausal women presented even stronger positive associations between carnivorous and vegetarian diets and high BMD, as well as between carnivorous diet and reduced risk of fractures.
UNASSIGNED: Our study suggested that a diet rich in meat, vegetables, and dairy, fruit, and eggs might be associated with greater BMD and a lower fracture risk, while beverage and fried foods may be associated with a lower BMD at L1-4, especially among elderly women. These findings are relevant to provide recommendations on dietary nutrition regarding the elderly population at high risk of osteoporosis and fractures, especially postmenopausal women.

The stiffness of an ideal fracture internal fixation implant should have a time-varying performance, so that the fracture can generate reasonable mechanical stimulation at different healing stages, and biodegradable materials meet this performance. A topology optimization design method for composite structures of fracture internal fixation implants with time-varying stiffness is proposed, considering the time-dependent degradation process of materials. Using relative density and degradation residual rate to describe the distribution and degradation state of two materials with different degradation rates and elastic modulus, a coupled mathematical model of degradation simulation mechanical analysis was established. Biomaterial composite structures were designed based on variable density method to exhibit time-varying stiffness characteristics. Taking the bone plate used for the treatment of tibial fractures as an example, a composite structure bone plate with time-varying stiffness characteristics was designed using the proposed method. The optimization results showed that material 1 with high stiffness formed a columnar support structure, while material 2 with low stiffness was distributed at the degradation boundary and inside. Using a bone remodeling simulation model, the optimized bone plates were evaluated. After 11 months of remodeling, the average elastic modulus of callus using degradable time-varying stiffness plates, titanium alloy plates, and stainless steel plates were 8 634 MPa, 8 521 MPa, and 8 412 MPa, respectively, indicating that the use of degradable time-varying stiffness plates would result in better remodeling effects on the callus.
理想的骨折内固定植入物刚度应具有随时间变化的性能，使骨折在不同愈合阶段都能产生合理的力学刺激，可降解材料可以满足这一性能。考虑到材料降解过程的时间依赖性，提出一种具有时变刚度的骨折内固定植入物复合结构拓扑优化设计方法。采用相对密度和降解残留率描述两种具有不同降解速度和弹性模量的材料分布和降解状态，建立降解模拟-力学分析耦合数学模型；基于变密度法设计双材料复合结构，使之具有时变刚度特性。以胫骨骨折治疗用的接骨板为例，采用所提出方法设计具有时变刚度特性的复合结构接骨板，优化结果显示高刚度的材料1形成柱状的支撑结构，低刚度的材料2分布在降解边界和内部。利用骨重塑模拟模型对优化后的接骨板进行评估，经过11个月重塑，使用可降解时变刚度接骨板、钛合金接骨板和不锈钢接骨板的骨痂平均弹性模量分别为8 634、8 521、8 412 MPa，表明使用可降解时变刚度接骨板可使骨痂取得更好的重塑效果。.

Unconventional reservoirs, such as shale and tight formations, have become increasingly vital contributors to oil and gas production. In these reservoirs, fractures serve as crucial spaces for fluid migration and storage, making their precise assessment essential. Array acoustic logging stands out as a pivotal method for evaluating fractures. To investigate the impact of fracture width, fracture-filling conditions, and acoustic frequency on compressional and shear waves, a three-dimensional variable mesh finite difference program was employed for acoustic logging numerical simulation. Firstly, numerical models representing fractured formations with varying fracture widths and distinct fluid-filling conditions were established, and array acoustic logging numerical simulations were conducted at different frequencies. Subsequently, the waveform data were processed to extract acoustic characteristic parameters, such as velocities and amplitude attenuations of compressional and shear waves. Finally, a quantitative analysis was conducted to examine the variation patterns of characteristic parameters of refracted compressional and shear waves in relation to fracture properties. The research results indicate that amplitude attenuation information derived from borehole wave modes is particularly sensitive to the changes in fracture properties. As fracture width increased, we observed a significant amplitude attenuation in both compressional and shear waves, proportional to the logarithm of the attenuation coefficients. Furthermore, when the fracture width was constant, gas-filled fractures exhibited more prominent amplitude attenuation than water-filled fractures, with shear wave attenuation being more sensitive to the filling material. Moreover, from a quantitative perspective, the analysis revealed that the attenuation coefficients of refracted compressional and shear waves exhibited an exponential variation with gas saturation. Notably, once fracture width and filling conditions were established, the amplitudes of compressional and shear waves at the dominant frequency of 40 kHz were significantly reduced compared to those at 8 kHz, accompanied by increased attenuation. Subsequent quantitative analysis revealed that, when the product of fracture width and dominant frequency remains constant, the corresponding attenuation coefficient ratios approach 1. This indicates that the attenuation process of acoustic propagation in fractured media follows the principle of acoustic similarity. The findings of this study provide reference for further research on fracture property evaluation methods based on array acoustic logging data.

BACKGROUND: Lumbar-iliac fixation (LIF) is a common treatment for Tile C1.3 pelvic fractures, but different techniques, including L4-L5/L5 unilateral LIF (L4-L5/L5 ULIF), bilateral LIF (BLIF), and L4-L5/L5 triangular osteosynthesis (L4-L5/L5 TOS), still lack biomechanical evaluation. The sacral slope (SS) is key to the vertical shear of the sacrum but has not been investigated for its biomechanical role in lumbar-iliac fixation. The aim of this study is to evaluate the biomechanical effects of different LIF and SS on Tile C1.3 pelvic fracture under two-legged standing load in human cadavers.
METHODS: Eight male fresh-frozen human lumbar-pelvic specimens were used in this study. Compressive force of 500 N was applied to the L4 vertebrae in the two-legged standing position of the pelvis. The Tile C1.3 pelvic fracture was prepared, and the posterior pelvic ring was fixed with L5 ULIF, L4-L5 ULIF, L5 TOS, L4-L5 TOS, and L4-L5 BLIF, respectively. Displacement and rotation of the anterior S1 foramen at 30° and 40° sacral slope (SS) were analyzed.
RESULTS: The displacement of L4-L5/L5 TOS in the left-right and vertical direction, total displacement, and rotation in lateral bending decreased significantly, which is more pronounced at 40° SS. The difference in stability between L4-L5 and L5 ULIF was not significant. BLIF significantly limited left-right displacement. The ULIF vertical displacement at 40° SS was significantly higher than that at 30° SS.
CONCLUSIONS: This study developed an in vitro two-legged standing pelvic model and demonstrated that TOS enhanced pelvic stability in the coronal plane and cephalad-caudal direction, and BLIF enhanced stability in the left-right direction. L4-L5 ULIF did not further improve the immediate stability, whereas TOS is required to increase the vertical stability at greater SS.

UNASSIGNED: To investigate the effectiveness of Allgöwer-Donati suture in open reduction and internal fixation of Schatzker type Ⅴ and Ⅵ tibial plateau closed fractures.
UNASSIGNED: A clinical data of 60 patients with Schatzker type type Ⅴ and Ⅵ tibial plateau closed fractures, who met the selection criteria and admitted between May 2022 and May 2023, was retrospectively analyzed. After open reduction and internal fixation via double incisions, the incisions were closed with conventional mattress suture in 30 cases (control group) and Allgöwer-Donati suture in 30 cases (observation group). There was no significant difference in gender, age, fracture side and type, time from injury to operation, body mass index, and other baseline data between the two groups ( P>0.05). The incidence of incision-related complications after operation, visual analogue scale (VAS) score of incision at 3 days and 1 and 2 weeks after operation, and the short-form 36 health survey scale (SF-36) [physical functioning (PF), role physical (RP), bodily pain (BP), and general health (GH)] at 12 weeks after operation were compared between the two groups.
UNASSIGNED: All operations of the two groups successfully completed. All patients were followed up 6-14 months (mean, 12 months). Incision fluid leakage occurred in 1 case of observation group and 7 cases of control group within 1 week after operation, and the incisions healed after symptomatic treatment. The incisions of other patients healed by first intention. The incidence of early incision complications in observation group was significantly lower than that in control group ( P<0.05). No late incision complications was found in the two groups. There was no significant difference in VAS scores at each time point between the two groups ( P>0.05). The VAS score significantly decreased with the increase of time in the two groups, showing significant differences between the different time points ( P<0.05). There was no significant difference in SF-36 scores (PF, RP, BP, and GH) between the two groups at 12 weeks after operation ( P>0.05).
UNASSIGNED: Compared with conventional mattress suture, Allgöwer-Donati suture is effective in open reduction and internal fixation via double incisions for Schatzker type Ⅴand Ⅵ tibial plateau closed fractures, which can reduce the incidence of early incision complications.
UNASSIGNED: 探讨Schatzker Ⅴ、Ⅵ型胫骨平台闭合性骨折内固定术中采用Allgöwer-Donati 缝合技术缝合切口的临床效果。.
UNASSIGNED: 回顾性分析2022年 5月—2023 年 5月收治且符合选择标准的60例Schatzker Ⅴ、Ⅵ型胫骨平台闭合性骨折患者临床资料。双切口切开复位内固定术中，30例采用普通褥式缝合技术缝合切口（对照组），30例采用Allgöwer-Donati 缝合技术（观察组）。两组患者性别、年龄、骨折侧别及类型、受伤至手术时间及身体质量指数等基线资料比较，差异均无统计学意义（ P>0.05）。比较两组术后切口相关并发症发生情况；术后3 d及1、2周手术切口疼痛视觉模拟评分（VAS）；术后12周健康状况调查问卷（SF-36）生理健康部分评分，包括生理功能（physical functioning，PF）、生理职能（role physical，RP）、躯体疼痛（bodily pain，BP）、总体健康（general health，GH）4项。.
UNASSIGNED: 两组手术均顺利完成。患者均获随访，随访时间6～14个月，平均12个月。术后1周内观察组1例、对照组7例出现切口渗液，经对症处理后愈合；其余患者切口均Ⅰ期愈合；观察组术后早期切口并发症发生率低于对照组，差异有统计学意义（ P<0.05）。两组均未发生远期切口并发症。随时间延长，两组VAS评分均降低，各时间点间差异均有统计学意义（ P<0.05）；术后各时间点VAS评分组间差异均无统计学意义（ P>0.05）。术后12周两组SF-36评分中PF、RP、BP、GH 4项差异均无统计学意义（ P>0.05）。.
UNASSIGNED: 相较于普通褥式缝合，Schatzker Ⅴ、Ⅵ型胫骨平台闭合性骨折内固定术中采用Allgöwer-Donati缝合技术缝合切口，可降低术后早期切口并发症发生风险。.

UNASSIGNED: To summarize the morphological characteristics of sagittal beak-like deformity of head-neck fragment in femoral intertrochanteric fractures and to investigate the technical skills in fracture reduction.
UNASSIGNED: A clinical data of 31 patients with femoral intertrochanteric fractures between May 2021 and April 2023 was retrospectively analyzed. The fractures had sagittal beak-like deformity of head-neck fragment in all patients. There were 13 males and 18 females, with an average age of 76.2 years (range, 68-83 years). The time from injury to operation was 36-76 hours (mean, 51.2 hours). Fractures were classified as type A1.2 in 10 cases, type A1.3 in 11 cases, type A2.2 in 6 cases, and type A2.3 in 4 cases according to the AO/Orthopaedic Trauma Association (AO/OTA)-2018 classification; and as type A1.3 in 10 cases, type A2.1 in 11 cases, type A2.2 in 6 cases, type A2.3 in 2 cases, and type A2.4 in 2 cases according to a novel comprehensive classification for femoral intertrochanteric fractures proposed by the \"Elderly Hip Fracture\" Research Group of the Reparative and Reconstructive Surgery Committee of the Chinese Rehabilitation Medical Association. Based on preoperative X-ray films, CT scan and three-dimensional reconstruction, the fractures were classified into two types: type 1 (14 cases), with uncomplicated fracture morphology, severe bone interlocking and (or) soft tissue incarceration; type 2 (17 cases), with severe fracture crushing, obvious dissociation between bone blocks, and severe soft tissue hinge destruction. After the failure of the closed reduction, all patients underwent fracture reduction assisted with instrument via anterior minimal incision and proximal femoral nail antirotation nails internal fixation. The operation time, intraoperative fluoroscopy, intraoperative visible blood loss, length of hospital stay, and incidence of complications were recorded. The fracture reduction quality and stability score were assessed at immediate after operation under fluoroscopy. The fracture healing was evaluated and healing time was recorded by X-ray films. The pain visual analogue scale (VAS) score was performed at 48 hours after operation and Parker-Palmer activity score at 3 months after operation for function evaluation.
UNASSIGNED: The operation time was 39-58 minutes (mean, 46.3 minutes); fluoroscopy was performed 13-38 times (mean, 23.5 times) during operation; the intraoperative visible blood loss was 45-90 mL (mean, 65.3 mL). The fracture reduction quality and stability score were rated as good in 29 cases and acceptable in 2 cases. The pain VAS score was 2-6 (mean, 3.1) at 48 hours after operation. Eleven patients developed deep vein thrombosis of the lower limbs after operation. Patients were hospitalized for 6-10 days (mean, 7.3 days). All patients were followed up 5-8 months (mean, 6.5 months). All fractures healed at 3.5-8.0 months after operation (mean, 4.5 months). Parker-Palmer activity score at 3 months after operation was 9 in 28 cases and 6 in 3 cases.
UNASSIGNED: The femoral intertrochanteric fracture with sagittal beak-like deformity of head-neck fragment is difficult to manually reduce. The pin combined with cannulated screw insertion to the neck cortex can hold the fragment and assist fracture reduction, which is a simple and effective technique.
UNASSIGNED: 总结股骨转子间骨折中头颈骨块在矢状面呈“鸟嘴样”向前翘起的形态特征和复位技巧。.
UNASSIGNED: 回顾性分析2021 年 5 月—2023年4月收治的31例头颈骨块在矢状面呈“鸟嘴样”向前翘起的股骨转子间骨折患者临床资料。男13例，女18例；年龄68～83岁，平均76.2岁。受伤至手术时间36～76 h，平均51.2 h。骨折按国际内固定研究协会/美国骨创伤协会（AO/OTA）-2018分型标准分型： A1.2型 10例、A1.3 型11例、A2.2型6例、A2.3型 4例；按中国康复医学会修复重建外科专业委员会“老年髋部骨折”研究小组提出的新综合分类法分型：A1.3型 10例，A2.1 型11例，A2.2 型6例，A2.3型 2例，A2.4型 2例。术前经X线片、CT扫描及三维重建，将骨折分为两种类型：第1类14例，骨折形态不复杂但有严重骨性交锁和（或）软组织嵌顿；第2类17例，骨折粉碎严重、骨块之间明显分离错位、软组织铰链破坏。患者均经闭合手法复位失败，选择经前方小切口拧入空心螺钉辅助复位头颈骨块，再按常规进行股骨近端防旋髓内钉内固定。记录手术时间、术中透视次数、术中显性失血量、住院时间及并发症；术后即刻X线透视下评估骨折复位质量及内固定术后稳定性，定期复查X线片观察骨折愈合情况及愈合时间；术后48 h行疼痛视觉模拟评分（VAS）评定疼痛程度；术后3个月按Parker-Palmer活动能力评分进行功能评定。.
UNASSIGNED: 手术时间39～58 min，平均46.3 min；术中透视13～38次，平均23.5次；术中显性失血量45～90 mL，平均65.3 mL。术后即刻影像判断骨折复位质量及内固定术后稳定性评分均为优29 例、良2 例。术后48 h VAS评分为2～6分，平均3.1分。术后11例发生下肢深静脉血栓形成，无其他并发症发生。患者住院时间6～10 d，平均7.3 d。术后均获随访，随访时间5～8个月，平均6.5个月。X线片复查示骨折均愈合，愈合时间3.5～8.0个月，平均4.5个月。术后3个月Parker-Palmer活动能力评分达9分28例、6分3例。.
UNASSIGNED: 股骨转子间骨折中，头颈骨块在矢状面呈“鸟嘴样”向前翘起时手法复位困难，经前方导针结合空心螺钉辅助复位，简单有效，能取得满意疗效。.

UNASSIGNED: To compare the effectiveness of long and short proximal femoral nail anti-rotation (PFNA) in the treatment of type A2.3 intertrochanteric fracture of femur (IFF).
UNASSIGNED: The clinical data of 54 patients with type A2.3 IFF admitted between January 2020 and December 2022 were retrospectively analyzed. According to the length of PFNA nail used in the operation, they were divided into long nail group (PFNA nail length>240 mm, 24 cases) and short nail group (PFNA nail length≤240 mm, 30 cases). There was no significant difference in baseline data such as gender, age, fracture side, body mass index, and time from fracture to operation between the two groups ( P>0.05). The operation time, intraoperative blood loss, intraoperative fluoroscopy frequency, intraoperative reduction quality score, fracture healing, and complications of the two groups were recorded and compared. Harris score was used to evaluate the hip function of patients at 1 year after operation. According to the relationship between the fracture line of type A2.3 IFF and the lesser trochanter, the two groups of patients were divided into type Ⅰ(the fracture line extends to the level of the lesser trochanter), type Ⅱ(the fracture line extends to less than 2 cm below the lesser trochanter), and type Ⅲ (the fracture line extends to more than 2 cm below the lesser trochanter), and the postoperative stability and internal fixator loosening of each subtype were evaluated.
UNASSIGNED: The operation time, intraoperative blood loss, and intraoperative fluoroscopy frequency in short nail group were significantly less than those in long nail group ( P<0.05). There was no significant difference in the intraoperative reduction quality score between the two groups ( P>0.05). Patients in both groups were followed up 12-18 months, with an average of 13.5 months. The postoperative stability score of short nail group was significantly lower than that of long nail group ( P<0.05). The Harris score in the long nail group was significantly higher than that in the short nail group at 1 year after operation ( P<0.05), but there was no significant difference in Harris score grading between the two groups ( P>0.05). Complications occurred in 3 cases of the long nail group (including 1 case of coxa varus caused by external nail entry point and 2 cases of loose internal fixator), and 7 cases of the short nail group (including 1 case of coxa varus caused by external nail entry point and 6 cases of loose internal fixator). Neither group had any anterior femoral arch damage, there was no significant difference in the incidence of complications between the two groups ( P>0.05). The number of type Ⅲ patients was relatively small and not included in the statistics; there was no significant difference in the postoperative stability score and the incidence of internal fixator loosening between the long and short nail groups in type Ⅰ patients ( P>0.05). In type Ⅱ patients, the postoperative stability score and the incidence of internal fixation loosening in the long nail group were significantly better than those in the short nail group ( P<0.05).
UNASSIGNED: Long PFNA fixation for type A2.3 IFF has longer operation time and more intraoperative blood loss, but the overall stability of fracture is better after operation. For type A2.3 IFF with fracture line extending to less than 2 cm below the lesser trochanter, long PFNA is used for fixation, although the surgical trauma is large, but the postoperative stability is better than that of short PFNA; for type A2.3 IFF with fracture line extending to the lesser trochanter, there is no significant difference in postoperative stability between long and short PFNAs.
UNASSIGNED: 比较长、短股骨近端防旋髓内钉（proximal femoral nail anti-rotation，PFNA）治疗A2.3型股骨转子间骨折（intertrochanteric fracture of femur，IFF）的临床疗效。.
UNASSIGNED: 回顾分析2020年1月—2022年12月收治且符合选择标准的54例A2.3型IFF患者临床资料，根据术中使用的PFNA主钉长度分为长钉组（PFNA主钉长度>240 mm，24例）和短钉组（PFNA主钉长度≤240 mm，30例）。两组患者性别、年龄、骨折侧别、身体质量指数、骨折至手术时间等基线资料比较差异均无统计学意义（ P>0.05）。记录并比较两组患者手术时间、术中失血量、术中透视次数、术中复位质量评分、骨折愈合情况及并发症发生情况；术后1年采用Harris评分评价患者髋关节功能。根据A2.3型IFF骨折线与小转子的关系，将两组患者细分为Ⅰ型（骨折线延伸至小转子水平）、Ⅱ型（骨折线延伸至小转子下方2 cm以内）、Ⅲ型（骨折线延伸至小转子下方2 cm以外），评价各亚型患者术后稳定性及内固定物松动情况。.
UNASSIGNED: 短钉组手术时间、术中失血量、术中透视次数均少于长钉组（ P<0.05）；两组术中复位质量评分比较差异无统计学意义（ P>0.05）。两组患者均获随访，随访时间12～18个月，平均13.5个月。短钉组术后稳定性评分低于长钉组（ P<0.05）。术后1年长钉组Harris评分优于短钉组（ P<0.05），但两组Harris评分等级比较差异无统计学意义（ P>0.05）。长钉组有3例发生并发症（包括1例入钉点偏外导致髋内翻，2例复位丢失均发生内固定物松动），短钉组有7例发生并发症（包括1例入钉点偏外导致髋内翻，6例复位丢失均发生内固定物松动），两组均无股骨前弓破损发生；两组并发症发生率比较差异无统计学意义（ P>0.05）。Ⅲ型患者因例数较少未纳入统计；Ⅰ型患者中长、短钉组术后稳定性评分及内固定物松动发生率比较差异无统计学意义（ P>0.05）；Ⅱ型患者中长钉组术后稳定性评分及内固定物松动发生率均明显优于短钉组（ P<0.05）。.
UNASSIGNED: 长PFNA固定A2.3型IFF手术时间长、术中失血量多，但患者术后总体稳定性更好。对于骨折线延伸至小转子以下2 cm以内的A2.3型IFF使用长PFNA固定，虽然手术创伤大，但患者术后稳定性较短PFNA好；对于骨折线延伸至小转子水平的A2.3型IFF使用长、短PFNA固定术后稳定性无明显差异。.

UNASSIGNED: To investigate the effectiveness of HoloSight Orthopaedic Trauma Surgery Robot-assisted infra-acetabular screw placement for treatment of acetabular fractures.
UNASSIGNED: The clinical data of 23 patients with acetabular fractures treated with open reduction and internal fixation and infra-acetabular screw placement in two medical centers between June 2022 and October 2023 were retrospectively analyzed. According to the the method of infra-acetabular screw placement, the patients were divided into navigation group (10 cases, using HoloSight Orthopaedic Trauma Surgery Robot-assisted screw placement) and freehand group (13 cases, using traditional X-ray fluoroscopy to guide screw placement). There was no significant difference in gender, age, body mass index, cause of injury, time from injury to operation, and Judet-Letournel classification between the two groups ( P>0.05). The time of infra-acetabular screw placement, the fluoroscopy frequency, the guide pin adjustment times, the quality of screw placement, the quality of fracture reduction, and the function of hip joint were compared between the two groups.
UNASSIGNED: All patients completed the operation successfully. The time of screw placement, the fluoroscopy frequency, and guide pin adjustment times in the navigation group were significantly less than those in the freehand group ( P<0.05). The quality of screw placement in the navigation group was significantly better than that in the freehand group ( P<0.05). Patients in both groups were followed up 6-11 months, with an average of 7.7 months. There were 9 and 9 cases in the navigation group and the freehand group who achieved excellent and good fracture reduction quality at 1 week after operation, and 12 and 12 cases with excellent and good hip joint function at last follow-up, respectively, and there was no significant difference between the two groups ( P>0.05). The fractures in both groups healed well, and there was no significant difference in healing time ( P>0.05). During the follow-up, there was no complication related to screw placement, such as failure of internal fixation, vascular and nerve injury, incisional hernia.
UNASSIGNED: In the treatment of acetabular fractures, compared with the traditional freehand screw placement, the HoloSight Orthopaedic Trauma Surgery Robot-assisted screw placement can reduce the time of screw placement, improve the accuracy of screw placement, and reduce the amount of radiation, which is an efficient, accurate, and safe surgical method.
UNASSIGNED: 探讨使用HoloSight创伤骨科手术机器人辅助二窗螺钉植入治疗髋臼骨折的疗效。.
UNASSIGNED: 回顾分析2022年6月—2023年10月于两个医学中心行切开复位内固定并植入二窗螺钉治疗的23例髋臼骨折患者临床资料。根据二窗螺钉植入方式不同分为导航组（10例，采用HoloSight创伤骨科手术机器人辅助植钉）和徒手组（13例，采用传统X线透视引导植钉）。两组患者性别、年龄、身体质量指数、致伤原因、受伤至手术时间及Judet-Letournel分型等基线资料比较差异均无统计学意义（ P>0.05）。比较两组患者二窗螺钉植钉时间、透视次数、导针调整次数、螺钉植入质量、骨折复位质量及髋关节功能。.
UNASSIGNED: 所有患者均顺利完成手术。导航组植钉时间、透视次数和导针调整次数明显少于徒手组（ P<0.05）。导航组螺钉植入质量明显优于徒手组，差异有统计学意义（ P<0.05）。两组患者均获随访，随访时间6～11个月，平均7.7个月。导航组和徒手组术后1周骨折复位质量达优良者分别为9、9例，末次随访时髋关节功能达优良者分别为12、12例，组间比较差异均无统计学意义（ P>0.05）。两组患者骨折均愈合良好，愈合时间比较差异无统计学意义（ P>0.05）。两组随访期间均未发生内固定失效、血管神经损伤、切口疝等植钉相关并发症。.
UNASSIGNED: 髋臼骨折治疗中，与传统徒手植钉比较，HoloSight创伤骨科手术机器人辅助植入二窗螺钉能减少植钉时间、提高植钉准确性、减少辐射量，是一种高效、准确及安全的手术方式。.