A cohort of eleven patients, presenting with fifteen fingers exhibiting soft tissue loss subsequent to trauma or burns, was included in this study. The defects ranged from 20 to 45 mm in length and appeared at various anatomical sites on the dorsal aspect of the fingers. Coverage of exposed structures was achieved utilizing a local dorsal turnover adipo-fascial flap. Soft-tissue coverage was successfully obtained in all cases (n=15). Minor distal partial flap necrosis developed in 20% of procedures (n=3), which was managed effectively with conservative treatment. Partial split-thickness skin graft (STSG) loss occurred in cases with minor flap necrosis and in one additional instance, resulting in an overall incidence of 27% (n=4). All affected areas resolved without requiring secondary grafting. In summary, the dorsal turnover adipo-fascial flap serves as a technically straightforward reconstructive option, yielding satisfactory soft-tissue coverage and aesthetic results within this series. Although some distal flap-related complications occurred, they were limited and managed with conservative measures.

Naviculocuneiform (NC) arthrodesis is indicated for multiple pathologies, including degenerative and traumatic arthritis, progressive collapsing foot deformity, and medial column instability. Despite its broad application, no consensus exists regarding the optimal fixation construct. Shape-memory dynamic compression staples offer potential advantages in midfoot fusion compared to static fixation. To evaluate the feasibility of using 4-legged dynamic compression staples for NC arthrodesis and to characterize NC joint anatomy to guide implant selection and orientation. Level IV cadaveric study. Twenty fresh-frozen cadaveric lower limbs (10 pairs) were dissected to expose the NC joint. Measurements of the medial and intermediate cuneiform and navicular facets were recorded. Four-legged staples (26 and 30 mm) were inserted, and adjacent joints were examined for proximal or distal penetrance. Statistical analysis was performed using Mann-Whitney U tests with significance set at P ≤ .05. Staple fixation across the medial cuneiform-navicular articulation was safe in all 40 applications without talonavicular or tarsometatarsal breakthrough. In contrast, the intermediate segment demonstrated a significantly shorter length (35.83 ± 3.24 mm vs 46.40 ± 4.15 mm; P = .0002) and higher rates of talonavicular breakthrough at 20% for 26 mm staples and 60% for 30 mm staples. Longer intermediate segments correlated with reduced breakthrough (P = .0190). To our knowledge, this is the first study to quantify NC articulation lengths. Four-legged staples up to 30 mm in length were shown to be feasible for use in both dorsal-to-plantar or medial-to-lateral orientations at the medial cuneiform articulation. Due to breakthrough with the 4-legged staples, 2-legged staples (16-20 mm bridge) and staple legs ≤20 mm are advised for the intermediate segment to minimize iatrogenic injury risk.Level of Evidence: Level IV Cadaveric Study.

Plaque characteristics and clinical outcomes of non-culprit long lesions in patients with acute myocardial infarction.

BackgroundOptimal pre-analytical management of breast tissue specimens, particularly formalin fixation, is essential for accurate immunohistochemical (IHC) biomarker assessment in invasive breast cancer. Although international guidelines suggest using 4% neutral buffered formalin with controlled fixation time, many laboratories in low-resource settings deviate from these standards. This study aimed to determine whether three pre-analytical variables — fixation duration, cold ischemia time, and fixative preparation (4% neutral buffered versus 4% non-buffered formaldehyde) — impact the preservation and evaluation of tissue biomarkers in invasive breast cancer.MethodsWe conducted an exploratory, proof-of-concept, experimental study using fresh mastectomy tissue from a 34-year-old patient with invasive ductal carcinoma (pT4, hormone receptor-positive, HER2-negative, Ki67 = 40%) who had not received neoadjuvant chemotherapy. Fifty microsamples (5–15 mm in length, approximately 1 mm in diameter) were obtained using a 14-gauge core needle biopsy device and divided into four cohorts: (1) 19 samples fixed in 4% neutral buffered formaldehyde for 0.5 to 144 hours; (2) 19 samples fixed in 4% non-buffered formaldehyde for 0.5 to 144 hours; (3) 6 samples with delayed fixation (0.5 to 8 hours) then fixed in neutral buffered formaldehyde for 10 hours; (4) 6 samples with delayed fixation (0.5 to 8 hours) then fixed in non-buffered formaldehyde for 10 hours. Hormone receptors (estrogen receptor-ER, progesterone receptor-PR) and Ki67 expression were evaluated by IHC using the Allred scoring system and current international recommendations.ResultsFixative preparation had a statistically significant, yet small, impact on biomarker evaluation. The mean percentage of ER-positive cells was 96.89 ± 0.74% with neutral buffered formaldehyde compared to 94.32 ± 1.51% with non-buffered formaldehyde (p = 0.011). Similar trends were seen for PR (94.89 ± 0.95% vs. 92.63 ± 1.67%, p = 0.027) and staining intensity. However, Allred scores remained unchanged. Fixation duration was significantly correlated with biomarker expression (Spearman ρ between −0.60 and −0.83, p ≤ 0.007), with stable values from 0.5 to 48 h and a significant decline beyond 72 h (one-way ANOVA across fixation windows: all p < 0.01). Cold ischemia time was strongly correlated with decreased biomarker expression regardless of fixative preparation. Hormone receptor expression and Ki67 remained stable with minimal Allred score changes for up to 2 hours of cold ischemia, but significantly decreased after 2 hours, with scores decreasing in proportion to the duration of ischemia (p < 0.05).ConclusionsIn this single-specimen controlled experiment, non-buffered formaldehyde preserved tissue biomarkers with small but measurable differences relative to neutral buffered formaldehyde for IHC analysis, although these findings require validation in multi-patient studies. Consistent with current guidelines, a cold ischemia time of up to 1 hour maintained adequate biomarker preservation. These preliminary results may be relevant for pathology laboratories in resource-limited settings where neutral buffered formalin may not be easily accessible, and warrant further investigation across diverse tumor types and baseline expression levels, particularly tumors with ER-low-positive (1–10%) or heterogeneous expression.

ABSTRACT This study examined the structural potential of misfit wood – wood that does not meet the quality or measurement criteria for saw logs due to the curved or bifurcated shape – sourced from continuous forest harvesting. These logs are top segments of felled trees characterized by diverse morphologies with bottom diameters ranging from 96 mm to 187 mm. A total of twenty sizable logs, each measuring between 2,400 and 2,505 mm in length, were tested, including specimens from both Scots pine and silver birch species. Despite variations in shape and thickness, the tests revealed similar behavioural patterns: pronounced nonlinear load-deformation behaviour, and fibre buckling in compression and tensile failure roughly at midspan. The bifurcated specimens experienced fractures at the upper, thicker section of the bifurcation. Comparative calculations with a simplified analytical model, considering curvatures and diameters, demonstrated conservative results. This study has shown that the structural load-bearing capacity of curved and bifurcated round wood can be estimated using the current calculation methods.

Gold fiducial markers (GMs) are widely used in prostate radiotherapy; however, their magnetic susceptibility can reduce visibility on T2-weighted (T2w) MRI and may compromise CT-MRI registration. Using coil-shaped platinum fiducial markers (PMs) and GMs (5mm in length; diameters 0.35-0.75mm), we acquired 3 T T2w fast spin-echo MRI in an agar phantom and CT/cone-beam CT (CBCT) in a water-equivalent phantom under clinical settings. MRI visibility was quantified using the signal void area (SVA) and region-of-interest [ROI] value contrast (RVC), and CT/CBCT artifacts were quantified using an artifact index (AI). Additionally, to reflect clinical use, we evaluated CT-referenced registration estimation errors after automatic CT-MRI registration using a phantom containing a registration target. Registration errors were comparable at 0.35mm, but were significantly smaller for PMs at 0.50mm and 0.75mm (p < 0.01). PMs may enable accurate T2w-based CT-MRI registration without increasing CT/CBCT artifacts.

To evaluate the safety and effectiveness of intravascular lithotripsy (SEISMIQ intravascular lithotripsy [IVL] system; Boston Scientific Corporation, Marlborough, Massachusetts) for treating calcified above-the-knee (ATK) lesions in patients with peripheral artery disease. RESTORE ATK was a prospective, single-arm study that enrolled from 10 sites between January 20, 2023, and December 13, 2023. Ninety-five patients with de novo, moderate to severe calcifications of the femoropopliteal segments were treated using the tested device to modify calcium. Adjunctive drug-eluting technology was not permitted. Primary endpoints were <50% residual diameter stenosis after IVL treatment (by independent core laboratory-adjudicated angiography) and 30-day incidence of major adverse events (MAEs): death, clinically driven target lesion revascularization (CD-TLR), or major amputation. Secondary endpoints included patency, ankle-brachial index, and Rutherford classification (RC) through 6 months. Baseline RC included RC2 (23.2%), RC3 (70.5%), or RC4 (6.3%). Lesions averaged 96.0 mm in length, with 93.7% severely calcified and a mean baseline diameter stenosis of 93.7%. Postprocedural residual stenosis of <50% was achieved in all patients, meeting the predefined performance goal. Three patients (3.2%) received provisional stent placement. Patients had a mean residual stenosis of 21.2% and acute luminal gain of 3.2 mm. No MAEs occurred through 30-day follow-up. At 6 months, target lesion patency was 66.3%, and freedom from CD-TLR was 97.9%. A high proportion of patients demonstrated ≥1 RC improvement at 30-day (93.5%) and 6-month (91.2%) follow-up. This IVL system demonstrated effective treatment of calcified ATK lesions by successfully reducing calcific stenoses with minimal complications and sustained clinical improvement through 6 months.

This study evaluated tooth discolouration potential of triple antibiotic paste (TAP) containing either minocycline or cefuroxime, Ledermix and Odontopaste using spectrophotometric analysis. Sixty extracted human maxillary central incisors were standardised to 17 mm in length. After canal preparation with ProTaper Next to F5, specimens were randomly allocated to 6 groups (n=10). (Group A-F) Ledermix, TAP with minocycline, TAP with cefuroxime, Odontopaste, positive control (blood) and negative control (saline). Medicaments were placed via apical access to preserve crown integrity. Colour measurements were recorded using a spectrophotometer (Vita Easyshade Advance) at baseline, 3 days, 1 week, 2 weeks and 12 weeks. Specimens were stored at 37°C in darkness between the measurements. Colour changes (ΔE) were calculated using CIE Lab* formula. Data were analysed using two-way analysis of variance (ANOVA) with Bonferroni post-hoc tests (α=0.05). All experimental groups showed significant discolouration at 12 weeks (P < .05), exceeding the clinically perceptible threshold (ΔE > 3.7). Triple antibiotic paste with minocycline demonstrated the highest discolouration (ΔE=22.86 ± 9.99), followed by Ledermix (ΔE=19.11 ± 11.26) and TAP with cefuroxime (ΔE=18.72 ± 8.37), with no significant difference between the latter 2 (P > .05). Odontopaste showed the least discolouration (ΔE=10.06 ± 5.10). All medicaments exhibited progressive, time-dependent discolouration (P < .05). All tested antibiotic-containing medicaments caused clinically perceptible tooth discolouration. Triple antibiotic paste containing cefuroxime showed numerically lower discolouration than minocycline containing TAP, although both exceeded clinically acceptable thresholds and were not significantly different from Ledermix (P > .05). Odontopaste exhibited the lowest discolouration among the tested medicaments (ΔE=10.06), yet still exceeded the clinically acceptable limit.

Off-target myocardial necrosis due to incomplete balloon occlusion during retrograde coronary venous ethanol ablation.

Background and ObjectivesThis study aims to evaluate the push-out bond strength of a hydraulic calcium silicate sealer (HCSS) (AH Plus Bioceramic; Dentsply Sirona, Tulsa, OK, USA), to dentin following calcium hydroxide (Ca(OH)2) removal using different irrigation protocols and to assess the sealer-dentin adhesive interface.Materials and MethodsForty-four single-rooted human teeth were prepared, standardized to 16 mm in length, and instrumented with ProTaper Next to an X5 size. After final irrigation, the canals were filled with Ca(OH)2 for two weeks. The specimens were divided into four groups according to the irrigation protocol: distilled water (control), ethylenediaminetetraacetic acid (EDTA) combined with NaOCl, citric acid, and glycolic acid. The canals were subsequently dried and filled with HCSS, a premixed hydraulic calcium silicate sealer, using an X5 gutta-percha cone. The specimens were stored at 37 °C and 100% humidity for 7-day before testing. Push-out bond strength was measured using a universal testing machine, and failure modes were evaluated under a stereomicroscope.ResultsGlycolic acid exhibited the highest overall bond strength, particularly in the coronal third (p < .05), compared to distilled water. EDTA + NaOCl and citric acid demonstrated similar bond strength values, both statistically superior to distilled water (p < .05), but not significantly different from glycolic acid (p > .05). Failure mode analysis revealed predominantly cohesive failures, with no statistically significant variation in failure modes among irrigation protocols or root canal thirds (p > .05).ConclusionThe irrigation protocol used for Ca(OH)2 removal significantly influenced the push-out bond strength of HCSS. Glycolic acid demonstrated the highest bond strength, particularly in the coronal third, while EDTA + NaOCl and citric acid also enhanced bonding compared to the control group.

Context:The long-term retention of fiber posts in endodontically treated teeth is fundamentally dictated by the integrity of the adhesive bond between resin cement and the dentin hybrid layer, as any compromise in quality jeopardizes the post-cement-dentin interface. This study evaluates the bonding efficacy of total-etch, self-etch, and self-adhesive systems to root dentin for fiber post cementation. The findings provide evidence-based guidance for selecting an optimal adhesive strategy in clinical practice.Objective:This study compared the bonding potential of total-etch (TE), self-etch (SE), and self-adhesive systems for glass fiber post-to-root dentin.Materials and Methods:Sixty mandibular premolars with a single root extracted freshly were standardized to a root measuring 15 mm in length after decoronation. Root canal treatment was performed, with sodium hypochlorite and ethylenediaminetetraacetic acid as irrigating solutions. The canal was obturated with gutta-percha and sealer using the sectional obturation technique. Post space was prepared with fiber post drills. The samples were distributed into three groups (n = 20) based on the adhesive system applied to lute the glass fiber post: • Group A: TE adhesive system, • Group B: SE adhesive system, • Group C: Self-adhesive system. Middle portion of sample was used to evaluate bond strength under a universal testing machine.Results:The Statistical analysis was conducted using Stata Statistical Software, Version 18 (StataCorp, 2023; College Station, TX: StataCorp LLC). A one-way analysis of variance (ANOVA) was performed to compare the means among groups, with statistical significance set at P < 0.05. Post hoc comparisons were carried out using Tukey’s honest significant difference test to determine significant differences between the groups. Therefore, found that group B (SE adhesive) exhibited the highest mean bond strength at 131.03 N, which was statistically highly significant (P = 0.001) compared to the other groups. Group A (TE adhesive) demonstrated a bond strength of 115.25 N, while Group C (self-adhesive) showed the lowest bond strength at 75.04 N.Conclusion:The SE adhesive system demonstrated superior bond strength compared to TE and Self-Adhesive systems, making it the best choice for fiber post luting.

Background/Objectives. Warfarin possesses a bitter taste and requires a personalized dose in the range of 4.5 to 77 mg per week. This study investigated the potential for personalizing warfarin dosing by developing taste-masked matrix pellets. Pellets, supposedly, can be counted and orally administered in the required quantity to obtain the required dose. Methods. The study evaluated the effects of drug load (10, 20, and 30 wt.%) on the duration of thermal postprocessing (to achieve the desired aspect ratio) and drug release. The warfarin sodium clathrate was characterized by determining its pKa value and dissolution kinetics in water, stomach-simulated media (0.1 M HCl, pH 1.2), and mouth-simulated media (phosphate-buffered solution (PBS), pH 6.8). A solid dispersion of warfarin sodium clathrate with Kollicoat® Smartseal 100 P or Eudragit® E PO was prepared using hot melt extrusion (HME). The mechanical properties of extruded filaments were characterized by measuring their elastic modulus. The microparticles (1–4 mm in length) prepared with filament cut pelletizing were thermally treated to produce ‘smoothened’ particles, which were analyzed with optical microscopy and drug release testing. Conclusions. Microparticles with smoothened edges and an aspect ratio close to one are expected to improve mouthfeel and potentially patient compliance. No drug release was observed in mouth-simulated media, which indicated applicability to the taste masking of the microparticles. The proposed thermal treatment of HME microparticles, exemplified in this study, is a novel concept with underexplored potential in preparing taste-masked matrix pellets and dose personalization.

To assess the feasibility, safety, and effectiveness of a retrograde technique for inserting a full-length ramus screw through an osseous starting site (OSS) at the anteromedial corner of the para-symphyseal bone, and to analyze the position and parameters of the ramus osseous fixation pathway (OFP) based on screw placement. From August 2020 to December 2021, patients with fractures of the anterior acetabular column or the superior pubic ramus treated with a retrograde superior ramus screw were included in this study. The OSS was located at the anteromedial corner of the para-symphyseal bone. Perioperative and postoperative complications were recorded. The position and the parameters of the ramus OFP were established based on the postoperative CT images of the inserted full-length screws. Twenty-three (23/25) full-length large-diameter (≥ 7mm) ramus screws were successfully inserted in 19 (19/20) cases. Postoperative CT images showed that all full-length screws were positioned within a bony corridor, located anteriorly and cranially to the acetabular dome. The OFP measures 119.9 ± 7.6mm in length, with angle projection of 16.9 ± 6.3 degrees to the coronal plane and 38.6 ± 3.9 degrees to the horizontal plane. During follow-up, bone union was achieved in all cases, with no instances of bone delayed union or screw breakage observed. Via the OSS at the anteromedial corner of the para-symphyseal bone, the inserted full-length large ramus screws were situated anteriorly and cranially to the acetabular dome. This retrograde technique has been demonstrated to be a feasible, safe, and effective surgical procedure.

The modern market of seeding machines offers a large number of long-developed and well-proven models. Among them are various modifications of grain stubble seeders SZS-2.1, combining the qualities of a combined tool for continuous pre-sowing cultivation, sowing, application of granulated mineral fertilizers to the soil and soil compaction. Another advantage of SZS seeders is the preservation of stubble on the soil surface after sowing, which makes it possible to use them in areas with a risk of wind erosion. Despite the undeniable advantages, SZS seeders also have disadvantages, which include the labor intensity of reconfiguration to the required seeding rate; especially when switching from sowing one crop to another. This is due to the need to replace the sprockets on the shaft in the drive mechanism of the seeding units. To eliminate this drawback of SZS type seeders, some modern manufacturers use continuously variable speed reducers of various designs instead of a set of replaceable sprockets in the seeding unit drive. However, such a design solution leads not only to an increase in the cost of the seed drill, but also to a decrease in its reliability.Objective: to study the possibility of reducing the labor intensity of reconfiguring the SZS type seed drill to seeding rates without using replaceable sprockets and a variable speed reducer in the seeding unit drive.Methods: The experimental data were obtained by mathematically processing the results of laboratory studies conducted in the mechanization and economic research department of the Federal State Budgetary Scientific Institution "Omsk Scientific Center" in 2025. Results: The conducted research has established that a rational design solution for upgrading the seeding system of SZS type seeders is the use of grooved rollers of standard cross-section, but increased to 85 mm in length instead of standard rollers, which are 39 mm long.Rollers increased to 85 mm in length provide seeding of all main crops with any existing seeding rates at a minimum rotation speed and a constant drive gear ratio i = 0.259 (which corresponds to using a sprocket from a set of replaceable z = 36). Rollers of this length can also be used to sow barley and oats, but at a higher rotation speed of the seeding apparatus shaft (i = 0.667 at z = 14). In this case, damage to the seeds of these crops will be minimal due to their filminess. At the same time, the length of the roller, equal to 85 mm, provides the necessary increase in the seeding rate, taking into account the decrease in seed germination in field conditions (up to 60%). Conclusion: The practical significance of the conducted research consists in substantiating the possibility of increasing the efficiency of using stubble grain seeders of the SZS type, reducing their cost in relation to seeders with continuously variable speed reducers with a simultaneous increase in reliability, as well as expanding the possibilities of their use in the implementation of differentiated seeding in the precision farming system.

The study discusses the design and development of a lab-scale Savonius wind turbine made from recycled components to provide a sustainable micro-generation solution. The study will focus on an important area where there exists an ever-increasing demand for an affordable, low-cost energy solution in modern-day urban and rural settings. The experiment utilizes Response Surface Methodology (RSM) with Central Composite Design to determine optimal values of important design parameters such as the number of blades and length of blades of this wind energy system. Analysis of variance also shows that the performance of this wind energy system is significantly affected by linear, quadratic, and interaction effects of these important parameters. The results of the optimization process were used to determine an optimum setup of three blades, 300 mm in length, that achieved a maximum efficiency of 12.77% with an output power of 2.779 Watts, close to the optimum. High R 2 values with non-significant results for the lack of fit tests in all empirical equations proved that the developed mathematical models were adequate. These results clearly indicate that recycled Savonius wind turbines could offer an efficient, low-cost alternative for wind power micro-energy production in isolated regions.

Experimental study of flow boiling heat transfer in smooth and circular pin-fin minichannels

Three-Year Clinical Follow-Up of a Novel Everolimus-Coated Balloon for Patients With In-Stent Restenosis.

Abstract Direct laser writing of fiber Bragg gratings (FBG) in free-standing optical fibers is often avoided due to the cylindrical geometry of the fiber, which distorts laser beam focusing and affects process efficiency. A common approach to mitigate this is immersing the fiber in an index-matching liquid, which adds complexity to the fiber preparation process. Here, we propose an alternative and novel point-by-point (PbP) grating writing approach in free-standing optical fibers that leverages the influence of fiber curvature on focusing conditions to our advantage, allowing for beam shaping, fast alignment, and efficient inscription of high reflectivity FBGs with very low birefringence. We first used ray tracing simulations to accurately assess astigmatic focusing conditions inside optical fiber caused by fiber’s cylindrical shape. Then we implemented an additional slit beam shaping by means of spatial light modulator to achieve nearly circular intensity distribution and refractive index modification in the fiber core cross-section. Moreover, we developed a novel alignment approach that relies on fiber curvature for fast and sub-micrometer accuracy alignment of the laser focus coordinate system to that of the optical fiber. We benchmarked our approach by inscribing a series of first-order PbP FBGs up to 20 mm in length, evaluating grating strength, insertion losses and birefringence under varying focusing conditions and for different values of laser pulse energy. With accurate modeling and experimental implementation, we were also able to demonstrate highly reflective FBGs with birefringence as low as Δ n &lt; 3.3 × 10 − 6 . Our results highlight a promising approach for further development toward versatile, and high-precision FBG inscription technique tailored to the demanding requirements of advanced fiber sensing, high-power lasers, astrophotonics filtering, and quantum photonic systems.

In contrast to push-broom hyperspectral imagers, the snapshot approach substantially reduces sensitivity to platform motion and vibration, which constitutes a crucial advantage for underwater mobile deployment. Here, we present the design and development of a compact, integral-field snapshot underwater hyperspectral imager. The system comprises a relay panchromatic imaging channel with high spatial resolution and a spectral imaging channel with lower spatial resolution. By fusing high-resolution panchromatic images with low-resolution spectral images, we obtain hyperspectral images with a enhanced spatial resolution. Both the panchromatic imaging channel and the spectral imaging channel share a common front objective, which features a focal length of 16mm and a field of view of 38∘×29∘. By leveraging prism dispersion, the spectral imaging system covers a wavelength range from 450 to 1000nm with a spectral resolution of better than 6nm at 532nm. By introducing a relay imaging system into the panchromatic channel, we reduce the back focal distance of the front objective lens while simultaneously shortening the overall length of the spectral imaging system. This addresses a key limitation of existing dual-channel snapshot underwater hyperspectral imaging systems-namely, their excessive length, which hinders integration with underwater vehicles. Compared with conventional dual-channel systems, the proposed design achieves a reduction in length of 182mm, resulting in compact dimensions of 145mm in diameter and 452mm in length, thereby facilitating integration onto underwater vehicle platforms. In addition, a spectral-guided spatial-spectral fusion framework is specifically developed for the dual-channel configuration. The proposed method separately encodes spectral and spatial features and integrates them through multi-scale alignment and progressive reconstruction to handle the large resolution gap between channels while preserving spectral fidelity. Experimental results obtained across diverse scenes demonstrate the system's superior spectral imaging performance, thereby establishing it as a robust solution for underwater snapshot hyperspectral imaging.

Cyborg insect is a living insect equipped with electronic devices for allowing remote control of their movement. Due to their small size and locomotor capability, cyborg insects have potential advantages for application in cluttered environments where human cannot operate. Past studies have proposed various cyborg insects using different insect species and custom-made controllers equipped with sensors for desirable tasks. Those cyborg insects were usually equipped with the electronic devices on the back, leading to the loss of useful body shape of the platform organism. Although the body shape of animals is known to contribute to effective locomotion in their living environments, it has been unexamined how the arrangement of electronics to cyborg insect affects its locomotion. Here, we developed a miniature wireless controller that is fully implantable to small insects and demonstrated that the implantation of electronic device enhances traversal performance of the cyborg cockroach. The developed wireless controller was 10 mm in width, 10 mm in length, and 3 mm in height. It served sub-1 GHz communication and electrical signal output for maneuvering locomotion of cockroach. The cockroach with the implant maintained the innate tendency and traversal performance in gap negotiation comparable to intact animals, whereas the cyborg cockroach with the electronics mounted on the back exhibited degraded performance. The automatic stimulation algorithm successfully navigated the cockroach with the implant to the target with a success rate of 90.9%. The proposed technique will boost the capability of cyborg insects in challenging terrains in real scenarios.