Double Row Research Articles

Determination of loads for load-bearing components in crane slewing mechanism considering their embedding stiffness

This article discusses selected structural solutions of pivot mechanisms, which are classified as internal transport means. The construction of a coronary bearing is discussed, which is an excellent solution for the rotary embedding of the carrier system of the crane. The paper presents a numerical method of determining internal load distribution in calculation rows of double row ball bearing. In the calculated characteristics, the pre-clamp of the screws holding susceptible rings, the susceptibility of the bodies, the variable angle of operation of the rolling elements of the bearing are considered. The basic problems of modeling component parts of coronary bearings are discussed. Different vulnerabilities of an open ring girder with local stiffeners resulting from its foundation on flaccid support structures have been considered in the considerations. The results obtained were presented in the form of charts.

Evaluation of Integrated Management Practices of South American Tomato Leaf Miner Tuta absoluta in Tomato

Tomato is grown in an area of 36000 ha in Chittoor district of Andhra Pradesh. South American tomato leaf miner, Tuta absoluta has become major pest in tomato growing areas causing 50-60% damage. Even though pest damage starts from seedling stage, damage is not noticed by farmers till fruiting stage due to the pest feeding habit, and spraying chemicals repeatedly at this stage is of no use. Moreover, it causes environmental pollution and pesticide residual effects on consumers. Hence, an on-farm trial on integrated management of the Tuta absoluta was conducted during Rabi, 2020-21. The IPM practices included were installation of pheromone traps @ 25 per hectare; spraying neem oil @ 5 ml/l, twice @20 and 40 DAT and need based chemical sprays. In IPM plots, pest damage was low in crop grown under single row planting i.e., 9% followed by double row planting i.e., 12.6% whereas in farmers practice it was 21.5% and 24.3% in single row planting and double row planting respectively in crop planted during December, 2020. Crop planted during January suffered more than December planted cropi.e., in IPM plots it was 12.5% & 15.5% whereas in farmers practice it was 27.6 and 31.2% in single row planting and double row planting respectively. In December planted crop, Fruit yield of 54.2t/ha and 52.8t/ha was recorded in IPM and farmers practice respectively. In January planted crop it was 51t/ha and 49.5t/ha in IPM and farmers practice respectively. IPM along with planting of crop during December under single row method of planting found to be effective in managing the pest.

Ilyocyprisleptolinea Wang & Zhai, sp. nov., an ostracod (Ostracoda, Crustacea) from the late Quaternary of Inner Mongolia, northern China.

Ilyocyprisleptolinea Wang & Zhai, sp. nov. is described from late Quaternary sediments in central-eastern Inner Mongolia, northern China. The new species, which has a carapace shape and pitted surface typical of the genus, is characterised by double rows of fine, densely arranged marginal ripplets, separated by an inner list, along both anterior and posterior calcified inner lamellae in the left valve. Outline analysis and Principal Component Analysis indicate that its morpho-space overlaps with I.bradyi Sars, 1890, I.japonica Okubo, 1990, and I.mongolica Martens, 1991, which have living or fossil representatives in Inner Mongolia, but it is clearly discriminated from I.innermongolica Zhai & Xiao, 2013. Judging from the relatively coarse lithology dominated by silt and sand, and the lack of accompanying brackish-water ostracods, I.leptolinea Wang & Zhai, sp. nov. may have lived in a relatively shallow freshwater lake. It perhaps can be added to the list of species that went extinct during the Quaternary, but the timing and process of extinction await further investigation.

Instability and Atomization of Liquid Cylinders after Shock Wave’s Impacting

This paper describes an experimental study on the instability and atomization of liquid cylinders after the impact of shock waves. Single row water column, in-line double rows water columns and alongside triple rows water columns were evaluated in a horizontal shock tube. The diameter of water column and the Mach number in the experiments were 2.0–4.14 mm and 1.10–1.25, respectively. The global instability along the axial direction of water cylinders was focused. Using a high-speed camera, the developments of spike height, bubble depth and turbulent mixing zone, width were measured. Some comparison was also made between the present experimental results and the existing theoretical model.

Tension band wiring versus suture anchor technique in patellar inferior pole fracture: Novel double row suture anchor technique.

Patellar inferior pole fractures are challenging to obtain sufficient fixation. The purpose of this retrospective, case-controlled study was to compare the clinical and radiological outcomes between tension band wiring (TBW) and our novel double-row suture anchor (SA) technique in patellar inferior pole fractures. This retrospective study included patients who underwent TBW or SA fixation for patellar inferior pole fractures from 2015 to 2019. A total of 63 patients were divided into two groups according to the surgical procedure: the TBW group (n=35) and the SA fixation group (n=28). The visual analog scale score, range of motion of the knee, Lysholm score, Kujala patellofemoral score, and patient satisfaction score were evaluated for clinical and functional outcomes. Radiological outcomes included the time to radiological union, loss of reduction, and the Insall-Salvati (IS) ratio. Significant improvements in clinical outcomes were observed in both groups with no significant differences. Bone union was achieved in all patients, and there was no significant difference in the time to radiological union and the IS ratio between the two groups. All patients in the TBW group underwent additional surgeries for implant removal. However, none of the patients in the SA group underwent implant removal or experienced skin irritation. Our novel double-row SA technique could provide comparable fixation strength and good clinical outcomes, with fewer complications in patellar inferior pole fractures. This novel SA technique is a satisfactory alternative treatment for patellar inferior pole fractures.

Rates of medial and lateral row failure and risk factors for Re-tear in arthroscopic double row rotator cuff repair

A common postoperative complication after rotator cuff repair is re-tear requiring a secondary procedure. Double row and trans-osseous equivalent repair techniques have become increasingly popular in recent years, however repair failure remains a relatively common complication after primary rotator cuff repair. A retrospective observational study of 389 consecutive patients undergoing arthroscopic double-row rotator cuff repair from February 1, 2014 to March 31, 2020 was conducted. Univariate and multivariate statistics were used to assess differences in demographics, comorbidities, and tear characteristics between patients who experienced re-tear and those who did not. Repair failures were confirmed by plain MRI or intraoperatively during repeat surgical treatment. A subgroup analysis of patients who experienced re-tear due to medial row failure was conducted. The overall re-tear rate was 8.2% (32 patients). Six patients (1.5%) experienced medial row failure, while 26 patients (6.7%) experienced lateral row failure. The average time to re-tear was 279.3 ± 291.2 days. On multivariate analysis, patients with Goutallier Classification ≥3 (OR: 4.274, p = 0.046) and 3 anchor repair (OR: 5.387, p = 0.027) were at significantly increased risk for any re-tear after controlling for other tear characteristics. No statistically significant independent risk factors for medial row failure were identified after controlling for confounding variables. Goutallier classification greater than 3 and a primary repair with 3 anchors are significant risk factors for re-tear after double row rotator cuff repair, however they are not associated with increased occurrence of medial row failure. Further evaluation of risk factors for medial row failure is required to avoid this rare but serious re-tear pattern.

A Coupling Model of High-Speed Train-Axle Box Bearing and the Vibration Characteristics of Bearing with Defects under Wheel Rail Excitation

A three-dimensional vehicle-axle box bearing coupling model is established. The model can calculate the contact force in three directions and obtain the dynamic response of axle box bearing under the real vehicle running environment. The load distribution on the double row tapered roller bearing and the vehicle is analyzed, and the co-simulation is conducted by comprehensively considering the force transmission between vehicle and bearing. Taking into account the great impact of defects on the bearing, three different types of bearing defects are added into the model, respectively. The simulation results verify the effectiveness of the model. The model is also verified by using the rolling and vibrating test rig of single wheelset. It is concluded that the simulation results show good agreement with experimental results. The influence of track irregularity on the system motion state is studied by using axis trajectory and vibration RMS (Root Mean Square value). The results show that the influence of track irregularity and wheel flat scar on axle box bearing cannot be ignored. The RMS of acceleration will change greatly due to the existence of defects. Wheel flat scar will greatly interfere with the extraction of bearing defect, but it can be selected at high speed and low frequency to monitor the existence of wheel flat scar, and select low speed and high frequency to monitor the existence of bearing defect. The research results are helpful to the detection of wheel flat scar and axle box bearing defect.

Oilseed-legume intercropping is productive and profitable in low input scenarios

CONTEXTThe cost of fertiliser and fungicide is rising rapidly, increasing farmers' financial risk and reducing gross margins. By utilising the synergistic interspecies interactions that increase system resource efficiency and provide a buffer against disease, oilseed-legume intercropping may provide an opportunity to allow farmers to maintain yield while reducing these input costs. OBJECTIVETo investigate the effect of varying fertiliser and fungicide inputs on the yield efficacy and economics of chickpea-linseed and chickpea-canola intercrops in mechanised broadacre systems in a Mediterranean climate. METHODSThe oilseed species linseed (Linum usitarissimum L.) and canola (Brassica napus L.) were intercropped with Kabuli chickpea (Cicer arietinum L.) in a double skip row arrangement under varying fertiliser and fungicide regimes. These intercrops were compared with their respective sole crops for land use efficiency and economic productivity. RESULTS and CONCLUSIONSThe land equivalency ratio (LER) of the intercrop under nil fertilisation averaged 1.04 compared with 0.94 under high fertilisation. The LER of the intercrops under nil fungicide averaged 1.39 compared with 0.93 under high fungicide. Intercropping provided gross margin stability across environments, while the gross margins of the sole crops varied depending on environment, a pattern which held even when grain prices and input costs varied. In summary, the greatest intercrop land use and economic benefit occurred in the low input treatments. SIGNIFICANCEThe overyielding and high gross margins of the low input intercrops suggest that oilseed-legume intercropping may have potential as a profitable lower risk alternative to traditional high input monocultures in a Mediterranean climate.

Growth and Yield Potential of New Sugarcane Varieties during Plant and First Ratoon Crops

Newly released sugarcane varieties need to be adapted to various environments. This research was aimed at examining the growth and yield potential of newly released varieties of sugarcane in the first year as plant cane (PC) and the second year as first ratoon cane (RC1) on dry land. The research was carried out at Wedarijaksa station, Trangkil Sugar Mill area, Pati, Central Java in 2019–2021. Four sugarcane varieties were grown using a double rows system, AAS Agribun, ASA Agribun, AMS Agribun, and CMG Agribun and one commercial variety, PSJK 922. Measurements of crop growth were made periodically: yield components at harvest in PC-RC1, and physiological characteristics 5 months after planting. The results indicate that mean tonnes of cane and sugar per hectare between PC and RC1 decreased by 22.7% and 21.0%, respectively, for AAS Agribun, ASA Agribun, and CMG Agribun due to decreased stem weights. AMS Agribun showed the smallest decrease in tonnes of cane (4%) and increase in tonnes of sugar per hectare (2%) from PC to RC1. The highest number of tonnes of sugar in PC was achieved by ASA Agribun (12.8 t ha−1), slightly above PSJK 922 (12.69 t ha−1). The decline in tonnes of cane and sugar needs to be reduced by the continuously improving cultivation techniques. The mean photosynthetic water use efficiency of tested new varieties was 7.46 µmol CO2 mol H2O−1. These research findings provide information on crop performance and can be used as a basis for selecting varieties to be developed in the region. Further studies will be required to test these new sugarcane varieties in a wide range of agroecological zones in Indonesia.

Shoulder surgeon techniques and preferences in treatment of massive rotator cuff tears: current practices for rotator cuff repair and superior capsule reconstruction.

Massive rotator cuff tears can be difficult to manage and consensus regarding treatment is debated. The purpose of this questionnaire study was to examine surgeon techniques and considerations for treatment of massive rotator cuff tears including how they implement superior capsule reconstruction (SCR), when indicated. A 21-item questionnaire was sent to members of the American Shoulder and Elbow Surgeons and the American Orthopedic Society for Sports Medicine. Questions covered management preferences for massive rotator cuff tears, rotator cuff repair and SCR techniques, beliefs about SCR, implant choices, use of augments, demographics, and patient management scenarios. The questionnaire had 230 respondents. In rotator cuff repair of massive rotator cuff tears, preferred responses were long head biceps tendon preservation (when asymptomatic, 45.3%), routine subacromial decompression (62.1%), solid threaded anchors (71.1%), double row configuration (65.1%), and bone marrow stimulation of the footprint (55.6%). For providers that perform SCR (n=166), preferred strategies included long head biceps tenodesis (55.4%), human dermal allograft tissue (93.2%), glenoid fixation with 3 implants (71.2%) using solid threaded anchors (42.3%), and humeral fixation with 2 solid threaded anchors medially (71.0%), and 2 solid threaded anchors laterally (46.9%). Other highly recommended strategies were side-to-side repair to the posterior rotator cuff if able (97.6%) and to use the thickest graft available (62.2%). Despite improved techniques and growing interest in SCR, many questions still remain. This study identifies the significant variability in repair constructs and methodology with SCR; further investigation into these variables could be analyzed to identify best practice guidelines.

Molecular mechanism of claudin-15 strand flexibility: A computational study.

Claudins are one of the major components of tight junctions that play a key role in the formation and maintenance of the epithelial barrier function. Tight junction strands are dynamic and capable of adapting their structure in response to large-scale tissue rearrangement and cellular movement. Here, we present molecular dynamics simulations of claudin-15 strands of up to 225 nm in length in two parallel lipid membranes and characterize their mechanical properties. The persistence length of claudin-15 strands is comparable with those obtained from analyses of freeze-fracture electron microscopy. Our results indicate that lateral flexibility of claudin strands is due to an interplay of three sets of interfacial interaction networks between two antiparallel double rows of claudins in the membranes. In this model, claudins are assembled into interlocking tetrameric ion channels along the strand that slide with respect to each other as the strands curve over submicrometer-length scales. These results suggest a novel molecular mechanism underlying claudin-15 strand flexibility. It also sheds light on intermolecular interactions and their role in maintaining epithelial barrier function.

Lax pair formulation for the open boundary Osp(1∣2) spin chain

Based on the Lax pair formulation, we study the integrable conditions of the Osp(1∣2) spin chain with open boundaries. We consider both the non-graded and graded versions of the Osp(1∣2) chain. The Lax pair operators M ± for the boundaries can be induced by the Lax operator M j for the bulk of the system. They correspond to the reflection equations (RE) and the Yang–Baxter equation, respectively. We further calculate the boundary K-matrices for both the non-graded and graded versions of the model with open boundaries. The double row monodromy matrix and transfer matrix of the spin chain have also been constructed. The K-matrices obtained from the Lax pair formulation are consistent with those from Sklyanin’s RE. This construction is another way to prove the quantum integrability of the Osp(1∣2) chain. We find that the Lax pair formulation has advantages in dealing with the boundary terms of the supersymmetric model.

Impact and Assessment of Frontline Demonstration (FLD) Management of Weeds in Pineapple by Plastic Mulch

Twenty-five numbers of frontline demonstrations were conducted on management of weed in pineapple by plastic mulch 2014-2016 & 2016-2018 subsequently with an ultimate aim to supressed growth of weeds and boost farmer income because weeding accounts approximate 30–40% of the overall cost of crop. Pineapple cultivation with 50 micron black polythene sheet mulching with double row spacing i.e. 90 x 60 x 30cm not only suppresses the weed growth but conserves the soil moisture, which leads to early flowering, better vegetative growth & higher yield over control (Farmer practice). The demonstrated recorded an average yield ranging from 43.18 to 45.90 t/ha with a mean of 44.54 t/ha. The per cent increase yield in demonstration 49.77% during 2014-16 and 66.67% during 2016-18 respectively, over the farmer practice. The average ranges of extension gap (14.35- 18.36 t/ha), technology gap (9.10- 11.82 t/ha) and technology index (21.49-16.55%) were during the period under study. The demonstrated field gave higher mean gross return (Rs. 267240 /ha) and mean net returns (Rs. 191740/ha) with average benefit: cost ratio (3.54) compared to the local checks (1.71). Present results clearly show that the yield and economics of pineapple can be boost up by adoption of recommended technology.

Surgical Repair and Augmentation of a Large Type-2 Re-tear of the Rotator Cuff with a Novel Biocomposite Scaffold: A Case Report

Case A 55-year-old female presented with pain and weakness in her right shoulder after a new traumatic event occurred. She had undergone a rotator cuff repair to this right shoulder 4 months earlier with dermal strip augmentation secondary to poor tissue quality at the time of index surgery. For historical context, her contralateral shoulder had undergone a previous primary rotator cuff repair with xenograft, which failed, and was ultimately revised to a full thickness repair 2 years prior. A repeat MRI demonstrated a recurrent large type-II rotator cuff tear with grade 3 Goutallier fatty infiltration. A novel biocomposite scaffold (BioBrace™) was used to augment a revision double row bridge repair with margin convergence. MRI at three and eight months after surgery suggested functional remodeling and growth of new tissue. At 10 months, arthroscopy was performed to evaluate bicipital pain and arthroscopic images demonstrated full incorporation of the biocomposite scaffold within the underlying native tendon and an intact repair. The source of bicipital pain was unrelated to the implant and a biceps tenodesis was performed to resolve the pain. Clinical outcomes were assessed preoperatively and at 1 year postoperatively using the Visual Analog Scale (VAS), American Shoulder and Elbow Surgeons (ASES) Shoulder Score, and Single Assessment Numeric Evaluation (SANE). Conclusion The use of a novel biocomposite scaffold augmentation for revision rotator cuff repair demonstrated evidence of healing, incorporation, and remodeling at 10 months post-procedure. VAS, ASES, and SANE pre- and post-operative outcome scores were analyzed at 1 year demonstrating significant improvement across all metrics. This case report suggests the use of a novel biocomposite rotator cuff augment can provide a via option for revision rotator cuff repair.

A PROSPECTIVE STUDY OF FUNCTIONAL OUTCOME AFTER ROTATOR CUFF REPAIR FOR LARGE ROTATOR CUFF TEARS FOLLOWING ARTHROSCOPIC DOUBLE ROW -TRANSOSSEOUS EQUIVALENT REPAIR V/S SINGLE ROW ROTATOR CUFF REPAIR

Tears of the rotator cuff tendons remain a common source of pain and disability among the adult population. Age appears to be the most common aetiology, with 25% of individuals in their 60's and in 50% of individuals in their 80's being found to have rotator cuff tears. Prevalence of partial thickness rotator cuff tears ranges from 15 to 32% in the general population, and is higher (40%) in the dominant arm. Arthroscopic Adequate Initial xation plays a key role in achieving successful healing with rotator cuff tears. A number of surgical techniques have been described for the repair of rotator cuff injuries. These include xation both single- and double-row suture anchor techniques, transosseous Equivalent Repair. Much debate exists over the gold standard surgical technique, in particular with regards to Single Vs Double row methods.

Role of TM3 in claudin-15 strand flexibility: A molecular dynamics study.

Claudins are cell-cell adhesion proteins within tight junctions that connect epithelial cells together. Claudins polymerize into a network of strand-like structures within the membrane of adjoining cells and create ion channels that control paracellular permeability to water and small molecules. Tight junction morphology and barrier function is tissue specific and regulated by claudin subtypes. Here, we present a molecular dynamics study of claudin-15 strands within lipid membranes and the role of a single-point mutation (A134P) on the third transmembrane helix (TM3) of claudin-15 in determining the morphology of the strand. Our results indicate that the A134P mutation significantly affects the lateral flexibility of the strands, increasing the persistence length of claudin-15 strands by a factor of three. Analyses of claudin-claudin contact in our μsecond-long trajectories show that the mutation does not alter the intermolecular contacts (interfaces) between claudins. However, the dynamics and frequency of interfacial contacts are significantly affected. The A134P mutation introduces a kink in TM3 of claudin-15 similar to the one observed in claudin-3 crystal structure. The kink on TM3 skews the rotational flexibility of the claudins in the strands and limits their fluctuation in one direction. This asymmetric movement in the context of the double rows reduces the lateral flexibility of the strand and leads to higher persistence lengths of the mutant.

Experimental study on seismic behavior of precast concrete sandwich shear walls under high axial compression ratio

To shed light on the seismic behavior of precast concrete sandwich shear walls (PCSSWs) in high-rise buildings, reversed cyclic loading test were conducted on eight full-scale shear wall specimens under high axial compression ratio. Totally four variables were considered in the test, i.e. type of shear wall (PCSSW, non-insulated precast concrete shear wall (PCSW), cast-in-place (CIP) shear wall), location of insulation layer (off-center or center in the section), confinement at boundary elements (with or without confined core), and details of grouted sleeve connection (double or single row of grouted sleeves). Note that in this paper the PCSSWs with off-centered insulation layer had confined cores at boundary elements while steel stirrups for additional confinement were not used in the PCSSWs with centered insulation. Test results revealed that the PCSSWs showed failure mode, hysteresis loops, loading capacities and displacement ductility similar to PCSW and CIP specimens. The loading capacities of PCSSWs and CIP specimen increased by 8.2 % ∼12.4 % because of the confined core at boundary elements. The displacement ductility of specimens with confined boundary elements varied from 2.35 to 2.65, which was higher than that of the specimens with unconfined boundary elements (1.75 ∼ 2.10). Besides, the number of rows of grouted sleeves had minor effect on hysteretic response of specimens. Based on the test results, a quadrilinear degradation restoring force model was proposed.

Microstructural features of generative and vegetative organs of Allium saxatile growing in Georgia

The microstructural characteristics of the vegetative and generating organs of the medicinal plant Allium saxatile Bieb. has been studied, using Carl Zeiss, Jeneval light microscope and Omax stereoscopic microscope. The leaves of A. saxatile are bare and have toothed edge. Mesophyll of the leave is characterized with an isolateral structure. leaf-covering tissue is sharply cutinized, the cell membrane of the single-rowed epidermal tissue is strongly thickened. Stem is bare, the protective tissue is actively cutinized, the epidermis is in a single layer, its cells are characterized by a square shape and have a strong thickening of the outer periclinary walls. The vascular bundle is represented with a group layout of lumens of large and small-caliber conductive vessels of an oval and weakly angular shape.  The thickening of the shell of the vascular bundle is predominantly spiral. Inflorescence is round, with a frequent flower umbrella. The perianth is egg-bellish, its cover is free, elongated, pointed shape, pale pink in color. Filaments are longer than flowers of the perianth. Bulb is free, surrounded by an elongated-conical shape, brownish coloring, dried, leathery shell. The root of have shape of sphere, covering tissue of root – exoderm have double row of cells and is represented with thin-skinned smaller size and large, square-shaped cells.

A prospective observational study on cystic stump closure during laparoscopic cholecystectomy: silk sutures (intra-corporeal ligation) or locking clips (Hem-o-Lok®)

Objectives: The present study compares the clinicopathological features and outcomes of two cystic stump closure techniques (locking clips and intra-corporeal ligation with silk sutures) during laparoscopic cholecystectomy. Methods: This study was conducted in a tertiary health centre as a prospective observational study between October 5, 2021, and February 15, 2022. For randomisation, double rows of silk sutures were used to close the cystic stump in patients on the odd-numbered day of the month (Group 1). In contrast, a single-row locking clip (Hem-o-Lok®) (Group 2) was used to close the cystic stump in patients on the even-numbered day of the month. The study was terminated when at least 50 patients were reached in both groups. The clinicopathological differences and cholecystectomy outcomes were compared between the groups. Results: This observational study included 114 patients. Of the study cohort, 87 (76.3%) were female, and the mean age was 46.54 ± 14.74 years. There were 64 (56.1%) patients in Group 1 and 50 (43.9%) patients in Group 2. Preoperative ERCP requirement was higher in Group 1 (15.6% vs 4%, p = 0.045), while the mean operation room time was longer in Group 2 (p = 0.015). Morbidity rates were similar in the two groups (3.1% vs 2%) (p > 0.05). Conclusions: Cystic stump closure is the essential step of laparoscopic cholecystectomy. According to the present study’s results, silk sutures (intra-corporeal ligation) and locking clips (Hem-o-Lok®) are materials that can be used safely to close a cystic stump.

Hybrid Knot and Knotless Suture Anchor Repair for Patellar Tendon Rupture

Background: Patellar tendon ruptures are the third-most common injury involving the knee extensor mechanism. They typically occur in men under 40 years old as a result of eccentric quadriceps contraction while the knee is flexed and the foot is planted.1 The optimal treatment is surgical repair within 2 weeks of injury to prevent scar formation, degeneration, and loss of tendon excursion. Indications: Operative management is generally indicated for patellar tendon ruptures. In this case, a physically active, healthy 24-year-old man presented with acute pain, extensor lag, and patella alta related to a basketball injury. He was diagnosed with acute patellar tendon rupture/extensor mechanism disruption and indicated for surgery. Technique description: We describe a technique for primary patellar tendon repair which uses both knot-based and knotless suture anchor fixation. Using a pulley effect, sutures in the inferior patellar anchors are used to reduce and repair the patellar tendon back to its bony origin. Patellar anchor-based tapes and a suprapatellar traction suture are affixed with knotless anchors to the proximal tibia to reinforce the repair. Anchor-based suture limbs are used to repair the medial and lateral retinacula. Results: The senior authors’ experience with this technique has been excellent restoration of extensor mechanism function, with rehabilitation permitting early range of motion and no major complications or failures. This patient returned to unassisted activities of daily living between 8 and 12 weeks and had returned to gym workouts and recreational sports at 12 months. Discussion/conclusion: Biomechanical studies have demonstrated that compared with transosseous repair, suture anchor repair decreases gap formation and improves ultimate load to failure. Advantages of suture anchor repair include smaller incision, less tissue dissection, shorter operative time, and improved repair biomechanics. Our technique follows a principle of tendon repair using a high number of suture and tape limbs to span the repair. In addition, this technique incorporates a “double row” of suture anchors and spans the primary repair with a suture and tape “internal brace.” The author(s) attests that consent has been obtained from any patient(s) appearing in this publication. If the individual may be identifiable, the author(s) has included a statement of release or other written form of approval from the patient(s) with this submission for publication.