bluuebunny/crossref_metadata_2025_split huggingface dataset:
The use of an Ossis custom 3D-printed tri-flanged acetabular implant for major bone loss: minimum 2-year follow-up
Authors: Kieser David C , Ailabouni Ramez , Kieser Sandra C J , Wyatt Michael C , Armour Paul C , Coates Mark H , Hooper Gary J 
Published: May 2018

Introduction: Custom 3D-printed acetabular implants are a new technology used in hip surgery with ever-increasing frequency. They offer patient-specific implants to optimise filling of bone defects and implant-bone contact, without the need for excessive bone resection. Methods: This is a retrospective cohort study of 46 consecutive patients who underwent an Ossis unilateral custom 3D-printed acetabular implant. Clinical (Oxford Hip Score OHS-60), Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC), Harris Hip Score (HHS) and radiological (restoration of biomechanical hip centre, osteointegration, wear, heterotrophic ossification) results were assessed. Results: Patient mean age was 68 years and follow-up was 38 months (minimum 24 months). 10 patients were excluded from the outcome analysis; 2 patients died, 1 required revision for deep infection and 7 were lost to follow-up. Of the 36 patients included, 21 had severe osteolysis. 7 were revised for infection, 3 for tumoural defects, 3 for metallosis, 1 for dysplasia and 1 for trauma (Paprosky 2a [n=6], 2b [n=2], 2c [n=5], 3a [n=6], 3b [n=11], pelvic dissociation [n=6]). OHS significantly improved postoperatively (16-8-48.4 p=0.027). Postoperative functional scores were good (WOMAC 98; HHS 79). The biomechanical hip centre was restored in all patients. 1 patient had early implant migration with subsequent stabilisation. 2 patients had radiographs concerning for failure of osteointegration. 1 patient had recurrent dislocations. Conclusions: The mid-term results of the Ossis custom 3D-printed tri-flanged acetabular implant for the management of severe acetabular defects are encouraging. The improvement in functional scores and radiographic outcomes are comparable to similar designs. In addition, no cases have required revision for aseptic loosening.
Patient positioning and cup orientation during total hip arthroplasty: assessment of current UK practice
Authors: Rutherford Megan , O’Connor John D , Hill Janet C , Beverland David E , Lennon Alex B , Dunne Nicholas J 
Published: May 2018

Introduction: Acetabular cup orientation during total hip arthroplasty (THA) remains a challenge. This is influenced by patient positioning during surgery and the method used to orientate the acetabular cup. The aim of this study was to assess current UK practice for patient positioning and cup orientation, particularly with respect to patient supports and techniques used to achieve target version and inclination. Methods: A literature review and pilot study were initially conducted to develop the questionnaire, which was completed by British Hip Society members ( n = 183). As the majority of THA surgical procedures within the UK are performed with the patient in lateral decubitus, orthopaedic surgeons who operated with the patient in the supine position were excluded ( n = 18); a further 6% were incomplete and also excluded ( n = 11). Results: Of those who operated in lateral decubitus, 76.6% ( n = 118/154) used the posterior approach. Only 31% ( n = 47/154) considered their supports to be completely rigid. More than 35% ( n = 55/154) were unhappy with the supports that they presently use. The most common methods for controlling operative inclination and version were a mechanical alignment guide (MAG; n = 78/154; 50.6%) and the transverse acetabular ligament (TAL; n = 82/154; 53.2%); 31.2% (48/154) used a freehand technique to control operative inclination. Conclusion: Limited studies have been conducted whereby patient supports have been analysed and key design principles outlined. With 35.7% of the orthopaedic surgeons surveyed having issues with their current supports, a greater awareness of essential characteristics for patient supports is required.
Early application of an intermittent pneumatic compression device is safe and results in proximal arteriovenous fistula enlargement
Authors: Desai Sanjay , Mitra Amit , Arkans Ed , Singh Tej M 
Published: May 2018

Introduction: Delays in arteriovenous fistula maturation can cause care delays and increased costs. Increased distention pressure and intermittent wall shear stress may dilate veins based on prior research. Early use of non-invasive devices may help assist clinical arteriovenous fistula dilation. Methods: This was an Institutional Review Board approved study. After arteriovenous fistula creation, a novel, intermittent pneumatic compression device (Fist Assist®) was applied 15 cm proximal to arteriovenous fistula enabling 60 mmHg of cyclic compression for 6 h daily for 30 days. Among the patients who completed 1 month follow-up, 30 (n = 30) arteriovenous fistula patients were in the study arm to test vein dilation with Fist Assist. Controls (n = 16) used a sham device. Vein size was measured and recorded at baseline and after 30 days by duplex measurement. Clinical results (percentage increase) were recorded and tested for significance. Results: No patients experienced thrombosis or adverse effects. Patient compliance and satisfaction was high. After 1 month, the mean percentage increase in vein diameter in the Fist Assist treatment group was significantly larger (p = 0.026) than controls in the first 5 mm segment of the fistula after the anastomosis. All fistulas treated with Fist Assist are still functional with no reported thrombosis or extravasations. Conclusions: Early application of an intermittent pneumatic compression device may assist in arteriovenous fistula dilation and are safe. Non-invasive devices like Fist Assist may have clinical utility to help fistulae development and decrease costs as they may eventually assist maturation.
Safety and efficacy of a new outreach distal access catheter, TACTICS, for coil embolization of unruptured intracranial aneurysms
Authors: Matsushige Toshinori , Sakamoto Shigeyuki , Ishii Daizo , Shinagawa Katsuhiro , Shimonaga Koji , Hosogai Masahiro , Kawasumi Tomohiro , Oshita Junpei , Okazaki Takahito , Kurisu Kaoru 
Published: May 2018

Background and purpose Current large-bore catheters can be easily and safely placed in the intracranial vessels for the stabilization of microcatheters in several neurointervention scenarios. We considered that a novel 3.4 French catheter (TACTICS, Technorat Corporation, Aichi, Japan) might be useful for intermediate/distal access in a triaxial system. Here, we present our initial experience using the TACTICS catheter for treatment of intracranial aneurysms. Materials and methods A total of 35 endovascular coils were placed to embolize unruptured intracranial aneurysms of the anterior circulation using the TACTICS catheter between December 2016 and November 2017. These procedures were retrospectively reviewed to assess aneurysmal obliteration (Raymond’s classification), the volume embolization ratio (VER) and procedural complications in comparison with 96 conventional coil treatments during the 3-year period up to 2016. Data were matched for aneurysmal morphology (location, maximum diameter and aspect ratio) by the propensity method. Results In all procedures, the TACTICS catheter was atraumatically landed beyond the carotid siphon. There were no hemorrhagic or symptomatic ischemic complications. After propensity matching, 68 procedures were assessed (34 in each group). Achievement of Raymond’s scale 1 (complete occlusion) showed the same frequency in both groups (50% vs. 50%, p = 0.23). The VER was significantly higher with the TACTICS catheter than with the conventional method (34.0% vs. 28.7%, p = 0.003). Conclusion We reviewed our initial experience of the TACTICS catheter. It can be used as an intermediate catheter for safe and effective endovascular coil embolization of anterior circulation aneurysms.
A Collet–Sicard syndrome due to internal carotid artery dissection associated with cerebral amyloid angiopathy–related inflammation
Authors: Saliou Vanessa , Ben Salem Douraied , Ognard Julien , Guellec Dewi , Marcorelles Pascale , Rouhart François , Zagnoli Fabien , Timsit Serge 
Published: May 2018

Background: Cerebral amyloid angiopathy–related inflammation is a rare condition with approximately 100 reported cases. Its clinical manifestations are varied. We report here a novel presentation of this disease. Case presentation: A 61-year-old Caucasian man presented with rapidly progressive paralysis of the IX, X, XI and XII right cranial nerves associated with right central facial nerve palsy. Brain computed tomography angiography and cerebral catheter angiography found a focal fusiform enlargement of the distal cervical portion of the right internal carotid artery, related to a pseudo-aneurysm suggesting an evolution of a dissection and intra-cranial vessel dysplasia. Brain magnetic resonance imaging showed multiple asymmetrical subcortical regions of hyperintensity on T2 fluid-attenuated inversion recovery sequences. Punctiform cortical hyposignals on T2-weighted gradient echo magnetic resonance imaging sequences were mostly congruent with the white matter hyperintensities. There was a decreased cerebral perfusion at the frontal hyperintense fluid-attenuated inversion recovery region. Spectrometry identified a lactate–lipid peak. A brain biopsy showed intravascular amyloid deposits. Corticosteroid therapy was initiated, leading to a dramatic improvement of both clinical condition and magnetic resonance imaging brain lesions. Conclusion: This case report suggests that extra-cranial vasculitis and dysplasia can exceptionally be found in patients satisfying cerebral amyloid angiopathy–related inflammation criteria.
Overview of Self-Management Resources Used by Canadian Chronic Kidney Disease Clinics: A National Survey
Authors: Donald Maoliosa , Gil Sarah , Kahlon Bhavneet , Beanlands Heather , Straus Sharon , Herrington Gwen , Manns Braden , Hemmelgarn Brenda R. 
Published: May 2018

Background: Chronic kidney disease (CKD) clinics across Canada provide tailored care for patients with CKD with an aim to slow progression and prevent complications. These clinics provide CKD self-management resources; however, there is limited information about what resources are being used by clinics. We undertook a survey of CKD clinics across Canada to identify self-management resources for adults aged 18 years and over with CKD categories 1 to 5 and not requiring dialysis or transplant. Objective: To identify and collate self-management resources (eg, strategies, tools, educational materials) used by CKD clinics across Canada for adults with CKD (categories 1 to 5, not requiring kidney replacement therapy). Design: Self-administered, semistructured electronic survey. Setting, participants: Canadian CKD clinics with previously identified contact information. Methods and measurements: We contacted 57 CKD English-speaking clinics and invited them to complete an online survey. The survey was available from October 2016 to January 2017 and consisted of 17 questions regarding the use and attributes of self-management resources including topic, delivery format, provider, target population, where the intervention was provided, and resource languages. Results: Forty-four clinics (77%) completed the survey. The most common topic was modality education provided in print format, by nurses. The most frequently used resource was the Kidney Foundation of Canada (KFOC) Living With Kidney Disease manual. We also identified that the majority of resources were available in English, targeting both patients and caregivers in the outpatient setting. Limitations: Our survey included Canadian adult CKD clinics, which may not be generalizability to other settings, such as care of people with CKD in primary care. Conclusions: Adult CKD clinics across Canada provide some similar resources, but also provide many different self-management resources. Even though some of the same resources were used by multiple clinics, the way they were provided them (ie, provider, location, delivery format) varied by the individual clinics. Knowledge of self-management resources currently provided in CKD clinics, along with synthesis of the literature and patient preferred self-management strategies, will inform the design and development of a novel self-management intervention that is patient-centric and adheres to the principles of self-management.
Software-Based Postoperative Communication With Patients Undergoing Spine Surgery
Authors: Goz Vadim , Anthony Christopher , Pugely Andrew , Lawrence Brandon , Spina Nicholas , Brodke Darrel , Spiker William Ryan 
Published: May 2018

Study Design: Observational study. Objectives: Perioperative patient anxiety is a major concern in orthopedic surgery. Mobile messaging applications have been used in a number of healthcare settings. The goal of this project is to develop a novel mobile messaging application aimed at decreasing perioperative patient anxiety in spine surgery patients. Methods: Postoperative recovery journals were collected from patients undergoing spine surgery. Journals were used as a framework to develop a software-messaging library. A subsequent cohort of patients received daily text messages with educational material regarding their recovery for 14 days after discharge from their operative admission. Patients ranked the usefulness of the survey on day 14; further feedback was obtained via interviews. Results: Nineteen postoperative recovery journals were collected and analyzed. Content regarding postoperative recovery was compiled. The pilot group consisted of 21 patients. Average rating of the application on a 1 to 5 scale with 5 being “very useful” was 4.57. Of the 12 patients available for postoperative interviews, 11 felt the content of the messages was relevant. Nine of 12 patients felt the application made it less likely for them to call clinic. Conclusions: The study presents a unique mobile phone messaging tool to offer patients support in the 2 weeks following spine surgery. The tool was felt to be useful by nearly all patients, had a high degree of patient engagement, and made the majority of patients less likely to call clinic.
Undergraduate Plastic Surgery Education: A National Survey of Clerkship Directors
Authors: Morzycki Alexander , LeBlanc Martin , Williams Jason 
Published: May 2018

Background: The delivery of medical education has received increased attention in recent years due to ongoing time and financial constraints faced by medical educators. Given the recent calls to action by the Carnegie Foundation and Health Canada, an evaluation of the specialty education sector is warranted. To our knowledge, this is the first assessment of the Canadian plastic surgery undergraduate clerkship curriculum. Method: An anonymous electronic survey was distributed to the plastic surgery clerkship directors of all Canadian medical schools (N = 17). The survey consisted of Likert scales and open-ended short answer questions. Themes included general clerkship information, exposure characteristics, teaching characteristics, resource characteristics, and challenges and barriers faced by clerkship directors. Results: Survey response rate was 88%. All responding schools offered a clerkship rotation of varying length in time (1-4 weeks). Students had the most exposure to breast surgery (100%) and general plastic surgery (100%) and the least exposure to aesthetic surgery (40%). Sixty percent of schools indicated the use of modern educational methods. Resources available for teaching students varied. Rotations received excellent feedback from medical students (67%). More than half of respondents would like to see a universal, nationally formulated plastic surgery clerkship curriculum. Conclusion: There is significant heterogeneity in the delivery of plastic surgery clerkship in Canada. A number of areas for improvement have been identified. We hope to establish a national plastic surgery clerkship task force to address the concerns raised here and improve the delivery of undergraduate medical education. Assessment of students based on a national curriculum may help in decision-making regarding plastic surgery program admissions by introducing an element of standardization to clerkship exposure.
Innervation of the Flexor Digitorum Profundus: A Systematic Review
Authors: Hwang Kun , Bang Seung Jun , Chung Sook Hyun 
Published: May 2018

Purpose: The aim of this study was to review the innervation of the flexor digitorum profundus (FDP). Methods: In PubMed and Scopus, terms (Flexor digitorum profundus OR FDP) AND (innervation OR nerve) were used, resulting in 233 and 281 papers, respectively. After excluding 142 duplicates, 73 abstracts were reviewed. Forty-seven abstracts were excluded, 26 full papers were reviewed, and 17 papers were analyzed. Results: In most cases (97.6%), the index FDP was innervated by the anterior interosseous nerve (AIN). Dual innervation from the AIN and ulnar nerve (UN) was observed in 2.4% of papers. In majority (76.8%), the middle FDP received dual innervation from the AIN and the UN. The rest was innervated by the AIN only (22.0%) or the UN only (1.2%). In most cases (85.4%), the ring FDP was innervated by the UN only. The rest (14.6%) received dual innervation from the AIN and the UN. In majority of cases (64.6%), the little FDP was innervated by the UN only. The rest (35.4%) received dual innervation from the AIN and the UN. The AIN entered the FDP at 107.63 (8.80) mm from the elbow, corresponding to 26.75% (2.17%) of the forearm length, measured proximally. The average number of AIN branches to the FDP was 2.27 (1.33). The average number of UN branches to the FDP was 1.37 (0.94). In 8.8% of limbs, a communicating branch supplied the FDP. Among the limbs with a communicating branch, 32.3% had branches supplying the FDP. Conclusion: The results of this study may be useful in managing nerve injury patients.
One Versus 2 Venous Anastomoses in Free Flap Surgery: A Systematic Review and Meta-Analysis
Authors: Matthews Jennifer L. K. , Alolabi Noor , Farrokhyar Forough , Voineskos Sophocles H. 
Published: May 2018

Background: The necessity of a second venous anastomosis in free flap surgery is controversial. The purpose of this systematic review is to determine whether venous flap failure and reoperation rates are lower when 2 venous anastomoses are performed. The secondary objective is to determine whether venous flap failure and reoperation rates are lower when the 2 veins are from 2 different drainage systems. Methods: A comprehensive search of the literature identified relevant studies. Investigators independently extracted data on rates of flap failure and reoperation secondary to venous congestion. A meta-analysis was performed; odds ratios (ORs) were pooled using a random-effects model and 95% confidence intervals (CIs). Results: Of 18 190 studies identified, 15 were included for analysis. The mean sample size was 287 patients (minimum = 102, maximum = 564). No statistically significant difference in venous flap failure was found when comparing 1 versus 2 venous anastomoses (OR: 1.35; 95% CI: 0.46-3.93). A significant decrease in reoperation rate due to venous congestion was shown (OR: 3.03; 95% CI: 1.64-5.58). The results favor using 2 veins from 2 different systems over veins from the same system (OR: 0.16; 95% CI: 0.02-1.27). Conclusions: There is low-quality evidence suggesting that the use of 2 venous anastomoses will lower the rate of reoperation due to venous congestion. There are insufficient data published to meaningfully compare outcomes of flaps with 2 venous anastomoses from different systems to flaps with anastomoses from the same system.
Glenohumeral Internal Rotation Deficit and Injuries: A Systematic Review and Meta-analysis
Authors: Johnson Jordan E. , Fullmer Joshua A. , Nielsen Chaseton M. , Johnson Joshua K. , Moorman Claude T. 
Published: May 2018

Background: There is an association between throwing activity and glenohumeral internal rotation deficit (GIRD). An 18° to 20° deficit has been adopted as the standard definition of pathological GIRD, but specific findings as to how GIRD relates to an injury are inconsistent. Purpose: To systematically review the literature to clarify the definition of GIRD diagnosis for adolescent and adult overhead athletes and to examine the association between GIRD and an increased risk of injuries in these athletes. Study Design: Systematic review; Level of evidence, 4. Methods: A systematic review of the literature was performed. Observational studies comparing glenohumeral internal rotation range of motion (ROM) in injured and uninjured overhead athletes were included for the meta-analysis. Studies of adolescent and adult athletes were analyzed separately. ROM was compared for the injured and uninjured groups, and a weighted mean GIRD was estimated. To account for potential heterogeneity across studies, both fixed- and random-effects models were used to calculate a standardized mean difference (SMD). Results: Nine studies of level 3 or 4 evidence were included. From these, 12 study groups (4 adolescent, 8 adult) comprising 819 overhead athletes (226 injured, 593 uninjured) were included in the meta-analysis. The estimated SMD in GIRD between the injured and uninjured groups was 0.46 (95% CI, 0.15-0.77; P < .01) for the overall sample. The between-group effect was larger for adults (SMD, 0.60 [95% CI, 0.18 to 1.02]; P < .01) than adolescents (SMD, 0.20 [95% CI, –0.24 to 0.63]; P = .13). The weighted mean GIRD for the injured and uninjured groups was 13.8° ± 5.6° and 9.6° ± 3.0°, respectively, which also differed by age group. Moderate study heterogeneity was observed ( I2 = 69.0%). Conclusion: Based on this systematic review, the current definition of pathological GIRD may be too conservative, and a distinct definition may be required for adolescent and adult athletes. While the results indicate a link between internal rotation deficits and upper extremity injuries in the overhead athlete, higher quality prospective research is needed to clarify the role that GIRD plays in future injuries to overhead athletes of various ages.