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  • 1
    Online Resource
    Online Resource
    Early Results of Irreversible Electroporation (IRE) for Tumor Ablation in Soft Tissue Tumors
    SAGE Publications ; 2018
    In:  The American Surgeon Vol. 84, No. 11 ( 2018-11), p. 445-447
    Details
    In: The American Surgeon, SAGE Publications, Vol. 84, No. 11 ( 2018-11), p. 445-447
    Type of Medium: Online Resource
    ISSN: 0003-1348 , 1555-9823
    URL: Article
    DOI: 10.1177/000313481808401103
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2018
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  • 2
    Online Resource
    Online Resource
    Identifying and Cultivating Superforecasters as a Method of Improving Probabilistic Predictions
    SAGE Publications ; 2015
    In:  Perspectives on Psychological Science Vol. 10, No. 3 ( 2015-05), p. 267-281
    Details
    In: Perspectives on Psychological Science, SAGE Publications, Vol. 10, No. 3 ( 2015-05), p. 267-281
    Abstract: Across a wide range of tasks, research has shown that people make poor probabilistic predictions of future events. Recently, the U.S. Intelligence Community sponsored a series of forecasting tournaments designed to explore the best strategies for generating accurate subjective probability estimates of geopolitical events. In this article, we describe the winning strategy: culling off top performers each year and assigning them into elite teams of superforecasters. Defying expectations of regression toward the mean 2 years in a row, superforecasters maintained high accuracy across hundreds of questions and a wide array of topics. We find support for four mutually reinforcing explanations of superforecaster performance: (a) cognitive abilities and styles, (b) task-specific skills, (c) motivation and commitment, and (d) enriched environments. These findings suggest that superforecasters are partly discovered and partly created—and that the high-performance incentives of tournaments highlight aspects of human judgment that would not come to light in laboratory paradigms focused on typical performance.
    Type of Medium: Online Resource
    ISSN: 1745-6916 , 1745-6924
    URL: Article
    DOI: 10.1177/1745691615577794
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2015
    detail.hit.zdb_id: 2224911-4
    SSG: 5,2
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    BTU Cottbus
    Wissenschaftspark Albert Einstein
    EUV Frankfurt
    TH Wildau
  • 3
    Online Resource
    Online Resource
    Applications of the Vascularized Medial Femoral Condyle for Nonunion with Associated Bone Loss of the Foot: A Case Series
    SAGE Publications ; 2019
    In:  Foot & Ankle Orthopaedics Vol. 4, No. 4 ( 2019-10-01), p. 2473011419S0029-
    Details
    In: Foot & Ankle Orthopaedics, SAGE Publications, Vol. 4, No. 4 ( 2019-10-01), p. 2473011419S0029-
    Abstract: Hindfoot, Midfoot/Forefoot Introduction/Purpose: Persistent nonunions with large bone defects continue to represent a challenging problem for foot and ankle surgeons. Vascularized corticocancellous grafts have been well described for various applications and represent a comprehensive solution to these difficult nonunion cases. We describe four cases of nonunions with concomitant large bony defects treated with a vascularized medial femoral condyle (VMFC). Methods: We retrospectively identified four cases of VMFC flaps used for foot nonunions with large bone defects. Surgical indications included talonavicular nonunion with associated avascular necrosis of the navicular, talonavicular-cuneiform nonunion, navicular-cuneiform nonunion, and first metatarsophalangeal nonunion. All cases had large associated segmental bone defects. The average age at the time of surgery was 62-years-old. The average follow up was 2.6 years (1.5-5.0). One patient had a remote history of tobacco use. Another patient quit smoking pre-operatively and had normal nicotine metabolite levels at the time of surgery. There was one Type II diabetic. Results: Two patients underwent staged reconstruction with placement of an antibiotic cement spacer, but intra-operative cultures were negative. No patient had a previous infection. The average graft dimensions were 3 x 2.25 x 1.5 cm. After obtaining adequate compression, all grafts were secured with bridge locking plates. The average time to weight bearing was 14.5 weeks. All patients had knee pain post-operatively that resolved with time. Two patients required reoperation. In one patient, the VMFC graft did not adequately fill the defect requiring supplement allograft. The VMFC-allograft interface went on to nonunion requiring tricortical iliac crest bone grafting. Another patient developed a split-thickness skin graft (STSG) infection requiring debridement and repeat STSG. There were no VMFC graft failures, and all patients went on to successful union. Conclusion: Vascularized medial femoral condyle autografts are a technically demanding solution to difficult nonunion cases with significant associated bone loss of the foot.
    Type of Medium: Online Resource
    ISSN: 2473-0114 , 2473-0114
    URL: Article
    DOI: 10.1177/2473011419S00292
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2019
    detail.hit.zdb_id: 2874570-X
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    BTU Cottbus
    Wissenschaftspark Albert Einstein
    EUV Frankfurt
    TH Wildau
    FH Potsdam
  • 4
    Online Resource
    Online Resource
    Buttress Plating versus Anterior-to-Posterior Lag Screws for Fixation of the Posterior Malleolus : A Biomechanical Study
    SAGE Publications ; 2016
    In:  Foot & Ankle Orthopaedics Vol. 1, No. 1 ( 2016-08-01), p. 2473011416S0014-
    Details
    In: Foot & Ankle Orthopaedics, SAGE Publications, Vol. 1, No. 1 ( 2016-08-01), p. 2473011416S0014-
    Abstract: Trauma Introduction/Purpose: The preferred method of fixation for posterior malleolus fractures remains controversial, and practices vary widely among surgeons. The purpose of this study was to compare anterior-to-posterior lag screws to posterior buttress plating for fixation of posterior malleolus fractures in a cadaveric model. Methods: Posterior malleolus fractures were created in seven pairs of fresh frozen cadaveric ankles. One specimen in each pair was randomly assigned to fixation with either two anterior-to-posterior lag screws or a one-third tubular buttress plate without supplemental lag screws. Each specimen was then subjected to cyclic loading from 0% to 50% of body weight for 5,000 cycles followed by loading to failure. Failure was defined as 1 mm of axial displacement. Results: The buttress plate group showed significantly less peak axial displacement at all time points during cyclic loading. Permanent axial displacement was significantly less in the buttress plate group beginning at cycle 200 (figure). There were no significant differences between the two groups during load to failure testing. Conclusion: Posterior malleolus fractures treated with posterior buttress plating showed significantly less displacement during cyclical loading compared to fractures fixed with anterior-to-posterior lag screws. Surgeons should consider these findings when selecting a fixation strategy for these common fractures. these biomechanical findings. Further research is warranted to investigate the clinical implications of
    Type of Medium: Online Resource
    ISSN: 2473-0114 , 2473-0114
    URL: Article
    DOI: 10.1177/2473011416S00141
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2016
    detail.hit.zdb_id: 2874570-X
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  • 5
    Online Resource
    Online Resource
    Lower Complication Rate Following Ankle Fracture Fixation by Orthopaedic Surgeons Versus Podiatrists
    SAGE Publications ; 2017
    In:  Foot & Ankle Orthopaedics Vol. 2, No. 3 ( 2017-09-01), p. 2473011417S0000-
    Details
    In: Foot & Ankle Orthopaedics, SAGE Publications, Vol. 2, No. 3 ( 2017-09-01), p. 2473011417S0000-
    Abstract: Ankle, Trauma Introduction/Purpose: Although the scope of practice for orthopaedic surgeons and podiatrists have considerable overlap in many foot and ankle pathologies, there are significant differences between the training for each surgical specialty that may affect patient outcomes. The purpose of this study was to evaluate complication rates following fixation of ankle fractures based on provider type. Our hypothesis was that patients with ankle fractures treated by orthopaedic surgeons would have lower complication rates compared to patients treated by podiatrists. Methods: This was a retrospective cohort study of data extracted from the Humana Claims database for 15,067 patients who underwent ankle fracture fixation between 2007 and 2015. Procedure type was identified by Current Procedural Terminology (CPT) codes. Patient data was subcategorized by surgeon type (orthopaedic surgeon versus podiatrist) and whether the patient underwent operative treatment for a single malleolus fracture (CPT 27766, 27792) versus a bimalleolar or a trimalleolar fracture (CPT 27814, 27822, 27823). The primary outcome was postoperative complications within 3 months including malunion, infection, or deep vein thrombosis (DVT). Secondary outcomes included reoperation rates for implant removal or irrigation and debridement. Complications were identified by International Classification of Disease-9 (ICD-9) codes and reoperations were identified by CPT codes. Chi-squared tests were used to determine differences in complication rates between surgeon types. The Charlson comorbidity index (CCI) was used to compare populations based on medical risk factors for complications. Results: 14,222 patients with ankle fractures were treated by orthopaedic surgeons and 845 patients were treated by podiatrists. Operative treatment by orthopaedists was associated with lower DVT (p 〈 0.02) and malunion (p 〈 0.02) rates among all types of ankle fractures. There were no differences in complications for patients with single malleolar fractures, although higher rates of implant removal (p 〈 0.01) were noted in patients treated by orthopaedic surgeons. For bimalleolar or trimalleolar fractures, treatment by an orthopaedic surgeon was associated with lower DVT (p 〈 0.03) and malunion (p 〈 0.04) rates. No differences were observed in rates of infection or need for irrigation and debridement based on surgeon type (Table 1). Patients treated by orthopaedic surgeons versus podiatrists were also noted to have a similar median CCI at 2.0 and 2.5, respectively. Conclusion: Operative treatment of ankle fractures by orthopaedic surgeons is associated with lower rates of certain postoperative complications compared with podiatrists. Malunion, in particular, is a surgeon related variable that has a significant impact on functional outcome in unstable ankle fracture patients. The specific reasons for the difference in malunion rates is likely multifactorial, and unable to be answered using this dataset, but warrants further investigation. Our findings have important implications for patients who must choose a surgeon to manage their operative ankle fracture, as well as policy makers who determine scope of practice in orthopaedic surgeons and podiatrists alike.
    Type of Medium: Online Resource
    ISSN: 2473-0114 , 2473-0114
    URL: Article
    DOI: 10.1177/2473011417S000031
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2017
    detail.hit.zdb_id: 2874570-X
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    BTU Cottbus
    Wissenschaftspark Albert Einstein
    EUV Frankfurt
    TH Wildau
    FH Potsdam
  • 6
    Online Resource
    Online Resource
    Complications and Outcomes of One-Bone Forearm Reconstruction
    SAGE Publications ; 2017
    In:  HAND Vol. 12, No. 2 ( 2017-03), p. 140-144
    Details
    In: HAND, SAGE Publications, Vol. 12, No. 2 ( 2017-03), p. 140-144
    Abstract: Background: The objective of this study was to review the outcomes of patients who underwent one-bone forearm (OBF) reconstruction. Methods: A retrospective review of patients who underwent OBF surgery between 1994 and 2014 was undertaken. Patient demographics, etiology, associated injuries, number of surgeries prior to OBF surgery, surgical details, and postoperative information were collected. A telephone interview was conducted at final follow-up, including a Quick Disabilities of the Arm, Shoulder and Hand (QuickDASH) questionnaire, a 10-point scoring system used by Peterson et al, and a series of questions concerning pain and patient satisfaction. Results: There were 6 males and 2 females with a mean age of 44 years (range, 20-66 years). All patients had traumatic etiology, with 6 having open wounds and 2 having closed wounds. All patients had union with a mean follow-up of 83.6 months (range, 16-218 months). The mean pain score was 3 (range, 0-8), of which 3 were painless (score 0). The mean QuickDASH score was 39 (range, 7-75), and 4 patients had good or excellent results according to the 10-point score system used by Peterson et al. All patients were satisfied with the result. Five of 8 had complications related to soft tissues that were residual from their prior injuries and surgeries. One patient had post healing fracture requiring revision fixation and 1 had a postoperative infection requiring parenteral antibiotics. Conclusions: OBF surgery is an effective salvage procedure for complicated forearm instability, particularly after trauma. While union rates are high, complications are typically related to pain and soft tissue secondary to the previous injury and reconstructive procedures.
    Type of Medium: Online Resource
    ISSN: 1558-9447 , 1558-9455
    URL: Article
    DOI: 10.1177/1558944716643305
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2017
    detail.hit.zdb_id: 2316440-2
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    BTU Cottbus
    Wissenschaftspark Albert Einstein
    EUV Frankfurt
    TH Wildau
    FH Potsdam
  • 7
    Online Resource
    Online Resource
    Venous Bridge Arterial Grafting for Thumb Replantation
    SAGE Publications ; 2017
    In:  HAND Vol. 12, No. 3 ( 2017-05), p. 272-276
    Details
    In: HAND, SAGE Publications, Vol. 12, No. 3 ( 2017-05), p. 272-276
    Abstract: Background: The purpose of this study is to describe a novel technique using an interposition vein graft for thumb replantation in these severe avulsion injuries. Methods: From 2002 to 2012, 8 patients underwent interposition venous bridge grafting from the dorsal radial artery at the anatomic snuffbox to the ulnar digital artery of the thumb. All patients had a traumatic thumb amputation with a severe injury to the ulnar digital artery. The technique began with bony stabilization; the radial artery at the anatomic snuffbox is exposed, vein graft harvested, and microsurgical end-to-side (proximally) and end-to-end (distally) anastomoses are carried out. Results: The average time to the operating room was 7.4 hours and time to reperfusion was 9.5 hours. At 3.1 years of follow-up, all 8 thumbs remained viable, without any need for revision procedures. The only complication was a metacarpal shaft nonunion treated successfully with iliac crest bone grafting. At last follow-up, all patients reported no or mild pain, with an average metacarpophalangeal (MCP) range of motion of 46.5°, and intact but diminished 2-point discrimination. All patients were able to return to work full-time. Conclusions: Due to the challenging nature of thumb avulsion injuries and the pronated position of the thumb, novel salvage alternatives are important. We describe a technique when no proximal vessels are available, using a vein to bridge the dorsal radial artery to the ulnar digital artery of the thumb. This novel arterial reconstruction has shown promise in thumb replantation associated with severe avulsion injuries.
    Type of Medium: Online Resource
    ISSN: 1558-9447 , 1558-9455
    URL: Article
    DOI: 10.1177/1558944716661997
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2017
    detail.hit.zdb_id: 2316440-2
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    Wissenschaftspark Albert Einstein
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    TH Wildau
    FH Potsdam
  • 8
    Online Resource
    Online Resource
    Bone Grafting for Scaphoid Nonunions: Is Free Vascularized Bone Grafting Superior for Scaphoid Nonunion?
    SAGE Publications ; 2019
    In:  HAND Vol. 14, No. 2 ( 2019-03), p. 217-222
    Details
    In: HAND, SAGE Publications, Vol. 14, No. 2 ( 2019-03), p. 217-222
    Abstract: Background: Nonvascularized bone grafting (NVBG) and vascularized bone grafts (VBGs) have been used to treat scaphoid nonunions. A comparison of a single institution’ s experience using structural iliac crest bone graft (ICBG), 1,2-intercompartmental supraretinacular artery (1,2-ICSRA), and medial femoral condyle (MFC) grafts to treat scaphoid nonunions was undertaken. Methods: Thirty-one patients underwent ICBG, 33 patients underwent 1,2-ICSRA, and 45 patients underwent MFC grafting. Mean time to follow-up was 16 months (range, 2-153). Twenty-three percent used tobacco products. Mean age was 24 years (range, 11-66), with 86% male patients. Outcomes included union rate, time to healing, range of motion, complications, and reoperations. Results: Union rates and mean time to union were 71% and 19 weeks for the ICBG group, 79% and 26 weeks for the 1,2-ICSRA group, and 89% and 16 weeks for the MFC group, respectively. Failure of union was associated with tobacco use but not with age, gender, time from injury to surgery, or type of fixation. There was no significant difference between the groups regarding range of motion or strength. Conclusions: These findings demonstrate the need for careful patient selection. In patients with the most complicated scaphoid nonunions (avascular necrosis, carpal collapse, and previous surgeries), the MFC group had the highest union rate and fastest time to union. Patients with risk factors for failure should be counseled on the outcomes and possible need for salvage fusion surgery.
    Type of Medium: Online Resource
    ISSN: 1558-9447 , 1558-9455
    URL: Article
    DOI: 10.1177/1558944717736397
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2019
    detail.hit.zdb_id: 2316440-2
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    BTU Cottbus
    Wissenschaftspark Albert Einstein
    EUV Frankfurt
    TH Wildau
    FH Potsdam
  • 9
    Online Resource
    Online Resource
    Risk Factors for Complications of Open Trigger Finger Release
    SAGE Publications ; 2015
    In:  HAND Vol. 10, No. 2 ( 2015-06), p. 297-300
    Details
    In: HAND, SAGE Publications, Vol. 10, No. 2 ( 2015-06), p. 297-300
    Abstract: Open trigger finger release is generally considered a simple low-risk procedure. Reported complication rates vary widely from 1 to 43 %, mostly based on small studies. Our goal was to determine the incidence of complications in a large consecutive series, while also identifying potential risk factors. Methods All open trigger finger releases performed from 2006 to 2009 by four fellowship-trained hand surgeons at a single institution were retrospectively reviewed. There were 795 digits released in 543 patients. Complications were defined as signs or symptoms requiring further treatment and/or considered unresolved by 1 month postoperatively. Complications requiring operative intervention were regarded as major. Multivariable analysis was performed to determine possible risk factors for complications. Results There were 95 documented complications among 795 digits (12 %). The most common complications involved persistent pain, stiffness, or swelling, persistent or recurrent triggering, or superficial infection. Most were treated nonoperatively with observation, therapy, steroid injection, or oral antibiotics. There were 19 reoperations (2.4 %), mostly including revision release, tenosynovectomy, and irrigation and debridement. Male gender, sedation, and general anesthesia were independently associated with complications, while age, diabetes, hypothyroidism, recent injection, and concurrent procedures were not associated. Conclusions Open trigger finger release is generally a low-risk procedure, although there is potential for complications, some requiring reoperation. Male gender, sedation, and general anesthesia may be associated with greater risk. Surgeons should be careful to thoroughly discuss the risk of both major and minor complications when counseling patients.
    Type of Medium: Online Resource
    ISSN: 1558-9447 , 1558-9455
    URL: Article
    DOI: 10.1007/s11552-014-9716-9
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2015
    detail.hit.zdb_id: 2316440-2
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    Wissenschaftspark Albert Einstein
    EUV Frankfurt
    TH Wildau
    FH Potsdam
  • 10
    Online Resource
    Online Resource
    Public perceptions of pharmacist expanded scope of practice services in Nova Scotia
    SAGE Publications ; 2015
    In:  Canadian Pharmacists Journal / Revue des Pharmaciens du Canada Vol. 148, No. 5 ( 2015-09), p. 274-283
    Details
    In: Canadian Pharmacists Journal / Revue des Pharmaciens du Canada, SAGE Publications, Vol. 148, No. 5 ( 2015-09), p. 274-283
    Abstract: Community pharmacists have been transitioning from traditional dispensing roles toward a much broader scope of practice. The objective of this research was to explore public perceptions of expanded scope of practice (ESOP) services as they relate to pharmacy and pharmacist characteristics. Methods: The Survey on New Services Offered by Nova Scotia Pharmacists was developed and deployed using in-pharmacy intercept surveys and online public surveys in Nova Scotia. The survey focused on 4 key ESOP elements/services: 1) prescribing for minor ailments (ambulatory conditions), 2) injections and vaccinations, 3) prescription renewals and 4) medication reviews. Data were analyzed using comparisons between groups (multivariate analysis of variance) and principal component analysis. Results: A total of 385 surveys were obtained from the public regarding their perceptions and use of ESOP services (online n = 237, in-pharmacy intercept n = 148). A number of significant differences were found on the basis of respondent sex, age and the location of survey deployment. Discussion: Overall, public perceptions of pharmacists’ knowledge and skills in providing ESOP services are positive. A pharmacist’s ability to communicate, protect confidentiality and provide quality information regarding medications is important to the public. Conclusion: Respondents who already have a good relationship with their pharmacist are more likely to see value in ESOP services. Future public education strategies should focus on factors positively affecting the public’s perceptions of ESOP services and should encourage public use of these services through intentional patient education of the benefits of ESOP services and strengthening of the patient-provider relationship.
    Type of Medium: Online Resource
    ISSN: 1715-1635 , 1913-701X
    URL: Article
    DOI: 10.1177/1715163515596757
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2015
    detail.hit.zdb_id: 2588715-4
    SSG: 15,3
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    FH Potsdam
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