Zweig T, K Paya, W Rebhandl, E Horcher. Experiences in laparoscopic treatment of rare congenital disorders in newborn. 31. International Symposium of Pediatric Surgery, Obergurgel/Austria, Feb. 2002 (podium) Zweig T Spine Tango – Great efforts, what is the reward. 31. Congress, GIS (Societa Italiana di Chirurgia Vertebrale G.I.S) Milano, Italy, 22. – 24. May 2008 (invited lecture) Barz T, Reiger P, Staub L, Aghayev E, Roeder C, Zweig T, Theis J. The diagnostic value of a treadmill test in predicting lumbar spinal stenosis. Annual Meeting 2008, Spine Society of Australia (SSA), 18. – 20. April 2008 (best poster award) M Melloh, E Aghayev, L Staub, T Zweig, T Barz, P Rieger, JC Theis, C Roeder. Predicitive factors of physician-based outcomes after posterior lumbar fusion in the Spine Tango registry. Spineweek, Geneva, 26. – 31. Mai 2008 (podium) E Aghayev, M Melloh, L Staub, T Zweig, T Barz, P Rieger, JC Theis, C Roeder. Lumbar spinal stenosis: baseline characteristics, surgical measures and outocomes in the Spine Tango registry. Spineweek, Geneva, 26. – 31. Mai 2008 (podium) Sobottke R, Csécsei G   , Kaulhausen T, Delank KS, Aghayev E, Zweig T, Eysel P Eine umfassende Komplikationsanalyse der Therapie lumbaler Bandscheibenvorfälle 57. Jahrestagung NOV (Norddeutsche Orthopäden Vereinigung), Hamburg, 12. – 14. Juni 2008 (podium) Zweig T, E Schluessmann, LP Staub, E Aghayev, P Moulin, M Aebi, C Röder. Clinical results and influence of comorbidity in lumbar Total Disc Replacement measured in a mandatory registry – SWISSspine: 378 interventions – 439 Implants. SICOT/SIROT Triennial World Congress, Hong Kong, 24. – 28. Aug. 2008 (podium) T Zweig, E Schluessmann, LP Staub, E Aghayev, P Moulin, M Aebi, C Röder. Clinical results in cervical Total Disc Replacement (TDR )– 557 implants in a Swiss-spinal HTA registry. SICOT/SIROT Triennial World Congress, Hong Kong, 24. – 28. Aug. 2008 (podium) E Aghayev, M Melloh, T Zweig, L Staub, T Barz, P Rieger, JC Theis, C Roeder. Co-variates of referral for rehabilitation after posterior lumbar fusion. SICOT/SIROT Triennial World Congress, Hong Kong, 24. – 28. Aug. 2008 (podium) M Melloh, T Zweig, L Staub, E Aghayev, T Barz, P Rieger, JC Theis, C Roeder. The international spine registry Spine Tango – status quo and first results. SICOT/SIROT Triennial World Congress, 24. – 28. Aug. 2008 (podium) Melloh M, Zweig T, Rieger P, Staub L, Aghayev E, Roeder C, Theis JC, Barz T. The diagnostic value of a treadmill test in predicting lumbar spinal stenosis. SICOT/SIROT Triennial World Congress, Hong Kong, 24. – 28. Aug. 2008 (podium) Melloh M, Zweig T, Staub L, Aghayev E, Barz T, Rieger P, Theis JC, Roeder C. Predictive factors of physician-based outcomes after posterior lumbar fusion in the Spine Tango registry. SICOT/SIROT Triennial World Congress, Hong Kong, 24. – 28. Aug. 2008 (podium) Melloh M, Zweig T, Staub L, Aghayev E, Barz T, Rieger P, Theis JC, Roeder C. Predictors of dural tears in posterior spinal fusion. SICOT/SIROT Triennial World Congress, Hong Kong, 24. – 28. Aug. 2008 (podium) Melloh M, Zweig T, Staub L, Aghayev E, Barz T, Rieger P, Theis JC, Roeder C. Lumbar spinal stenosis: Baseline characteristics, surgical measures, and outcomes in the Spine Tango registry. SICOT/SIROT Triennial World Congress, Hong Kong, 24. – 28. Aug. 2008 (podium) Melloh M, Zweig T, Rieger P, Staub L, Aghayev E, Roeder C, Theis JC, Barz T. Comparison of cervical disc replacement and fusion of adjacent segments vs. disc replacement alone. SICOT/SIROT Triennial World Congress, Hong Kong, 24. – 28. Aug. 2008 (podium) Zweig T, Aghayev E, Melloh M, Moulin P, Aebi M, Röder C. Ergebnisse und Einfluss von Begleiterkrankungen beim lumbalen Bandscheibenersatz – 378 Patienten/Interventionen – 439 Segmente im SWISSspine Register. 68. Jahreskongress der SGO, Basel, 24.9 – 26. Sept. 2008 (podium) Diel P, Zweig T, Schluessmann E, Aghayev E, Moulin P, Aebi M, Roeder C. SWISSspine – The first nationwide HTA Registry in Switzerland: resluts of lumbar disc arthroplasty. 23. Annual Meeting NASS (North American Spine Society), Toronto, Ontario, Canada, 14. – 18. Okt. 2008 (podium) Zweig T, Aghayev E, Melloh M, Staub L, Theis JC, Aebi M, Röder C. Wertigkeit der lumbalen Spinalkanalstenose im internationalen Wirbelsäulenregister SPINE TANGO: Patientencharakteristika, Interventionen und Outcomes bei 1778 Patienten. DGOOC/DGU, Berlin, Germany, 22. – 25. Okt. 2008 (podium) Sobottke R, Csecsei G, Kaulhausen T, Zarghooni K, Delank S, Zweig T, Eysel P. Wirbesäulenchirurgie bei Patienten in höherem Lebensalter: Sind operative Eingriffe an der alternden Wirbelsäule komplikationsträchtig? DGOOC/DGU, 22. – 25. Okt. 2008 (podium) Zweig T Update Spine Tango 2008. Symposium Spine Tango at the DGOOC/DGU, Berlin, Germany, 22. – 25. Okt. 2008 (podium) Melloh M, Aghayev E, Zweig T, Barz T, Theis JC. Predictive factors of physician-based outcomes after posterior lumbar fusion. NZOA Annual Scientific Meeting, Hastings, NZ, 19. – 22. Oct. 2008 (podium) Melloh M, Roeder C, Zweig T, Barz T, Theis JC. Benchmarking in spinal surgery: An analysis from the International spine registry Spine Tango. NZOA Annual Scientific Meeting, Hastings, NZ, 19. – 22. Oct. 2008 (podium) Melloh M, Barz T, Aghayev E, Zweig T, Theis JC. Comparison of cervical disc replacement and fusion of adjacent segments vs. disc replacement alone. NZOA Annual Scientific Meeting, Hastings, NZ, 19. – 22. Oct. 2008 (podium) Melloh M, Staub L, Zweig T, Barz T, Theis JC. Co-variates of length of hospital stay in posterior spinal fusion. NZOA Annual Scientific Meeting, Hastings, NZ, 19. – 22. Oct. 2008 (podium) Zweig T, Aghayev E, Melloh M, Sobottke R, Domanja S, Moulin P, Aebi M, Röder C. Versorgung von 427 Patienten mit 497 lumbalen künstlichen Bandscheiben – Vergleich der 1-Jahres-Ergebnisse in Abhängigkeit vom Nukleus pulposus und dem Vorliegen oder Fehlen pseudoradikulärer Symptomatik. 3 rd  Annual Meeting of the German Spine Society (DWG), Ulm, Germany, 27 – 29 Nov. 2008 (podium) T. Zweig, P. Diel, E. Aghayev, M. Melloh, S. Domanja, P. Moulin, M. Aebi, C. Röder. Erste Ergebnisse eines nationalen prospektiven mulitzentrischen Pflichtregisters im Hinblick auf die Ballon-Kyphopolastie, 209 Behandlungen von 282 frakturierten osteoporotischen Wirbelkörpern. 3 rd   Annual Meeting of the German Spine Society (DWG), Ulm, 27 – 29 Nov. 2008 (poster) T. Zweig, D. Dietrich, P. Diel, E. Aghayev, M. Melloh, R. Sobottke, S. Domanja, C. Röder. Eine exemplarische Analyse der Komplikation Duraläsion in 7 Kliniken im Rahmen der Qualitätssicherung und des Benchmarking in der WS-Chirurgie. 3 rd  Annual Meeting of the German Spine Society (DWG), Ulm, Germany, 27 – 29 Nov. 2008 (poster) Sobottke R, Kaulhausen T, Röllinghoff M, Yagdiran, Zweig T, Delank S, Eysel P. Ergebnisse minimal-invasiver “stand alone” insterspinöser Spacer und der mikrochirurgischen Dekompression zur Behandlung der lumbalen Spinalkanalstenose. 3 rd  Annual Meeting of the German Spine Society (DWG), Ulm, Germany, 27 – 29 Nov. 2008 (podium) Zweig T, Aghayev E, Melloh M, Sobottke R, Aebi M, Röder C. A prospective cohort study of 497 lumbar TDR surgeries – comparison of 4 groups related to the status of the nucleus pulposus. American Academy of Orthopaedic Surgeons (AAOS) Annual Meeting, Las Vegas/NV, USA, 25-28 Feb. 2009 (podium) Zweig T, Aebi M. Wirbelsäulenregister der EuroSpine, Nutzen und Chancen für die Wirbelsäulen- und Alterschirurgie. 3. Alterstrauma-Kongress der DGU, Münster, 3-4 April 2009 (invited lecture) Zweig T Systematic and scientific assessment in spinal surgery. EuroSpine Cervical Course 2009, Liberec, CZ, 15-18 April 2009 (invited lecture) Melloh M, Lange J, Röder C, Zweig T, Theis JC, Barz T. Nerve Root Sedimentation Sign – A New Diagnostic Parameter in Lumbar Spinal Stenosis. Spine Society of Australia Annual Meeting, Brisbane, 17–19 April 2009 (podium) Melloh M, Aghayev E, Staub LP, Zweig T, Röder C, Barz T, Rieger PS, Theis JC. Predictive Factors of Physician-based Outcomes after Posterior Lumbar Fusion. Spine Society of Australia Annual Meeting, Brisbane, 17 – 19 April 2009 (podium) Melloh M, Staub LP, Röder C, Aghayev E, Zweig T, Barz T, Rieger PS, Theis JC. Co-variates of Length of Hospital Stay in Posterior Spinal Fusion. Spine Society of Australia Annual Meeting, Brisbane, 17 – 19 April 2009 (podium) C. Etter, T. Zweig, C. Röder, O. Schwarzenbach, E. Aghayev Benchmarking in the SWISSspine registry – Results of 44 Dynardi Lumbar Disc Prostheses compared to the Pooled Data. 9th Annual SAS Global Symposium on Motion Preservation Technology, 28 April-1 May 2009, London, England (poster) Zweig T Medical registries: A tool for clinical evaluation for medical devices Medical Device Clinical Congress (MDCC), Köln, 29 April 2009 (invited lecture) Zweig T, Aghayev E, Melloh M, Röder C. Physician- vs. patient based outcome after posterior lumbar fusion in the Spine Tango Registry. International Society for the Study of the Lumbar Spine (ISSLS) 36th Annual Meeting, Miami/Florida, USA, 4-8 May 2009 (podium) Zweig T, Aghayev E, Melloh M, Sobottke R, Galbusera F, Aebi M, Röder C. An analysis of the surgical treatment of lumbar spinal stenosis (LSS) – Procedures, outcomes, influential factors. International Society for the Study of the Lumbar Spine (ISSLS) 36th Annual Meeting, Miami/Florida, USA, 4-8 May 2009 (podium) Sobottke R, Csecsei G, Delank K, Eysel P, Aghayev E, Zweig T, Röder C. How risky is spinal surgery in the elderly? International Society for the Study of the Lumbar Spine (ISSLS) 36th Annual Meeting, Miami/Florida, USA, 4-8 May 2009 (podium) Zweig T, Aghayev E, Melloh M, Sobottke R, Galbusera F, Aebi M, Röder C. Predictors of dura lesions in posterior lumbar fusion – A study based on data of the International Spine Tango Registry. International Society for the Study of the Lumbar Spine (ISSLS) 36th Annual Meeting, Miami/Florida, USA, 4-8 May 2009 (special poster presentation) Zweig T, Aghayev E, Melloh M, Sobottke R, Aebi M, Röder C. A prospective cohort study of 371 patients treated with monosegmental lumbar total disc replacements: Outcome comparison of 4 groups with different status of nucleus pulposus and sciatica. International Society for the Study of the Lumbar Spine (ISSLS) 36th Annual Meeting, Miami/Florida, USA, 4-8 May 2009 (poster) Röder C, Schluessmann E, Aghayev E, Zweig T, Moulin P. The Swiss Spine Registry: A nationwide multicenter study for health technology assessment of lumbar disc prosthesis. International Society for the Study of the Lumbar Spine (ISSLS) 36th Annual Meeting, Miami/Florida, USA, 4-8 May 2009 (special poster presentation) Melloh M, Aghayev E, Staub L, Zweig T, Barz T, Theiss JC. Predictive factors for in physician based outcomes after posterior lumbar fusion. International Society for the Study of the Lumbar Spine (ISSLS) 36th Annual Meeting, Miami/Florida, USA, 4-8 May 2009 (poster) Melloh M, Staub L, Röder C, Aghayev E, Zweig T, Theis JC. Co-variates of length of hospital stay in posterior spinal fusion. International Society for the Study of the Lumbar Spine (ISSLS) 36th Annual Meeting, Miami/Florida, USA, 4-8 May 2009 (special poster presentation) Melloh M, Staub L, Röder C, Aghayev E, Zweig T, Theis JC. Benchmarking in spinal surgery. International Society for the Study of the Lumbar Spine (ISSLS) 36th Annual Meeting, Miami/Florida, USA, 4-8 May 2009 (poster) Melloh M, Staub L, Röder C, Aghayev E, Zweig T, Theis JC. Challenges in establishing an interantional spine registry. International Society for the Study of the Lumbar Spine (ISSLS) 36th Annual Meeting, Miami/Florida, USA, 4-8 May 2009 (special poster presentation) Zweig T, Aebi M, Aghayev E, Domanja S, Melloh M, Röder C. Predictors of dural tears in posterior spinal fusion in the lumbar spine - an analysis based on data of spine tango. EFORT, 10th Congress, Vienna, Austria, 3-6 June 2009 (podium) Zweig T, Aebi M, Aghayev E, Moulin P, Röder C. Comparison of outcomes in mono segmental lumbar Total Disc Replacement regarding preoperative nucleus pulposus status, herniated/non herniated and sciatica - data analysis of 358 patients from an observational multi center study, SWISSspine. EFORT, 10th Congress, Vienna, Austria, 3-6 June 2009 (podium) Aghayev E, Zweig T, Moulin P, Röder C. Clinical results and influence of comorbidity in lumbar Total Disc Replacement measured in a mandatory registry - SWISSspine: 427 interventions - 497 Implants. EFORT, 10th Congress, Vienna, Austria, 3-6 June 2009 (podium) Aghayev E, Zweig T, Aebi M, Aghayev E, Melloh M, Staub L, Röder C. Evaluative comparison of patient based versus physician based outcome in posterior lumbar fusion - an analysis based on the "Spine Tango" registry. EFORT, 10th Congress, Vienna, Austria, 3-6 June 2009 (podium) Aghayev E, Schluessmann E, Zweig T, Staub L, Aebi M, Roeder C. SWISSspine: governmentally mandated HTA-registry for total disc arthroplasty. Methodology and results of 825 cervical disc prostheses in 719 patients. EFORT, 10th Congress, Vienna, Austria, 3-6 June 2009 (e-poster) Zweig T, Aghayev E, Moulin P, Röder C Comparison of outcomes in mono segmental lumbar total disc replacement regarding preoperative nucleus pulposus status, herniated/non herniated and sciatica- data analysis of 358 patients from an observational multi center study. 69. Jahreskongress der SGO, Basel, 24–26 June 2009 (podium) Zweig T, Aghayev E, Melloh M, Sobottke R, Aebi M, Roeder C. Comparison of physician based vs patient based outcome after posterior lumbar fusion. EuroSpine 2009, Warsaw, Poland, 21-24 October 2009 (podium) Zweig T, Aghayev E, Melloh, Domanja S, Sobottke R, Aebi M, Roeder C. Predictors of dura lesions in posterior fusion of the lumbar spine - a study based on data of international „Spine Tango“ registry. EuroSpine 2009, Warsaw, Poland, 21-24 October 2009 (poster) Zweig T, Aghayev E, Sobottke R, Melloh M, Moulin P, Swiss S, Aebi M, Roeder C. Patients with disc hernia and/or radiculopathy have similar pain alleviation after lumbar total disc replacement than those with the classic indication. EuroSpine 2009, Warsaw, Poland, 21-24 October 2009 (special poster presentation) R. Sobottke, T. Zweig, C. Röder, P. Eysel, K.-S. Delank, E. Aghayev. Spinal surgery in the elderly: Risk of operative therapy for lumbar spinal stenosis (LSS) relative to patient age. 4th German Spine Conference, Annual Meeting of the German Spine Society, 10-12 December 2009, Munich, Germany (poster) T. Zweig, E. Aghayev, M. Melloh, R. Sobottke, M. Aebi, C. Röder Evaluative comparison of patient based versus physician based outcome in posterior lumbar fusion. 4th German Spine Conference, Annual Meeting of the German Spine Society, 10-12 December 2009, Munich, Germany (poster) T. Zweig, E. Aghayev, R. Sobottke, M. Melloh, M. Aebi, C. Röder. An analysis of the surgical treatment of lumbar spinal stenosis (LSS) – procedures, outcomes, influential factors – a prospective study of 1348 patients in a spine registry. 4th German Spine Conference, Annual Meeting of the German Spine Society, 10-12 December 2009, Munich, Germany (poster) Zweig T Spine Tango – function and contents of registry. Spine Tango Workshop at the Annual Meeting of the German Spine Society, 10 Dec. 2009, Munich, Germany (invited lecture) Zweig T, Aghayev E, Aebi M, Roeder C. Comparison of physician-based vs patient-based outcome after posterior lumbar fusion. AAOS 2010, New Orleans, USA, 9-13 March 2010 (poster) Zweig T How to Tango – more than an instruction. Annual Congress of VSOU, Baden-Baden, Germany, 2 May 2010 (invited lecture) R. Sobottke, E. Aghayev, C. Röder, P. Eysel, S. Delank, T. Zweig Risk for surgical, general and follow-up complications in lumbar spinal stenosis relative to patient age. 11 th  Congress EFORT, Madrid, Spain, 2-5 June 2010 (podium) J. Siewe, K. Glück, T. Kaulhausen, M. Röllinghoff, P. Eysel, T. Zweig, R. Sobottke. First clinical experiences with „topping off“. 11 th  Congress EFORT, Madrid, Spain, 2-5 June 2010 (poster) Zweig T, Aghayev M, Moulin P, Orler R, Aebi M, Röder C. 5 years of experience with the SWISSspine Registry. Update and midterm results of Lumbar Total Disc Arthroplasty (TDA). 70 th  annual meeting of the Swiss Orthopaedic Society (SGO), St. Gallen, Switzerland, 30 June – 2 July 2010 (podium) Zweig T Lumbar Total Disc Arthroplasty: 5 years of experience with a national mandatory registry. Swiss-Japanese Minisymposium on Disc and Spine Research, University of Zurich, Switzerland, 6 Sep. 2010 (podium) Zweig T TKA – 5,000.000 per year worldwide. Indication, Techinque, Outcome of Total Knee Arthroplasty. 2 nd  Orthopaedic Symposium, Spital Schwyz, Switzerland, 9 Sep. 2010 (podium) Zweig T Osteoarthritis of the Knee – Genesis and the conservative therapy of Knee-OA. 2 nd  Orthopaedic Symposium, Spital Schwyz, Switzerland, 9 Sep. 2010 (podium) Zweig T, Aghayev E, Moulin P, Orler R, Aebi M, Roeder C. 5 Years of Experience with a National Mandatory Registry: Midterm Results in 638 Patients with 734 Lumbar Total Disc Arthroplasties (TDA). EuroSpine 2010, Vienna, Austria, 15-17 Sep. 2010 (podium) Zweig T Pro Vertebroplasty. 4 th  Symposium for Internal Medicine, Spital Schwyz, Switzerland, 28 Oct. 2010 (invited, podium) Melloh M, Kessler JT, Zweig T, Aghayev E, Theis JC, Röder C. Development of a documentation instrument for the conservative treatment of spinal disorders and low back pain within the framework of an international spine registry. 7 th  Interdisciplinary World Congress on Low Back & Pelvic Pain, Los Angeles, 9- 12 Nov.2010 (podium) J. Siewe, K. Glück, C. Otto. C. Faymonville, P. Eysel, T. Zweig, R. Sobottke Topping off – Indications and Outcomes. 5th German Spine Conference, Annual Meeting of the German Spine Society, 11-12 Dec. 2010, Bremen, Germany (poster) Zweig T, Aghayev E, Melloh M, Röder C. Influence of preoperative leg pain and radiculopathy on outcomes in mono-segmental lumbar total disc replacement: results from a nationwide registry. 6 th  German Spine Conference, Annual Meeting of the German Spine Society (DWG), 8-10 Dec. 2011, Hamburg, Germany (podium) T. Zweig, YH Yau, BJC Freeman, M. Melloh, E. Aghayev, C. Röder Influence of previous conservative treatment interval on outcomes following decompressiv surgery for lumbar disc herniation. 24 th  Annual Scientific Meeting, Spine Society of Australia,19-21 Apr. 2013, Perth, Australia (podium) M. Melloh, A. Käser, T. Zweig, A. Elfering Relationship between depression and acute low back pain at first medical consultation, 3 and 6 weeks of primary care. 24 th  Annual Scientific Meeting, Spine Society of Australia,19-21 Apr. 2013, Perth, Australia (podium) T. Zweig, Y.H. Yau, BJC. Freeman, M. Melloh, E. Aghayev, C. Röder Influence of previous conservative treatment interval on outcomes following decompressive surgery for lumbar disc herniation EuroSpine 2013, Annual Meeting, 2-4 Oct. 2013, Liverpool, GB (podium) T. Zweig Orthopaedic Treatment of Spinal Metastasis, surgical vs. conservative Medical University Oncology and Haematology, KSA, Aarau, Switzerland, 28. Mar. 2014 (Invited lecture)

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