Very different worldwide professions, general surgeons, orthopaedic surgeons and more specialized surgeons work together or not, having borderlines at very different levels or even no borderlines in practicing. For some questions you might find an answer in the surgeons chapter. You may search for subspecialties at the national websites, like for foot and ankle, knee, hip, shoulder and elbow, spine, paediatric, osteoporosis, sports medicine and others. You will find subspecialization very differently organized in different countries. 

Laypersons/Patients: Use the information button or the doctor finder

ISOC International Society of Orthopaedic Centers
  SICOT International Society of Orthopaedic Surgery and Traumatology 
  SIS Spine Intervention Society
AFRICA AOA African Orthopaedic Association (disbanded)
EGYPT EOA Egyptian Orthopaedic Association
MAROCCO SMACOT Société Marocaine de Chirurgie Orthopédique et Traumatologie
SOUTH AFRICA SAOA South African Othopaedic Association
AMERICA ARGENTINA AAOT Asociación Argentina de Ortopedia y Traumatología
ACARO Asociación Argentina para el Estudio de la Cadera y la Rodilla
BRASILIA SBOT Sociedade Brasileira de Ortopedia e Traumatologia
SBOT-SP Sociedade Brasileira de Ortopedia e Traumatologia – Regional São Paulo
CANADA COA Canadian Orthopaedic Association
CHILE SCHOT Sociedad Chilena de Ortopedia y Traumatologia
COLOMBIA SCCOT Sociedad Colombiana de Cirugía Ortopédica y Traumatología
ECUADOR SEOT Sociedad Ecuatoriana de Ortopedia y Traumatologia
LATIN AMERICA SLAOT Sociedad Latinoamericana d´Ortopedia y Traumatologia
MEXICO CMO Colegio Mexicano de Ortopedia y Traumatología
FEMECOT Federación Mexicana de Colegios de Ortopedia y Traumatología, A.C.
PARAGUAY SPOT Sociedad Paraguaya de Ortopedia y Traumatologia
PERU SPOTRAUMA Sociedad Peruana de Ortopedia y Traumatología
PUERTO RICO SPOT Sociedad Puertoriquena de Ortopedia y Traumatologia
URUGUAY SOTU Sociedad de Ortopedia y Traumatología del Uruguay
USA AAHKS American Association of Hip and Knee Surgeons
  AAOS American Academy of Orthopaedic Surgeons
  AAOM American Association of Orthopaedic Medicine
  AOA American Orthopaedic Association
ASSH American Society for Surgery of the Hand
  AOSSM American Orthopaedic Society for Sports Medicine
  AOFAS American Orthopaedic Foot and Ankle Society
ASES American Shoulder And Elbow Surgeons
ASOP The American Society of Orthopedic Professionals
LLRS Limb Lengthening and Reconstruction Society 
  ORS Orthopedic Research Society
OTA Orthopaedic Trauma Association
POSNA Pediatric Orthopaedic Society of North America
SRS Scoliosis Research Society
VENEZUELA SVCOT Sociedad Venezolana de Cirugía Ortopédica y Traumatología
ASIA ASOA Asean Orthopaedic Association
APOA Asia Pacific Orthopaedic Association
APSS Asia Pacific Spine Society
CHINA COA Chinese Orthopedic Association
HONG KONG HKOA Hong Kong Orthopaedic Association
INDIA IOA Indian Orthopaedic Association
INDONESIA IOA Indonesian Orthopaedic Association
IRAN IOA Iranian Orthopaedic Association
ISRAEL IOA Israel Orthopaedic Association
JAPAN JOA Japanese Orthopaedic Association
MALAYSIA MOA Malaysian Orthopaedic Association
MYANMAR MOS Myanmar Orthopaedic Society
PAKISTAN POA Pakistan Orthopaedic Association
SAUDI ARABIA SOA Saudi Orthopaedic Association
SINGAPORE SOA Singapore Orthopaedic Association
SOUTH KOREA KOA The Korean Orthopaedic Association
TAIWAN TOA Taiwan Orthopaedic Association
THAILAND RCOST The Royal College of Orthopaedic Surgeons of Thailand (RCOST) and Thai Orthopaedic Association (TOA)
TURKEY TOTBID Türk Ortopedi ve Travmatoloji Birligi Dernegi
AUSTRALIA AOA Australian Orthopaedic Association
NZOA New Zealand Orthopaedics Association
EUROPE EFORT European Federation of National Associations of Orthopaedics and Traumatology
EORS European Orthopaedic Research Society
ESSKA European Society for Sports Traumatology, Knee Surgery & Arthroscopy
EUROSPINE EUROSPINE, the Spine Society of Europe
BELGIUM BVOT Belgische Vereniging voor Ortopedie en Traumatologie
SORBCOT Societe Royale Belge de Chirurgie Orthopedique et de Traumatologie
OTSABH Orthopaedic and Traumatology Surgeons Association of Bosnia and Herzegovina
BULGARIA BOTA Bulgarian Orthopedics and Traumatology Association
DANMARK DOS Dansk Ortopædisk Selskab
FINLAND SOY Suomen Ortopediyhdistys Ry
FRANCE SOFCOT Société Francaise de Chirurgie Orthopédique et Traumatologie
  GERMANY AE Deutsche Gesellschaft für Endoprothetik (Arbeitsgemeinschaft Endoprothetik GmbH, section of DGOU)
BVOU Berufsverband für Orthopädie und Unfallchirurgie
DGOOC Deutsche Gesellschaft für Orthopädie und Orthopädische Chirurgie
DGOU Deutsche Gesellschaft für Orthopädie und Unfallchirurgie
DVSE Deutsche Vereinigung für Schulter- und Ellenbogenchirurgie e. V.
EPRD Endoprothesenregister Deutschland
GREECE EEXOT Ελληνική Εταιρεία Χειρουργικής Ορθοπαιδικής και Τραυματολογίας
HUNGARY MOT Magyar Ortopéd Társaság
IRELAND IOA Irish Orthopaedic Association
ITALIA SIOT Società Italiana di Ortopedia e Traumatologia
LITHUANIA LTOD Lithuanian Society of Orthopedics and Traumatology
NETHERLANDS NOV Nederlandse Orthopaedische Vereniging
NORWAY NOF Norsk Ortopedisk Forening
ÖSTERREICH ÖGOOC Österreichische Gesellschaft für Orthopädie und orthopädische Chirurgie
POLAND PTOiTr Polskie Towarzystwo Ortopedyczne i Traumatologiczne
PORTUGAL SPOT Sociedade Portuguesa de Ortopedia e Traumatologia
ROMANIA SOROT Societatea Romana de Ortopedie si Traumatologie (no website)
RUSSIA MIITO Russian Scientific Research Institute of Traumatology and Orthopedics
SERBIA SOTA Serbian Orthopaedic Trauma Association (no website)
SLOVENIA SOTS Slovenská Ortopedická a Traumatologická Spolocnost (no website)
SPAIN SECOT Sociedad Española de Cirugía Ortopédica y Traumatología
SWEDEN SOF Svensk Ortopedisk Förening
SWITZERLAND SO swiss orthopaedics
UK BOA British Orthopaedic Association
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