1. Name
The Association is called "European Musculo-Skeletal Oncology Society" (E.M.S.O.S.).

2. Site
The Association, founded on September 27, 1987 in Cavasagra, Treviso, Italy, is established in Bologna at the Instituto Ortopedico "Rizzoli", Via Pupilli 1. On proposal by the Executive Committee, subsidiary sites may be established in other countries.

3. Aims
The aims of the Association are to advance the science and practice of the diagnosis and treatment of bone and soft tissue tumours, to promote basic en clinical research, and to disseminate knowledge in order to provide a common high standard of musculo-skeletal oncology. The particular purpose of the Association is to promote mutual collaboration between different specialists and institutes involved in the treatment of musculo-skeletal tumours.

4. Membership
The membership of the association consists of full members, honorary members, corresponding members and emeritus members.

Full members must be experts especially interested in musculo-skeletal oncology or scientists involved in kindred disciplines. Bylaws for new membership or resignation are reported in the "Rules" of the Society. Any application or resignation will be evaluated by the Executive Committee and the acceptance will be ratified by the General Assembly.

Honorary members may be proposed for their distinguished service to the musculo-skeletal oncology or to the Society, or nomination by the Executive Committee and elected at the General Assembly.

Corresponding members are admitted under the same rules as full members, but are not European.

Emeritus members are full members who have left their active professional post in oncology. They are allowed to attend the annual meeting. They are absolved from payment of membership fees.

Voting rights are reserved for full members and honorary members. Emeritus and corresponding members have no voting rights.

5. Oragnization
The work of the Association is carried out by the General Assembly and by the Executive Committee which operate in accordance with this Constitution Act and annexed Association's Rules.

General Assembly. This body is the supreme governing body of the Association and is composed of full members. Its tasks are:

• to elect the officials which are the President, the vice-President and the Secretary/Treasurer;
• to elect the members of the Executive Committee;
• to approve the annual report form the Executive Committee;
• to decide amendments of the Association's Rules;
• to deliberate the dissolution of the Association.

Election procedures are reported in the Association's Rules.

Executive Committee. This body conducts the affairs of the Association in accordance with the polices determined by the General Assembly from which it is elected. The Executive Committee is composed of:

• the President,
• the past-President,
• the vice-President,
• the Secretary,
• the Treasurer,
• seven full members.
• representative of A.O.Scandinavica (co-opted)

All the members of the Executive Committee are active for 3 years and are eligible for reelection. Two members of the Board will be replaced each year.

The Executive Committee decides about Association's Rules and procedures and its amendments.

6. Resources
The Association has the right to request a membership fee. The level of the membership fee will be proposed by the Executive Committee and will be decided by the General Assembly. The Association also welcomes support and benefits from sponsors and donors.

7. Meeting
The Association holds an annual General Assembly and at least one annual Scientific Meeting.

8. Amendments
Any amendment to the Constitution of the Association requires the assent of no less than two-thirds of the members present and voting at the General Assembly. Notice from a member of such amendments must be received by the Secretary no less than two months before the meeting. The Secretary will notify this fact to the members no less than one month before the annual General Assembly.

9. Dissolution of the Association
The Association may be dissolved by a resolution supported by no less than two-thirds of the members present and voting at the annual General Assembly. Notice of such a resolution must be received by the Secretary no less than two months before the meeting. This resolution may give authority for the proposal of assets, if remaining after payment and satisfaction of all debts and liabilities. Such property shall be given or transferred to other charitable institutions having similar objectives.