These instructions for authors, along with information about copyright, can also be found in the journal.

Authors are requested to submit articles online via http://ees.elsevier.com/thekne. This is the Elsevier web-based submission and review system. You will find full instructions located on this site in the Tutorial for Authors. Please follow the guidelines to prepare and upload your article. Once the uploading is done, the system automatically creates an electronic pdf which is used for reviewing. All correspondence, including notification of the Editor's decision and requests for revisions, will be managed via this system.

Paper submissions are not normally accepted unless you are unable to submit electronically. If this is the case please contact the Editorial Office at knee@elsevier.com for assistance.

Publication condition
A manuscript submitted to this journal can only be published if it (or a similar version) has not been published and will not be simultaneously submitted or published elsewhere. A violation of this condition is considered fraud, and will be addressed by appropriate sanctions. Two manuscripts are considered similar if they concern the same hypothesis, question or goal, using the same methods and/or essentially similar data.

Preparation of the Manuscript
1. All publications will be in English. Authors whose 'first' language is not English should arrange for their manuscripts to be written in idiomatic English before submission
2. A separate title page should include the title, authors' names and affiliations, and a complete address for the corresponding author including telephone, fax numbers and e-mail address.
3. Authors should supply up to five keywords which may be modified or added to by the Editors.
4. An abstract not exceeding one paragraph of 250 words should appear at the beginning of each Article.
5. Acknowledgements should be included after the end of the Discussion and just prior to the References. Include external sources of support.
6. The text should be ready for setting in type and should be carefully checked for errors. Scripts should be typed double-spaced on one side of the paper only. Please do not underline anything, leave wide margins and number every sheet.
7. All illustrations should accompany the typescript, but not be inserted in the text. Refer to photographs, charts, and diagrams as 'figures' and number consecutively in order of appearance in the text. Substantive captions for each figure explaining the major point or points should be typed on a separate sheet.
8. Tables should be presented on separate sheets of paper and labelled consecutively but the captions should accompany the table.

Summary of Overall Arrangement of Manuscripts
You should arrange your contribution in the following order:
1. Title page including the article title, author(s), affiliation(s), keywords and one author identified for correspondence.
2. An abstract outlining the purpose, scope and conclusions of the paper.
3. The text suitably divided under headings. (Frequently Introduction, Material or Patients, Methods, Results, Discussion will prove satisfactory)
4. Acknowledgements.
5. References.
6. Tables with captions (each on a separate sheet).
7. Captions to illustrations (grouped on a separate sheet or sheets).
8. Illustrations, each on a separate sheet containing no text.

Illustrations
Authors are required to provide electronic versions of their illustrations. Information relating to the preferred formats for artwork may be found at http://www.elsevier.com/wps/find/authors.authors/authorartworkinstructions.

Please make sure that artwork files are in an acceptable format (TIFF, EPS or MS Office files) and with the correct resolution. If together with your accepted article, you submit usable colour figures then Elsevier will ensure, at no additional charge, that these figures will appear in colour on the Web (e.g., ScienceDirect and other sites) regardless of whether or not these illustrations are reproduced in colour in the printed version. For colour reproduction in print, you will receive information regarding the costs from Elsevier after receipt of you accepted article. Please indicate your preference for colour in print or on the Web only. For further information on the preparation of electronic artwork, please see http://www.elsevier.com/wps/find/authors.authors/authorartworkinstructions

References
Indicate references to the literature in the text by superior Arabic numerals which run consecutively through the paper. Where you cite a reference more than once in the text, use the same number each time. References should take the following form:

1. Journal articles (list all authors when six or less; when seven or more , list the first six and add et al.)
Amis AA, Dawkins GPC. Functional anatomy of the anterior cruciate ligament. J Bone Joint Surg [Br] 1991; 73B: 260-267

2. Books
Insall JN. Surgery of the Knee. New York: Churchill Livingstone, 1984

3. Chapter in a book Graf B. Isometric placement of substitutes for the anterior cruciate ligament. In: Jackson DW, Drez D, eds. The anterior cruciate deficient knee. St Louis: CV Mosby Co, 1987: 102-13. Please ensure that all references are complete, i.e. that they include, where relevant, author's name, article or book title, volume and issue number, publisher, year and page reference.

What information to include with the manuscript
1. Having read the criteria for submissions, authors should specify in their letter of transmittal whether they are submitting their work as an Original Article, Review Article, Short Communication, Case Report, or Meeting Report.

2. All authors should have made substantial contributions to all of the following: (1) the conception and design of the study, or acquisition of data, or analysis and interpretation of data, (2) drafting the article or revising it critically for important intellectual content, (3) final approval of the version to be submitted. A letter of transmittal should be included stating this. Include a statement, "Each of the authors has read and concurs with the content in the final manuscript."

3. All contributors who do not meet the criteria for authorship as defined above should be listed in an acknowledgements section. Examples of those who might be acknowledged include a person who provided purely technical help, writing assistance, or a department chair who provided only general support. Authors should disclose whether they had any writing assistance and identify the entity that paid for this assistance.

4. All sources of funding should be declared as an acknowledgement at the end of the text. Authors should declare the role of study sponsors, if any, in the study design, in the collection, analysis and interpretation of data; in the writing of the manuscript; and in the decision to submit the manuscript for publication. If the study sponsors had no such involvement, the authors should so state.

5. Only papers not previously published will be accepted; each manuscript must be accompanied by a statement signed by all co-authors that the material within has not been and will not be submitted for publication elsewhere except as an abstract. Emphasis will be placed upon originality of concept and execution.

6. Work on human beings that is submitted to The Knee should comply with the principles laid down in the Declaration of Helsinki; Recommendations guiding physicians in biomedical research involving human subjects. Adopted by the 18th World Medical Assembly, Helsinki, Finland, June 1964, amended by the 29th World Medical Assembly, Tokyo, Japan, October 1975, the 35th World Medical Assembly, Venice, Italy, October 1983, and the 41st World Medical Assembly, Hong Kong, September 1989. The manuscript should contain a statement that the work has been approved by the appropriate ethical committees related to the institution(s) in which it was performed and that subjects gave informed consent to the work. Studies involving experiments with animals must state that their care was in accordance with institution guidelines. Patients' and volunteers' names, initials, and hospital numbers should not be used.

7. At the end of the text, under a subheading "Conflict of interest statement" all authors must disclose any financial and personal relationships with other people or organisations that could inappropriately influence (bias) their work. Examples of potential conflicts of interest include employment, consultancies, stock ownership, honoraria, paid expert testimony, patent applications/registrations, and grants or other funding.

8. Authors are encouraged to suggest referees although the choice is left to the Editors. If you do, please supply the postal address and the email address, if known to you.

Randomised controlled trials
All randomised controlled trials submitted for publication in The Knee should include a completed Consolidated Standards of Reporting Trials (CONSORT) flow chart. Please refer to the CONSORT statement website at http://www.consort-statement.org for more information. The Journal has adopted the proposal from the International Committee of Medical Journal Editors (ICMJE) which require, as a condition of consideration for publication of clinical trials, registration in a public trials registry. Trials must register at or before the onset of patient enrolment. The clinical trial registration number should be included at the end of the abstract of the article. For this purpose, a clinical trial is defined as any research project that prospectively assigns human subjects to intervention or comparison groups to study the cause-and-effect relationship between a medical intervention and a health outcome. Studies designed for other purposes, such as to study pharmacokinetics or major toxicity (e.g. phase I trials) would be exempt. Further information can be found at www.icmje.org.

Preparation of Supplementary Data
Elsevier now accepts electronic supplementary material to support and enhance your scientific research. Supplementary files offer the author additional possibilities to publish supporting applications, movies, animation sequences, high-resolution images, background datasets, sound clips and more. Supplementary files supplied will be published online alongside the electronic version of your article in Elsevier web products, including ScienceDirect: http://www.sciencedirect.com. In order to ensure that your submitted material is directly usable, please ensure that data is provided in one of our recommended file formats. Authors should submit the material in electronic format together with the article and supply a concise and descriptive caption for each file. For more detailed instructions please visit http://www.elsevier.com/wps/find/authors.authors/authorartworkinstructions.

Changes to Authorship
This policy concerns the addition, deletion, or rearrangement of author names in the authorship of accepted manuscripts:
Before the accepted manuscript is published in an online issue: Requests to add or remove an author, or to rearrange the author names, must be sent to the Journal Manager from the corresponding author of the accepted manuscript and must include: (a) the reason the name should be added or removed, or the author names rearranged and (b) written confirmation (e-mail, fax, letter) from all authors that they agree with the addition, removal or rearrangement. In the case of addition or removal of authors, this includes confirmation from the author being added or removed. Requests that are not sent by the corresponding author will be forwarded by the Journal Manager to the corresponding author, who must follow the procedure as described above. Note that: (1) Journal Managers will inform the Journal Editors of any such requests and (2) publication of the accepted manuscript in an online issue is suspended until authorship has been agreed.
After the accepted manuscript is published in an online issue: Any requests to add, delete, or rearrange author names in an article published in an online issue will follow the same policies as noted above and result in a corrigendum.

Review and Publication Process
1. You will receive an acknowledgement of receipt of the manuscript by the Editorial Office before the manuscript is sent to referees. Please contact the appropriate Editor if you do not receive an acknowledgement.

Following assessment one of the following will happen:
A: The paper will be accepted directly. The corresponding author will be notified of acceptance by email. The accepted manuscript will be sent by the Editor to Elsevier Ltd., for publication.

B: The paper will be accepted subject to minor amendments. The corrections should be made and sent back to the Editor for checking. Once the paper is accepted the procedure as in 'A' above will be followed.

C: If the reviewers recommend major revisions to the paper, it will need to be re-reviewed before a final decision is made. The revisions should be made and the paper sent back to the Editor. The paper will be re-evaluated by referees and the assessment process will start again.

D: The paper will be rejected outright as being unsuitable for publication in The Knee.

2. By submitting a manuscript, the authors agree that the copyright for their article is transferred to the publisher if and when the article is accepted for publication. http://www.elsevier.com/wps/find/authorshome.authors/copyright
3. One set of page proofs in PDF format will be sent by e-mail to the corresponding author (if we do not have an e-mail address then paper proofs will be sent by post). Elsevier now sends PDF proofs which can be annotated; for this you will need to download Adobe Reader version 7 available free from http://www.adobe.com/products/acrobat/readstep2.html. Instructions on how to annotate PDF files will accompany the proofs. The exact system requirements are given at the Adobe site: http://www.adobe.com/products/acrobat/acrrsystemreqs.html#70win. If you do not wish to use the PDF annotations function, you may list the corrections (including replies to the Query Form) and return to Elsevier in an e-mail. Please list your corrections quoting line number. If, for any reason, this is not possible, then mark the corrections and any other comments (including replies to the Query Form) on a printout of your proof and return by fax, or scan the pages and e-mail, or by post. Please use this proof only for checking the typesetting, editing, completeness and correctness of the text, tables and figures. Significant changes to the article as accepted for publication will only be considered at this stage with permission from the Editor. We will do everything possible to get your article published quickly and accurately. Therefore, it is important to ensure that all of your corrections are sent back to us in one communication: please check carefully before replying, as inclusion of any subsequent corrections cannot be guaranteed. Proofreading is solely your responsibility. Note that Elsevier may proceed with the publication of your article if no response is received.
4. An order form for reprints will accompany the proofs.

Copyright
Upon acceptance of an article, authors will be asked to sign a "Journal Publishing Agreement" (for more information on this and copyright see http://www.elsevier.com/wps/find/authorshome.authors/copyright). Acceptance of the agreement will ensure the widest possible dissemination of information. An e-mail (or letter) will be sent to the corresponding author confirming receipt of the manuscript together with a 'Journal Publishing Agreement' form. If excerpts from other copyrighted works are included, the author(s) must obtain written permission from the copyright owners and credit the source(s) in the article. Elsevier has preprinted forms for use by authors in these cases: contact Elsevier's Rights Department, Philadelphia, PA, USA: Tel. (+1) 215 238 7869; Fax (+1) 215 238 2239; e-mail healthpermissions@elsevier.com . Requests may also be completed online via the Elsevier homepage ( http://www.elsevier.com/locate/permissions).

Agreements with Funding Bodies
Elsevier has established agreements and developed policies to allow authors who publish in this journal to comply with manuscript archiving requirements of the following funding bodies, as specified as conditions of researcher grant awards. Please see www.elsevier.com/wps/find/authorsview.authors/fundingbodyagreements for full details of the agreements that are in place for these bodies:

• Arthritis Research Campaign (UK)
• British Heart Foundation (UK)
• Cancer Research (UK)
• Howard Hughes Medical Institute (USA)
• Medical Research Council (UK)
• National Institutes of Health (USA)
• Wellcome Trust (UK)

These agreements and policies enable authors to comply with their funding body's archiving policy without having to violate their publishing agreements with Elsevier. The agreements and policies are intended to support the needs of Elsevier authors, editors, and society publishing partners, and protect the quality and integrity of the peer review process. They are examples of Elsevier's ongoing engagement with scientific and academic communities to explore ways to deliver demonstrable and sustainable benefits for the research communities we serve.

Authors who report research by funding bodies not listed above, and who are concerned that their author agreement may be incompatible with archiving requirements specified by a funding body that supports an author's research are strongly encouraged to contact Elsevier's author support team (AuthorSupport@elsevier.com). Elsevier has a track-record of working on behalf of our authors to ensure authors can always publish in Elsevier journals and still comply with archiving conditions defined in research grant awards.

Offprints
The corresponding author, at no cost, will be provided with a PDF file of the article via e-mail. The PDF file is a watermarked version of the published article and includes a cover sheet with the journal cover image and a disclaimer outlining the terms and conditions of use.

Further Information
Language Editing. Authors who require information about language editing and copyediting services pre-and post-submission please visit http://www.elsevier.com/locate/languagepolishing or contact authorsupport@elsevier.com for more information. Please note Elsevier neither endorses not takes responsibility for any products, goods or services offered by outside vendors through our services or in any advertising. For more information please refer to our Terms and Conditions http://www.elsevier.com/termsandconditions

Authors in Japan please note: Upon request, and if the author feels that it is necessary, Elsevier Japan will provide authors with a list of specialised people who can check and improve the English of their manuscript (before submission). Please contact our Tokyo office: Elsevier Japan, 1-9-15 Higashi-Azabu, Minato-ku, Tokyo 106-0044. Tel: (03)-5561-5032; Fax: (03)-5561-3045