FORM 6-K

                      SECURITIES AND EXCHANGE COMMISSION
                            WASHINGTON, D.C. 20549

                       Report of Foreign Private Issuer

                       Pursuant to Rule 13a-16 or 15d-16
                       of the Securities Exchange Act of
                                     1934


                                November 27, 2007

                        Commission File Number 001-14978


                               SMITH & NEPHEW plc
                              (Registrant's name)


                                15 Adam Street
                           London, England WC2N 6LA
             (Address of registrant's principal executive offices)


     [Indicate by check mark whether the registrant files or will file annual
reports under cover Form 20-F or Form 40-F.]

               Form 20-F  X                   Form 40-F
                         ---                            ---

     [Indicate by check mark if the registrant is submitting the Form 6-K in
paper as permitted by Regulation S-T Rule 101(b)(1).]

               Yes                            No  X
                   ---                           ---

     [Indicate by check mark if the registrant is submitting the Form 6-K in
paper as permitted by Regulation S-T Rule 101(b)(7).]

               Yes                            No  X
                   ---                           ---

     [Indicate by check mark whether by furnishing the information contained
in this Form, the registrant is also thereby furnishing information to the
Commission pursuant to Rule 12g3-2 (b) under the Securities Exchange Act of
1934.]

               Yes                            No  X
                   ---                           ---

     If "Yes" is marked, indicate below the file number assigned to the
registrant in connection with Rule 12g3-2 (b) : 82- n/a.





                                  SIGNATURES

     Pursuant to the requirements of the Securities Exchange Act of 1934, the
registrant has duly caused this report to be signed on its behalf by the
undersigned thereunto duly authorized.


                                                 Smith & Nephew plc
                                                 (Registrant)


Date: November 27, 2007
                                                  By:   /s/ Paul Chambers
                                                        -----------------
                                                 Paul Chambers
                                                 Company Secretary



Precautionary knee recall

27 November 2007


Smith & Nephew plc (LSE: SN, NYSE: SNN), the global medical technology business,
announced  today a  precautionary  recall of knees from the  TC-PLUS*,  VKS* and
RT-PLUS*  knee ranges.  Smith & Nephew has been informed by a UK supplier that a
limited  number  of  semi-finished  knee  implant  castings  have a higher  than
specified iron content.  These castings were manufactured  during a short period
of time in May and June this year on behalf of the  company's  subsidiary,  Plus
Orthopedics AG ("Plus").

The higher iron  content in these knee  products  has  occurred as a result of a
production  error at the  supplier's  factory.  The finished  products have been
supplied mainly to customers in Europe, with some to the US and other countries.
All affected products are now being recalled as a precautionary measure.

Of the affected products about 275 have been implanted and the recall process is
working to determine the status of  approximately  300 additional  implants;  of
these a  significant  proportion  is  expected  to be  located in  inventory  at
distributors and hospitals.

The higher iron  content of these  implants is not expected to pose any toxicity
or biocompatibility  issues for patients. Many orthopaedic implants contain iron
in much greater  percentages.  There have been no reports to date of any patient
problems  resulting from the use of these  implants.  Smith & Nephew is carrying
out  laboratory  testing to determine if the  implants'  material  properties or
durability have been affected.

Enquiries

Investors/Media
Liz Hewitt                                       Tel:   +44 (0) 20 7401 7646
Smith & Nephew
Group Director Corporate Affairs

Media

Jon Coles and Justine McIlroy                    Tel:   +44 (0) 20 7404 5959
Brunswick - London

Cindy Leggett-Flynn                              Tel:   +1 (212) 333 3810
Brunswick - New York

About Us

Smith  &  Nephew  is a  global  medical  technology  business,  specialising  in
Orthopaedic Reconstruction, Orthopaedic Trauma and Clinical Therapies, Endoscopy
and Advanced  Wound  Management  products.  Smith & Nephew is a global leader in
arthroscopy  and  advanced  wound  management  and is one of the leading  global
orthopaedics companies.

Smith & Nephew is  dedicated  to helping  improve  people's  lives.  The Company
prides  itself  on the  strength  of its  relationships  with its  surgeons  and
professional  healthcare  customers,  with whom its name is synonymous with high
standards  of  performance,  innovation  and trust.  The Company  operates in 32
countries around the world. Annual sales in 2006 were nearly $2.8 billion.

Forward-Looking Statements

This press release  contains  certain  "forward-looking  statements"  within the
meaning  of the  US  Private  Securities  Litigation  Reform  Act  of  1995.  In
particular,  statements  regarding  expected  revenue growth and trading margins
discussed under "Outlook" are  forward-looking  statements as are discussions of
our product pipeline.  These statements,  as well as the phrases "aim",  "plan",
"intend",   "anticipate",   "well-placed",   "believe",   "estimate",  "expect",
"target", "consider" and similar expressions, are generally intended to identify
forward-looking  statements.  Such forward-looking  statements involve known and
unknown risks,  uncertainties  and other important factors  (including,  but not
limited to, the outcome of  litigation,  claims and regulatory  approvals)  that
could cause the actual  results,  performance or achievements of Smith & Nephew,
or industry results,  to differ materially from any future results,  performance
or achievements expressed or implied by such forward-looking statements.  Please
refer to the  documents  that Smith & Nephew has filed with the U.S.  Securities
and Exchange  Commission  under the U.S.  Securities  Exchange  Act of 1934,  as
amended, including Smith & Nephew's most recent annual report on Form 20F, for a
discussion of certain of these factors.

All  forward-looking  statements in this press release are based on  information
available  to  Smith  &  Nephew  as of the  date  hereof.  All  written  or oral
forward-looking  statements  attributable to Smith & Nephew or any person acting
on behalf of Smith & Nephew are  expressly  qualified  in their  entirety by the
foregoing.  Smith & Nephew does not undertake any obligation to update or revise
any forward-looking  statement contained herein to reflect any change in Smith &
Nephew's expectation with regard thereto or any change in events,  conditions or
circumstances on which any such statement is based.

* Trademark of Smith & Nephew.  Certain marks registered US Patent and Trademark
  Office.