UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d)

of the Securities Exchange Act of 1934

Date of Report (Date of Earliest Event Reported): April 24, 2014

ZIMMER HOLDINGS, INC.

(Exact name of registrant as specified in its charter)

Registrant’s telephone number, including area code: (574) 267-6131

Not Applicable

Former name or former address, if changed since last report

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

On April 24, 2014, Zimmer Holdings, Inc. (“Zimmer”) and Biomet, Inc. (“Biomet”) issued a joint press release announcing the execution of an Agreement and Plan of Merger (the “Merger Agreement”), dated as of April 23, 2014, by and among Zimmer, Owl Merger Sub, Inc., a Delaware corporation and an indirect wholly-owned subsidiary of Zimmer (“Merger Sub”), and LVB Acquisition, Inc., a Delaware corporation and the parent company of Biomet (“LVB”), pursuant to which Zimmer will acquire LVB, on the terms and subject to the conditions set forth in the Merger Agreement. A copy of the joint press release is attached hereto as Exhibit 99.1 and is incorporated herein by reference. In addition, on April 24, 2014, Zimmer made available supplemental information regarding the proposed transaction in connection with a presentation to analysts and investors. A copy of the presentation is attached hereto as Exhibit 99.2 and is incorporated herein by reference.

Zimmer also distributed a letter from its President and Chief Executive Officer, David Dvorak, to Zimmer’s employees on April 24, 2014. A copy of the letter to employees is attached hereto as Exhibit 99.3 and is incorporated herein by reference.

Cautionary Statement Regarding Forward-Looking Statements

This document contains forward-looking statements within the meaning of the safe harbor provisions of the Private Securities Litigation Reform Act of 1995. Forward-looking statements may be identified by the use of forward-looking terms such as “may,” “will,” “expects,” “believes,” “anticipates,” “plans,” “estimates,” “projects,” “assumes,” “guides,” “targets,” “forecasts,” and “seeks” or the negative of such terms or other variations on such terms or comparable terminology. Such forward-looking statements include, but are not limited to, statements about the benefits of the proposed merger between Zimmer and LVB, including future financial and operating results, the combined company’s plans, objectives, expectations and intentions, the expected timing of completion of the transaction and other statements that are not historical facts. Such statements are based upon the current beliefs and expectations of Zimmer’s management and are subject to significant risks and uncertainties that could cause actual outcomes and results to differ materially. These risks and uncertainties include, but are not limited to: the possibility that the anticipated synergies and other benefits from the proposed merger of Zimmer and LVB will not be realized, or will not be realized within the expected time periods; the inability to obtain regulatory approvals of the merger (including the approval of antitrust authorities necessary to complete the transaction) on the terms desired or anticipated; the timing of such approvals and the risk that such approvals may result in the imposition of conditions that could adversely affect

the combined company or the expected benefits of the transaction; the risk that a condition to closing the transaction may not be satisfied on a timely basis or at all; the risk that the proposed transaction fails to close for any other reason; the risks and uncertainties related to Zimmer’s ability to successfully integrate the operations, products and employees of Zimmer and Biomet; the effect of the potential disruption of management’s attention from ongoing business operations due to the pending merger; the effect of the announcement of the proposed merger on Zimmer’s and Biomet’s relationships with their respective customers, vendors and lenders and on their respective operating results and businesses generally; risks relating to the value of the Zimmer shares to be issued in the transaction; access to available financing (including financing for the acquisition or refinancing of Zimmer’s or Biomet’s debt) on a timely basis and on reasonable terms; the outcome of any legal proceedings related to the proposed merger; the risks and uncertainties normally incidental to the orthopaedic industry, including price and product competition; the success of the companies’ quality and operational excellence initiatives; changes in customer demand for Zimmer’s or Biomet’s products and services caused by demographic changes or other factors; the impact of healthcare reform measures, including the impact of the U.S. excise tax on medical devices; reductions in reimbursement levels by third-party payors and cost containment efforts of healthcare purchasing organizations; dependence on new product development, technological advances and innovation; shifts in the product category or regional sales mix of Zimmer’s or Biomet’s products and services; supply and prices of raw materials and products; control of costs and expenses; the ability to obtain and maintain adequate intellectual property protection; the ability to form and implement alliances; challenges relating to changes in and compliance with governmental laws and regulations, including regulations of the U.S. Food and Drug Administration (the “FDA”) and foreign government regulators, such as more stringent requirements for regulatory clearance of products; the ability to remediate matters identified in any inspectional observations or warning letters issued by the FDA; changes in tax obligations arising from tax reform measures or examinations by tax authorities; product liability and intellectual property litigation losses; the ability to retain the independent agents and distributors who market Zimmer’s and Biomet’s products; dependence on a limited number of suppliers for key raw materials and outsourced activities; changes in general industry and market conditions, including domestic and international growth rates and general domestic and international economic conditions, including interest rate and currency exchange rate fluctuations; and the impact of the ongoing economic uncertainty affecting countries in the Euro zone on the ability to collect accounts receivable in affected countries. For a further list and description of such risks and uncertainties, see Zimmer’s periodic reports filed with the U.S. Securities and Exchange Commission (the “SEC”). Copies of these filings, as well as subsequent filings, are available online at www.sec.gov, www.zimmer.com or on request from Zimmer. Zimmer disclaims any intention or obligation to update or revise any forward-looking statements, whether as a result of new information, future events or otherwise, except as may be set forth in the companies’ respective periodic reports. Readers of this communication are cautioned not to place undue reliance on these forward-looking statements, since, while management believes the assumptions on which the forward-looking statements are based are reasonable, there can be no assurance that these forward-looking statements will prove to be accurate. This cautionary statement is applicable to all forward-looking statements contained in this document.

Additional Information and Where to Find It

Zimmer will file with the SEC a registration statement on Form S-4, in which a consent solicitation statement will be included as a prospectus, and other documents in connection with the proposed acquisition of LVB. The consent solicitation statement/prospectus will be sent to the stockholders of LVB. INVESTORS AND SECURITYHOLDERS OF LVB ARE URGED TO READ THE CONSENT SOLICITATION/PROSPECTUS, AND ANY OTHER FILINGS THAT MAY BE MADE WITH THE SEC IN CONNECTION WITH THE MERGER WHEN THEY BECOME AVAILABLE, AS THEY WILL CONTAIN IMPORTANT INFORMATION ABOUT THE MERGER. The registration statement and consent solicitation statement/prospectus and other documents which will be filed by Zimmer with the SEC, when filed, will be available free of charge at the SEC’s website at www.sec.gov or from Zimmer at www.zimmer.com. Such documents are not currently available. You may also read and copy any reports, statements and other information filed by Zimmer, LVB and Biomet with the SEC at the SEC public reference room at 100 F Street N.E., Room 1580, Washington, D.C. 20549. Please call the SEC at (800) 732-0330 or visit the SEC’s website for further information on its public reference room. Certain executive officers and directors of LVB have interests in the proposed transaction that may differ from the interests of stockholders generally, including benefits conferred under retention, severance and change in control arrangements and continuation of director and officer insurance and indemnification. This document shall not constitute an offer to sell or the solicitation of an offer to buy any securities, nor shall there be any sale of securities in any jurisdiction in which such offer, solicitation or sale would be unlawful prior to appropriate registration or qualification under the securities laws of such jurisdiction. No offering of securities shall be made except by means of a prospectus meeting the requirements of Section 10 of the Securities Act of 1933, as amended.

(d) Exhibits

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 hereunto duly authorized.

Dated: April 24, 2014

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