Thursday May 31, 11:42 am Eastern Time

Press Release

SOURCE: Interpore Cross International, Inc.

Interpore Cross to Acquire American OsteoMedix; Company to Market Products used
in Minimally Invasive Procedure to Relieve Pain of Vertebral Compression
Fractures

IRVINE, Calif., May 31, 2001 (PRIMEZONE) -- Interpore Cross International
(Nasdaq:BONZ - news) today announced that it has entered into a definitive
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agreement to acquire American OsteoMedix Corporation (AOM), a privately held,
Virginia based developer and manufacturer of minimally invasive medical devices.
The AOM-CDO System, introduced in mid-2000, is a controlled delivery system
designed to enhance the efficiency and safety of percutaneous surgery for the
placement of materials into the bony structures of the body.

Today, a rapidly growing number of physicians are selecting the AOM-CDO System
to place reinforcing substances inside of spinal vertebrae that have been
weakened or collapsed because of osteoporosis, which is estimated to cause over
600,000 vertebral compression fractures in the U.S. each year. This procedure,
known as vertebroplasty, is a new, minimally invasive surgical technique, which
successfully relieves the pain of such vertebral compression fractures. The AOM-
CDO System is gaining acceptance because of substantially reduced surgical times
and increased surgeon control.

The combination of Interpore Cross, already the nation's largest independent
publicly held medical device company focused on the spine, and AOM, will create
a unique and complementary blend of AOM's expertise and talent in developing
minimally invasive materials delivery devices with Interpore Cross' wide range
of orthobiologic products. In addition to Pro Osteon(tm) bone graft substitute,
BonePlast(tm) bone void filler, and AGF(tm) products for extracting a patient's
blood-based bone growth factors, Interpore


Cross recently announced the signing of an agreement with AlloSource to develop
and distribute a proprietary allograft putty later this year. The combined
technology and materials product suite offers a significant opportunity to
create new markets in a variety of orthopedic applications.

David C. Mercer, chairman and chief executive officer of Interpore Cross said,
``We expect that the acquisition of AOM will be a critical growth driver for
Interpore Cross. AOM has developed an extremely unique and proprietary approach
to deliver materials into the bone in a percutaneous procedure. The first
application of the AOM-CDO System has been in the fast-growing vertebroplasty
market. New products building on the same technology are near completion and are
expected to address other applications. The AOM-CDO System uniquely positions us
to offer surgeons and patients a cost- and time-saving new treatment modality
that is minimally invasive and can be significantly safer than other
techniques.''

Mercer added, ``In addition to the technology obtained through the transaction,
we're obtaining a highly qualified and proven management and product development
team. We believe they'll be an excellent fit in our organization, and we expect
them to help drive the delivery of innovative new products, particularly in the
minimally invasive surgery area, to the market.''

Eric D. Major, president of AOM, offered his comments on the transaction: ``As a
small, privately-held company, we've been somewhat resource constrained, and
capital raising activities have been a significant distraction to management.
This has limited our ability to respond to the growing demand for the product.
Now we will have access to the resources we need to capitalize more fully on the
surgeon interest that we encounter for the AOM-CDO System on a daily basis.
Interpore Cross is exactly the type of organization we were looking to become a
part of.''

The agreement calls for AOM to be merged into a wholly-owned subsidiary of
Interpore Cross. The transaction will be accounted for as a purchase and is
expected to close by July 31, 2001. The purchase price for all of the
outstanding stock and options of AOM will be approximately $8 million in cash
and approximately 2.4 million shares of Interpore Cross common stock, which
share amount is subject to adjustment.

The boards of directors of both companies have voted unanimously to approve the
transaction. Certain key shareholders of AOM have agreed to vote in favor of the
transaction. Eric Major, the president of AOM, will continue to serve as the
president of the business.

Consummation of the acquisition is subject to customary conditions, including
due diligence and approval by a majority of the shares held by AOM shareholders.
Upon closing of the acquisition, AOM will be entitled to nominate one person to
serve on Interpore Cross' Board of Directors.

AOM's unaudited revenues for the calendar year 2000 were approximately $1.2
million, and through the first four months of 2001 were approximately $1
million. Interpore Cross expects that the acquisition of AOM will be dilutive to
earnings in 2001 and slightly accretive to earnings, before goodwill
amortization, in 2002.

The company is conducting a conference call with analysts to review the
announcement today at 3:00 p.m. (EDT). Audio access to the conference call will
be available through a live webcast via a link provided in the Corporate &
Financial/Events section of Interpore Cross' website at www.interpore.com. The
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webcast of Interpore Cross' conference call will also be available for replay
through June 30, 2001 by accessing the same link.

Interpore Cross International is a medical device company that designs,
manufactures and markets spinal implant devices and orthobiologic products on a
worldwide basis. The spinal products are used to treat degenerative conditions,
deformities and trauma of the spine. The orthobiologic products are used for
bone and soft tissue repair in orthopedic and other applications. For more
information, visit



the company's website at www.interpore.com.

Certain statements in this release are forward-looking and may involve risks and
uncertainties, including, but not limited to: risks that the proposed
acquisition will not be completed timely or at all; risks that anticipated
synergies will not be realized; risks that the two companies cannot be
successfully integrated; product demand and market acceptance risks; risks that
future sales growth may decline; risk that the company will not receive
regulatory approval of products; risk that agents or distributors will be
unsuccessful in sales of products; risk that our contract partners will devote
insufficient time or resources to the manufacturing and distribution of our
products; risks related to the development of future products; the risk of
intellectual property litigation; and the impact of competitive products.
Additional information on factors that could affect the company's financial
results and growth prospects is disclosed in the company's reports filed from
time to time with the Securities and Exchange Commission.


CONTACT: Interpore Cross International, Irvine
         Richard L. Harrison, Chief Financial Officer
         (949) 453-3200

SOURCE:  Interpore Cross International, Inc.