The Reduction of Implant-Related Errors and Waste in Total Knee Arthroplasty Using
a Novel, Computer Based, e.Label and Compatibility System
Michael P. Ast, MD, David J. Mayman, MD, Edwin P. Su, MD, Alejandro M. Gonzalez Della Valle, MD,
Michael L. Parks, MD, Steven B. Haas, MD, MPH
Department of Orthopaedic Surgery, Hospital for Special Surgery, New York, New York
abstract article info
Article history:
Received 14 February 2013
Accepted 18 March 2013
Keywords:
total knee arthroplasty
wasted implants
implant related errors
Implant related errors and wasted arthroplasty implants represent a significant problem in the healthcare
system. Studies estimate that an implant is wasted in two to five percent of total joint replacement
procedures. After the introduction of a standardized time-out procedure, our institution still had a wasted
implant in one out of every 20 arthroplasty surgeries. We then implemented a computer based, e.Label and
compatibility system which standardized the implant labeling, confirmed correct size and side, and ensured
compatibility within implant systems. Use of this system decreased wasted implants from 5.7% to 0.8% of total
knee arthroplasty cases. This translated to an annualized cost savings of over $75,000 over our study period
which could extrapolate to over $82 million per year in savings to the US healthcare system.
© 2014 Elsevier Inc. All rights reserved.
Implant related errors are a commonly encountered problem in
orthopaedic surgery [1]. In addition to discarding sterile implants, and
the associated costs, these errors may lead to patient harm. Wasted
implants in arthroplasty surgery increase the cost of care on both
hospitals and the overall healthcare system [2]. In our institution,
dedicated exclusively to the delivery of musculoskeletal care, a
sterilely packaged implant that is opened and not implanted is wasted
in one out of every 20 primary total knee replacement procedures. The
cost of wasted implants is most often absorbed by the hospital and
represents a substantial waste of healthcare spending. In our
institution, it is estimated that the cost of these wasted implants
exceeds $1 million per year.
The reasons why implants are opened but not implanted during
arthroplasty surgery include contamination or damage by a member
of the surgical team, unforeseen surgical issues that arise during
implantation requiring a change in the necessary implant, such as an
intra-operative fracture or the need for additional constraint, as well
as opening of an incompatible combination of implants. The latter can
include implants of the wrong size or wrong side, implants of different
knee designs from the same manufacturer, or implants of different
manufacturers. These issues can be compounded by the complex
compatibility issues within modern arthroplasty systems and diffi-
culty visualizing and interpreting implant labels.
There is little room to prevent contaminated, dropped, or broken
implants, or to avoid all intra-operative issues. In order to decrease the
waste caused by compatibility issues, our institution implemented a
systematic implant “time-out” to verify laterality, size, design and
manufacturer. Despite this system, wasted implants still occur in
more than 5% of cases.
We propose the introduction of a novel, computer based, e.Label
and compatibility system to reduce implant-related medical errors
and waste in total knee arthroplasty. We hypothesize that the
implementation of this system will help reduce medical errors and
wasted implants by improving and standardizing the visual markers
for both the surgeon and operating staff, and also by ensuring that all
parts are compatible so that implant mismatches and inappropriate
laterality are prevented.
Methods and Materials
Prior to the initiation of this study, our institution recognized the
danger of implant errors as well as the importance of wasted implants.
A “time-out” procedure had been implemented to stop the surgical
procedure and to ensure that all implants were inspected by the entire
operating room staff, including the operating surgeon, prior to
opening of the boxes. A 32 inch flat panel monitor was installed in
each operating room and connected to a video camera that was used
to project the box labels onto the screen (Fig. 1) for visual inspection
by all members of the surgical team. A standardized protocol was put
in place which encompassed an eight point checklist prior to opening
any package. The checklist included confirmation of the manufacturer,
implant system, size, laterality, metal compatibility and expiration
The Journal of Arthroplasty 29 (2014) 132–136
The Conflict of Interest statement associated with this article can be found at http://
dx.doi.org/10.1016/j.arth.2013.03.013.
Reprint requests: Michael P. Ast, MD, Department of Orthopaedic Surgery, Hospital
for Special Surgery, 535 E. 70th St, New York, NY 10021.
0883-5403/2901-0027$36.00/0 – see front matter © 2014 Elsevier Inc. All rights reserved.
http://dx.doi.org/10.1016/j.arth.2013.03.013
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The Journal of Arthroplasty
journal homepage: www.arthroplastyjournal.org