The Journal of Bone and Joint Surgery (American). 2004;86:193-200
© 2004 The Journal of Bone and Joint Surgery, Inc.
Mesh Expansion Release of the Lateral Patellar Retinaculum During Total Knee Arthroplasty
William L. Healy, MD1,
Richard Iorio, MD1 and
Paul Warren, MD1
1 Department of Orthopaedic Surgery, Lahey Clinic Medical Center, 41 Mall Road,
Burlington, MA 01805
Investigation performed at the Department of Orthopaedic Surgery, Lahey
Clinic Medical Center, Burlington, Massachusetts
The original scientific article in which the surgical technique was
presented was published in JBJS Vol. 85-A, pp.
1909-1913, October
2003
The authors did not receive grants or outside funding in support of
their research or preparation of this manuscript. They did not receive
payments or other benefits or a commitment or agreement to provide such
benefits from a commercial entity. No commercial entity paid or directed, or
agreed to pay or direct, any benefits to any research fund, foundation,
educational institution, or other charitable or nonprofit organization with
which the authors are affiliated or associated.
The line drawings in this article are the work of Joanne Haderer
Müller of Haderer & Müller
(biomedart{at}haderermuller.com).
BACKGROUND:
Release of the lateral patellar retinaculum can be used to treat
patellofemoral instability and to balance the extensor mechanism during knee
replacement operations. However, conventional lateral release disrupts the
integrity of the lateral knee capsule, may damage the blood supply to the
patella, and is associated with several other potential complications. Mesh
expansion release of the lateral patellar retinaculum was developed to achieve
the goal of lateral release and to reduce the potential for postoperative
morbidity.
METHODS:
Thirteen consecutive knees in eleven patients were treated with mesh
expansion lateral release during a total knee arthroplastyand were evaluated
after a minimum duration of follow-up of two years. The mesh release technique
consisted of multiple, longitudinal, parallel 5 to 10-mm stab incisions to
mesh and expand the lateral patellar retinaculum and thereby medialize the
patella in the trochlear groove of the femoral implant.
RESULTS:
Mesh expansion lateral release balanced the extensor mechanism in each
knee, maintained the mechanical integrity of the lateral capsule, and avoided
disruption of the lateral genicular blood supply to the patella. After a
minimum duration of follow-up of two years, no complications had been noted in
association with mesh expansion lateral release.
CONCLUSIONS:
Mesh expansion release of the lateral patellar retinaculum effectively
balanced the patellofemoral joint during total knee arthroplasty, maintained
the integrity of the lateral capsule, and preserved the lateral genicular
blood supply.

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Related articles in JBJS:
- Mesh Expansion Release of the Lateral Patellar Retinaculum During Total Knee Arthroplasty
- William L. Healy, Richard Iorio, and Paul Warren
JBJS 2003 85: 1909-1913.
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