MedTrace Logo

In Vivo Arthroscopic Behavior of the Infrapatellar Plica of the Knee

NCT00643487 · Status: COMPLETED · Type: OBSERVATIONAL · Enrollment: 8

Last updated 2018-04-24

Study results available
· View outcomes & findings →

Summary

Anterior knee pain has been an enigmatic problem for orthopedic surgeons. Recent studies, as well as the clinical observation of the principle investigator have suggested that arthroscopic resection of the infrapatellar plica (IPP), a vestigial remnant from embryonic development of no known clinical or biological significance, may eliminate this pain. The mechanism whereby this pain is related to the IPP is unclear. This study will document the mechanical behavior of the IPP, its kinematics, as recorded on video among a group of subjects who are undergoing arthroscopy. Radiographic visualization of the observed behavior will be obtained by injection of contrast material, and then fluoroscopic recording of a standard series of motions. The plica will then be resected to avoid any possibility of residual symptoms related to its presence. Further fluoroscopy of the knee without plical attachment, will allow the kinematic behavior to be assessed. The procedure will then be terminated.

Conditions

  • Anterior Knee Pain Syndrome

Interventions

PROCEDURE

observation of the behavior of the infrapatellar plica

Local anesthesia using bupivicaine will be initiated. The IPP, if present will be injected with contrast material. In order to minimize discomfort, lidocaine 1%, in as small a volume as possible, will be injected into the fat pad under direct vision to avoid any intra-articular damage from the #25 needle. Radiographic visualization will be verified and the knee taken through a full range of passive and active exercises. Active quadriceps contraction in the subject will be performed at 0, 15, 30 60 and 90 degrees of flexion. In so far as is technically possible, the behavior of the IPP will be videotaped and recorded on lateral fluoroscopy.

Sponsors & Collaborators

  • State University of New York - Upstate Medical University

    lead OTHER

Principal Investigators

  • Thomas V Smallman, MD · State University of New York - Upstate Medical University

Eligibility

Min Age
18 Years
Max Age
80 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2006-02-28
Primary Completion
2013-01-31
Completion
2013-01-31

Countries

  • United States

Study Locations

More Related Trials

Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT00643487 on ClinicalTrials.gov