Accuracy of the Transpatellar Tendon Approach to Knee Arthrocentesis

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT00888368
Recruitment Status : Completed
First Posted : April 27, 2009
Last Update Posted : July 13, 2012
Information provided by (Responsible Party):
Denver Health and Hospital Authority

Brief Summary:

The purpose of this study is:

  • To determine the accuracy of intraarticular placement with the transpatellar tendon approach as compared to the suprapatellar approach. Patients undergoing knee arthroscopy will be consented for study of the injection of the fluid into the joint prior to portal placement or commencement of knee replacement. Patients will be randomized to receive injections via the transpatellar tendon or superolateral approach. Using injectable contrast and fluoroscopy, the placement of injections into the knee will be evaluated for accuracy. Injection attempts with contrast fluid that uniformly coats the articular surface on sagittal and coronal radiographs will be counted as successful. A concentration of contrast fluid in extraarticular fat will be counted as a failure.

Hypothesis: The rate of accuracy of intraarticular placement of the needle tip via the transpatellar tendon approach to knee aspiration is greater than that of the superolateral approach.

  • To determine the distribution of contrast material with the transpatellar tendon and superolateral apporaches. Using a previously described evaluation technique of dividing the knee into seven compartments, sagittal and coronal fluoroscopy images will be evaluated to determine the distribution of contrast fluid.

Hypothesis: Contrast injected into the knee via the trasnpatellar tendon approach will penetrate as many compartments of the knee as contrast injected via the superolateral approach.

Condition or disease Intervention/treatment Phase
Knee Aspiration Procedure: Transpatellar Approach Procedure: Suprapatellar Not Applicable

Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 20 participants
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Single (Participant)
Primary Purpose: Treatment
Study Start Date : January 2008
Actual Primary Completion Date : August 2009
Actual Study Completion Date : August 2009

Arm Intervention/treatment
Experimental: Transpatellar Approach Procedure: Transpatellar Approach
The transpateller approach for the injection of the dye will be used.
Active Comparator: Suprapatellar Approach Procedure: Suprapatellar
The suprapatellar approach will be used for the injection of the dye.

Primary Outcome Measures :
  1. The development of an easier approach to aspirating the knee may lead to improved accuracy of intraarticular needle placement by less experienced practitioners and more "anatomically difficult" knees. [ Time Frame: 1 time (intraop) ]

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Ages Eligible for Study:   18 Years to 80 Years   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • undergoing elective arthroscopic surgery of the knee
  • age greater than 18 years old and less than 80 years old
  • able to consent to a research study

Exclusion Criteria:

  • allergy to contrast dye, iodine or shellfish
  • currently pregnant
  • acute fracture or dislocation

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT00888368

United States, Colorado
Denver Health Medical Center
Denver, Colorado, United States, 80204
Sponsors and Collaborators
Denver Health and Hospital Authority

Responsible Party: Denver Health and Hospital Authority Identifier: NCT00888368     History of Changes
Other Study ID Numbers: DHMC07-0387
First Posted: April 27, 2009    Key Record Dates
Last Update Posted: July 13, 2012
Last Verified: July 2012