Accuracy of the Transpatellar Tendon Approach to Knee Arthrocentesis

Not Applicable

Completed

• Conditions: Knee Aspiration
• Interventions: Procedure: Transpatellar Approach; Procedure: Suprapatellar

• Registration Number: NCT00888368
• Lead Sponsor: 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.

Detailed Description

Not available

Study Timeline

• Study Start: 2008-01
• Study First Submitted: 2009-04-23
• Study First Submitted QC: 2009-04-24
• Study First Posted: 2009-04-27
• Primary Completion: 2009-08
• Study Completion: 2009-08
• Status Verified: 2012-07
• Last Update Submitted: 2012-07-11
• Last Update Posted: 2012-07-13

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 20

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

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: PARALLEL

Arm && Interventions

Group	Intervention	Description
Transpatellar Approach	Transpatellar Approach	-
Suprapatellar Approach	Suprapatellar	-

Primary Outcome Measures

Name	Time	Method
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.	1 time (intraop)

Trial Locations

Locations (1)

Denver Health Medical Center; 🇺🇸 Denver, Colorado, United States