Ultrasound Probe Pressure on the Intratendon Doppler Signal in Patellar Tendinopathy

Cardenal Herrera University

Status: Completed

Conditions: Patellar Tendinitis

Treatments: Procedure: Intratendon vascularization

Study type: Interventional

Funder types: Other

Identifiers

NCT04682496

CEI20/073

Details and patient eligibility

About

In the sports field, patellar tendinopathy is, as a pathology, one of the main concerns for athletes, both because of its incidence and because of the difficulty involved in their recovery. At the ultrasound level, tendinopathies can be divided, depending on the presence or absence of an intratendon Doppler signal, into hypervascular or hypovascular tendinopathy. Its classification is, today and clinically speaking, merely qualitative through the observation of the explorer. The ultrasound evaluation is carried out through a probe that is placed on the patient's skin, the procedure to be followed to obtain a vascular image is merely operator-dependent, that is, the position of the probe, the pressure exerted on the skin or even ultrasound optimization parameters can drastically modify the results.

Due to high pressure on the probe, the intratendon Doppler signal may be diminished in the quantitative variables of area, number of signals, pixel intensity, perimeter, solidity, perfusion index, circularity, major and minor diameter.

From a certain pressure on the probe, the intratendon Doppler signal can be drastically altered.

This study will try to evaluate the influence of the pressure exerted by the examiner with the probe on the quantitative variables of the intratendon Doppler signal in patellar tendinopathy.

To carry out the study, a single group with patellar tendinopathy will be established. Ultrasound evaluations with Doppler mode will be performed on the tendon using different probe pressures, monitoring the applied force and recording the images obtained for later analysis.

Enrollment: 30 patients

Sex: All

Ages: 18 to 65 years old

Volunteers: No Healthy Volunteers

Inclusion criteria

• Acceptance of participation in the study.
• Diagnosis of patellar tendinopathy with the presence of an intratendon Doppler signal.
• Subjects between the ages of 18 and 65.

Exclusion criteria

• Present some type of surgical intervention in the region to be explored that could alter in some way the ultrasound evaluation.
• Refer vascular pathology or the intake of medication that may alter blood flow or density.
• Having been treated with sclerosing techniques that can alter the perfusion or vascular resistance of the tendon tissue.

Trial design

Primary purpose: Other

Allocation: N/A

Interventional model: Single Group Assignment

Masking: None (Open label)

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30 participants in 1 patient group

intratendon vascularization

Experimental group

Description:

Intratendon vascularization will be quantified using a proprietary methodology using ImageJ 1.47v image analysis software, determining the different variables related to the Doppler signal within an intratendon region of interest.

Treatment:

Procedure: Intratendon vascularization