Research by Dr. Carreira

Comparison of Noninvasive Distraction Techniques with Metal versus Waist Distraction in Ankle Arthroscopy

The purpose of this study is to compare the extent of distraction using metal distraction versus waist distraction during ankle arthroscopy across different points in the ankle joint itself. We hypothesize that noninvasive distraction using the Arthrex noninvasive metal distraction improves joint access, particularly posteriorly, when compared to waist distraction.

During a consecutive series of ankle arthroscopies of 30 patients, intraoperative measurements will be obtained comparing methods of non-invasive distraction with metal distraction using the Arthrex Metal Distractor (with posterior thigh pad counter) versus distraction using a sterile wrap around the surgeon’s waist.

Six points of measurements will be obtained, namely at the anterolateral corner, posterolateral corner, central anterior, central posterior, and posterolateral and posteromedial margins of the tibiotalar joint. The amount of distraction force will be measured using a custom designed tensionmeter. The amount of distraction at each of the six anatomic points within the joint will be measured using a custom made probe designed to measure the distance between the tibial and talar articular surfaces.

This study will help guide surgeons performing these procedures on the need for different types of distraction based on the localization of the lesion.

New Hip Arthroscopy Research Projects by Dr. Carreira and the Carreira Research Group

Dr. Carreira and the Carreira Research Group are currently conducting several clinical research studies regarding hip arthroscopy. Each study will focus on assessing and improving the current surgical standard of care. Patients that are candidates for hip arthroscopy and ankle arthroscopy are provided with the opportunity to contribute to the advancement of medicine. Qualifying candidates for the study may participate voluntarily by completing an informed consent process. The Institutional Review Board at Broward General Medical Center has approved the current studies.

Arthroscopic Reconstruction of the Acetabular Labrum using Allograft Fascia Lata: Technique and Early Results

The purpose of this study is to determine the effectiveness of using fascia lata tendon tissue from a cadaver to repair the acetabular labrum via hip arthroscopy. In patients with labrum tissue that is not reparable at the time of arthroscopy, this advanced technique replaces the damaged tissue, instead of removing or repairing it.

Patient progress will be monitored during follow-up appointments (3-weeks, 6-weeks, 3-months, 6-months, 12-months, and 24-months) after surgery.

Study patients will receive the same standard of care as all of Dr. Carreira’s patients and will be asked to complete the following three forms during their office visits before and after surgery:

Modified Harris Hip Score,
Tegner Score, and
the Pain Visual Analog Score.

Participation in this study is completely voluntary and patients may stop participation at any time.

The Relationship and Effects of Duration and Amount of Hip Traction on Nerve Injuries during Hip Arthroscopy

This 52-week study will focus on evaluating the prevalence of nerve injuries caused by traction during hip arthroscopy. In hip arthroscopy, the nerve injuries typically are rare and temporary, and the amount of force used for distraction has not been well reported.

By documenting the post surgical progress of these patients, a more exact determination of the frequency, extent and duration of symptoms will be determined. The amount of traction applied will be recorded regularly during the procedures, and neurological examinations on both lower extremities will be performed during the follow-up appointments (3-weeks, 6-weeks, 12-weeks, 26-weeks, and 52-weeks).

This study will not require any change in surgical protocols or procedures. Participation in the study is completely voluntary and patients may decline participation at any time.

For further information

For further information about Dr. Carreira and the Carreira Reseach Group’s current study projects, please contact Dr. Carreira’s office.