Shoulder Function After Rotator Cuff Repair

Thank you for your interest in this study on shoulder function.  The purpose of this research is to better understand rotator cuff healing and shoulder function after rotator cuff surgery.  The reason we have asked you to consider participation in this study is because you have a rotator cuff tear that requires surgery.

In this study, researchers will measure shoulder strength and shoulder motion, and will assess healing of your repaired rotator cuff.  To measure shoulder motion, you will perform a simple shoulder motion while the study directors collect data using a state-of-the-art biplane x-ray imaging system. You will also have a CT exam of your shoulders, which allows us to measure the shape of your shoulder bones.  By combining the biplane x-ray images and CT images, we can very accurately measure the motion of your shoulder.  The images below provide a brief overview of how we measure shoulder motion in our laboratory.

To help us assess healing of the rotator cuff after surgery, a small tantalum bead (2 mm in diameter like the one in the photo below) will be implanted during your rotator cuff surgery.  This procedure is safe, has been used in many other patients, and you won't notice that the bead has been implanted.  It also will not change the way your rotator cuff is repaired during surgery.  When used in conjunction with the biplane x-ray imaging system (above), the bead will allow us to monitor healing of your rotator cuff.

If you choose to participate in this study, you will make a total of 5 visits to the Department of Orthopaedic Surgery's Motion Analysis Laboratory. The first visit will be prior to your surgery and the last visit will be 2 years after your surgery.  We will need you to visit the lab about a week after your surgery, but that visit will not require you to do any shoulder motion or strength testing. With the exception of the 1 week post-surgery visit, each visit will take approximately 90 minutes and you will be paid a total of $250 for participation in the study (see visit and payment schedule below).

To participate in this study, you must meet the following criteria:

  • Scheduled for rotator cuff surgery

  • Age 50-75

  • Not diabetic

  • Weight that does not exceed the maximum for your height (see table below)

If you meet ALL of the requirements above and are interested in participating in the study, please fill out the form below and click on the [Submit] button.  Someone from the Motion Analysis Laboratory will contact you about participating in the study within one week.

Name *
Phone *

Need More Info?

We understand you may have questions which you'd like to have answered before committing to being involved in this project.  If you have questions or need additional information, please contact us by e-mail at  Someone from our laboratory will be in touch with you within a day or two of receiving your message.

Thank you for your consideration of this important endeavor.  We realize that participating in this study is a big commitment, but we will do everything we can to work around your schedule and be respectful of your time.  This study is very important and we believe that information learned during this study will lead to improved surgical techniques and better outcomes in the future for patients with a rotator cuff tear.

Directions To Our Laboratory:

Our laboratory is located in the Wayne State University Integrative Biosciences (IBio) Center.  The address is 6135 Woodward Avenue, Detroit, MI 48202 (see map below). 

The IBio Center is a 3-story building that encompasses the entire city block bordered by Amsterdam, Burroughs, Cass, and Woodward (map below).  Secure, free parking is available for you in a gated lot on the south side of the building, accessible from Burroughs Street.  Upon arrival, press the intercom button at the gate.  Security will be expecting you and will open the gate.  Once you have parked, the main entrance to the building is located on the Woodward Avenue side of the building.