Shoulder Research

The Dynamic Glenoid Track: An Updated Model of Glenohumeral Cartilage Contact During In Vivo Movement

In vivo kinematics from dynamic biplane radiography (DBR) will be combined with cartilage morphology from MRI to measure glenohumeral contact regions during loaded and unloaded dynamic movements (the dynamic glenoid track). The dynamic glenoid track will be measured in healthy controls and compared to the previously reported static glenoid track. Healthy shoulder data will then be used to develop a model to predict cartilage contact and instability in patients based upon their anatomy and their bone lesion size and location. The validity and robustness of the model will be evaluated by testing patients prior to surgery. Finally, the ability of the patient-specific models to predict cartilage contact regions after surgery will be evaluated using pre- and post-surgery data from patients.

Principal Investigator: William Anderst, PhD
Co-Investigators: Albert Lin, MD and Adam Popchak, DPT, Ph.D., SCS
Funding: National Institute of Health (NIH)

Predicting the Outcome of Exercise Therapy for Treatment of Rotator Cuff Tears

The aim of this NIH-funded study is to develop a “rotator cuff index” that will predict whether patients who have torn their rotator cuff should undergo non-operative or surgical treatment.  This index will be based on patient-reported and clinician-measured parameters as well as biomechanical measurements at the time of diagnosis.

Principal Investigators: Richard Debski, Ph.D., Jay Irrgang, Ph.D., PT, ATC and Volker Muhsal, MD
Co-Investigators: William Anderst, Ph.D. and Adam Popchak, DPT, Ph.D., SCS

Kinematic and Patient-Reported Outcomes Associated with Superior Capsule Reconstruction in the Presence of Irreparable Rotator Cuff Tears

The purpose of this pilot study is to determine glenohumeral joint kinematics and patient-reported outcomes in patients treated with superior capsule reconstructions.

Principal Investigators: Albert Lin, MD
Co-Investigators: William Anderst, Ph.D., Adam Popchak, DPT, Ph.D., SCS

Effects of prosthesis design and placement on shoulder kinematics and strength after reverse shoulder arthroplasty

The long-term goal of this research is to improve functional outcomes after reverse shoulder arthroplasty (RSA). In order to improve the functional outcomes, we must first accurately and precisely characterize shoulder kinematics after RSA.

Principal Investigator: Albert Lin, MD
Co-Investigators: William Anderst, Ph.D
Funding: NIH/NIA award #AG064417