Shoulder Joint Kinematics During Weighted Reaching Tasks Preoperative and Postoperative Supraspinatus Repair
Mentor 1
Alyssa Schnorenberg
Location
Union Wisconsin Room
Start Date
27-4-2018 1:00 PM
Description
Rotator cuff tears are one of the most common injuries to the shoulder joint with about one fifth of the US population experiencing a rotator cuff tear. Around 200,000 Americans have surgery to repair a torn rotator cuff each year. These tears can impact normal shoulder function and often cause mild to severe pain and discomfort, while limiting independence. Therefore, it is important that successful surgery and rehabilitation occurs to ensure that patients can safely resume daily activities. In this study, three subjects with supraspinatus tears will be tested pre-operatively and post-operatively while performing two weighted reaching tasks in the coronal plane. A 15 camera Vicon T-Series Motion Capture System will be used to record upper extremity joint kinematics, while lifting a weight of up to two pounds from waist height up onto a platform that is 30.3 cm tall and then taking a weight of up to two pounds off a platform at eye level and moving it down 30.3 cm. The subjects will do these tasks both before surgery and nine to twelve weeks after surgery. A custom biomechanical model will be applied to the motion data to calculate three-dimensional shoulder joint angles. These tasks will help to compare the subjects' range of motion (ROM) and peak abduction between the pre-operative and post-operative visits. It is expected that each participant's ROM and peak abduction will be greater after surgery, as the supraspinatus is responsible for abduction of the arm. It is the goal of surgery that after operation the compensation and limited movement of the injured arm is reduced. These results may be used by therapists to create new strategies for shoulder rehabilitation.
Shoulder Joint Kinematics During Weighted Reaching Tasks Preoperative and Postoperative Supraspinatus Repair
Union Wisconsin Room
Rotator cuff tears are one of the most common injuries to the shoulder joint with about one fifth of the US population experiencing a rotator cuff tear. Around 200,000 Americans have surgery to repair a torn rotator cuff each year. These tears can impact normal shoulder function and often cause mild to severe pain and discomfort, while limiting independence. Therefore, it is important that successful surgery and rehabilitation occurs to ensure that patients can safely resume daily activities. In this study, three subjects with supraspinatus tears will be tested pre-operatively and post-operatively while performing two weighted reaching tasks in the coronal plane. A 15 camera Vicon T-Series Motion Capture System will be used to record upper extremity joint kinematics, while lifting a weight of up to two pounds from waist height up onto a platform that is 30.3 cm tall and then taking a weight of up to two pounds off a platform at eye level and moving it down 30.3 cm. The subjects will do these tasks both before surgery and nine to twelve weeks after surgery. A custom biomechanical model will be applied to the motion data to calculate three-dimensional shoulder joint angles. These tasks will help to compare the subjects' range of motion (ROM) and peak abduction between the pre-operative and post-operative visits. It is expected that each participant's ROM and peak abduction will be greater after surgery, as the supraspinatus is responsible for abduction of the arm. It is the goal of surgery that after operation the compensation and limited movement of the injured arm is reduced. These results may be used by therapists to create new strategies for shoulder rehabilitation.
