Rehabilitation and Therapy Commons^™

Knee And Hip Angle And Moment Adaptations During Cutting Tasks In Subjects With Anterior Cruciate Ligament Deficiency Classified As Noncopers, Jeff R. Houck, Andrew Duncan, Kenneth E. De Haven

Faculty Publications - College of Physical Therapy

Study Design: Two-factor mixed-design study, with factors including group (control and noncoper) and task (sidestep, crossover, and straight).

Objectives: To compare the knee and hip joint angles and moments of control subjects and subjects with an anterior cruciate ligament (ACL) deficient knee classified as noncopers, during a sidestep, crossover, and straight-ahead task.

Background: Subjects with ACL deficiency primarily note difficulty with cutting tasks as opposed to straight-ahead tasks. Yet, previous studies have primarily focused on straight-ahead tasks.

Methods and Measures: Fifteen subjects with ACL deficiency classified as noncopers, based on the number of giving-way episodes (1) and global question of …

In-Season Functional Shoulder Training For High School Baseball Pitchers, Jason Brumitt, Erik Meira, Greg Davidson

Faculty Publications - College of Physical Therapy

The overhead throwing motion is used in numerous sports including track, football, and baseball. Among these sports, the baseball pitch is unique in the demands placed upon the shoulder. The forces created in the shoulder can potentially lead to pathology affecting the athlete's career. To enhance performance and decrease the risk of injury, it is important that the athlete participate in a year-round periodized program. Inappropriate or deficient training combined with the stress that the shoulder experiences during a season can lead to strains, impingement, tendon or labral tears, and instabilities.

Rabbit Knee Joint Biomechanics: Motion Analysis And Modeling Of Forces During Hopping, David L. Gushue, Jeff Houck, Amy L. Lerner

Faculty Publications - College of Physical Therapy

Although the rabbit hindlimb has been commonly used as an experimental animal model for studies of osteoarthritis, bone growth and fracture healing, the in vivo biomechanics of the rabbit knee joint have not been quantified. The purpose of this study was to investigate the kinematic and kinetic patterns during hopping of the adult rabbit, and to develop a model to estimate the joint contact force distribution between the tibial plateaus. Force platform data and three-dimensional motion analysis using infrared markers mounted on intracortical bone pins were combined to calculate the knee and ankle joint intersegmental forces and moments. A statically …