Motion Analysis Center

Using the latest motion capture technology to empower patients and clinicians.

MAC | Motion Analysis Center


The Motion Analysis Center (MAC) at Brooks Rehabilitation studies walking disorders in both adults and children, and provides specific and quantifiable information that can be used to improve rehabilitation or prevent injury. Through the use of innovative technology and clinical examination, our purpose is to advance rehabilitation science and clinical practice, leading to improved recovery and performance in individuals with neurologic and orthopedic impairments.

What Our Facility Has to Offer

Joint Kinematics (Using Motion Analysis):
A 14-camera motion analysis system is used to collect 3-D kinematic data. Small reflective markers are placed on the skin to identify joints and specific landmarks on the body. The reflections are detected by infrared cameras to help us learn how your joints move as you walk. The space is large and open, and the room is blocked from public view. Range of motion measurements of the hips, knees, ankles, pelvis, and trunk in the sagittal, frontal, and transverse planes are evaluated.

Joint Kinetics (Force Plates):
Four force plates are installed in the ground within the walking path to measure ground reaction forces. Using this information we can determine the lower extremity joint moments and powers and determine whether power is generated or absorbed by each joint. 

Muscle Activation (Electromyography):
Sensors on the surface of the skin can detect muscle activation to determine if it demonstrates appropriate timing and coordination during a specific activity. The following lower extremity muscles can be tested at this time:

  • Rectus Femoris
  • Vastus Medialis
  • Medial/Lateral Hamstrings
  • Tibialis Anterior
  • Medial Gastrocnemius
  • Soleus
  • Gluteus Medius

Temporal & Spatial Gait Parameters (GAITRite):
An instrumented walkway can be used to measure temporal (timing) and spatial (2-D geometric position) of foot placement. More specifically, patients walk across the mat so that stride length, double support time, step length, step time, average velocity, and many other measurements of gait can be obtained.

Adaptive Equipment:
Our facility has a body-weight support treadmill and a passive Zero-G track with harnesses to allow for a more permissive environment for patients who struggle to walk safely over-ground for testing.

Clinical Measurements:
Measurements of passive ROM, strength, sensory integrity, tone/spasticity, and overall posture/alignment are taken (as appropriate) to better interpret the findings provided by the data as the interpretation is being completed.

What to Expect from the Results

A physical therapist will use the information from the motion analysis, the clinical assessment and the medical history to provide a clinical interpretation of the movements during specific tasks. These interpretations will help determine appropriate treatment plans or simply to assess the effectiveness of current interventions.  ​​

Each motion analysis report includes assessment interpretations, recommendations and/or treatment suggestions, clinical assessment outcomes and graphical representation of the motion analysis data collected during the test.  A copy of the report is provided to the referring clinician or physician. A standard motion analysis report takes two-to-three weeks to complete, allowing time for processing and interpretation.​

Programs We Offer

Pediatric: For children with neurological impairments, motion analysis is used to understand the child's needs and make the best possible recommendations for therapy, surgical plans, and orthotic interventions. Our clinical report includes Passive Range of Motion, Tone (Modified Ashworth Scale), and Interpretation​/Key Findings of the motion analysis (Kinematics, Kinetics, EMG, and Temporal-Spatial data).

Neurological:​​ For individuals with neurological impairments or developments, motion analysis guides the treatment for conditions that limit mobility. Our clinical report includes Passive Range of Motion, Tone (Modified Ashworth Scale), and Interpretation​/Key Findings of the motion analysis (Kinematics, Kinetics, EMG, and Temporal-Spatial data). For more information, please see our MAC Neuro Education Document.

Sports:​​ For athletes with a sports-related injury, we can help determine their readiness to return to sport. Using advanced clinical testing combined with motion analysis, we provide a comprehensive assessment that can identify limb asymmetries, compensation strategies, and abnormal movement patterns.​ For more information, please see our MAC Sports Education Document.