Proprioception Testing Device

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Proprioception Testing Device

Lee C. Groeneweg, EGR Thomas A. Farley,
EGR Steve Brodnicki, SPT Ryane Eno, SPT Mike
Terrell, SPT
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Definition of Proprioception

• Joint position sense without visual input
• Measurements help inform physical therapist of
  patients ability to determine limb location in
  space
• Also helpful in determining whether therapy
  interventions are necessary

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Measurement of Proprioception

• Blind fold individual
• Place the limb into a test position
• Hold in test position for a few seconds
• Record angle of test position
• Return to starting position
• Patient places limb into the testing position
• Record angle of repeated attempt

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Project Overview

• Device to isolate and measure internal and
  external rotation of shoulder joint

External Shoulder Rotation
Internal Shoulder Rotation
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Statement of Need

• Device to isolate and measure internal and
  external rotation of shoulder joint
• Must measure degrees similar to physical
  therapists goniometer
• Test position must be self restraining (Locking)

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Project Specifications

• Isolation and measurement of shoulder internal
  and external rotation
• Position of body - lying down on table
• No computer technology
• Easily used in a clinical setting
• Portable and light
• Measurement in degrees
• Inexpensive
• Test position must be self restraining (Locking)

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Design Constraints

• Patient positioned lying on back
• Shoulder blade must be immobilized
• Upper arm positioned 90 to body
• restrained
• allowing longitudinal motion
• in a resting position
• Elbow must be positioned 90 to upper arm

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Prototype Stage

• Discuss ideas
• 2-D CAD drawings
• Foam poster board
• Convey 3-D concept
• Receive approval

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Materials of Choice

• Aluminum
• Plastic
• Standard Fasteners
• Camera Tripod
• Mini Laser Pointers
• Ergonomic Knob

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Manufacturing Process Plan

• Plate
• band saw, vertical mill, disk grinder
• Risers
• vertical mill, hand-tapped threads
• Slider bracket
• vertical mill
• Plastic laser pen holders
• band saw, drill press
• Tripod support plate
• band saw, vertical mill, hand-tapped threads

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Production Stage

• Approval of prototype design
• Updated 2-D CAD drawings
• Process plan for manufacturing
• Obtain material
• Manufacture parts
• Assemble parts for fit
• Test for proper function

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Features Benefits

• Adjustable for multiple users
• Lightweight materials
• Fully Collapsible
• Portable while assembled
• Design is a baseline for future devices

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Q and A Session

Lee C. Groeneweg, EGR Thomas A. Farley,
EGR Steve Brodnicki, SPT Ryane Eno, SPT Mike
Terrell, SPT For addt'l project info
http//www.eod.gvsu.edu/groenelc/MnfgProcess/EGR3
67.html