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ProKnee Professional Protection

ProKnee Professional Protection. Ravi Chacko CEO Chase McCaleb CFO Walker Plash CMO Perry Yin CTO George Zhou CRO. Design Problem. Each year in the US 100,000-200,000 people sustain a ruptured or torn ACL. (Mayo Clinic) Surgery >$10,000 Rehab >$10,000

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ProKnee Professional Protection

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  1. ProKneeProfessional Protection Ravi Chacko CEO Chase McCaleb CFO Walker Plash CMO Perry Yin CTO George Zhou CRO

  2. Design Problem Each year in the US 100,000-200,000 people sustain a ruptured or torn ACL. (Mayo Clinic) Surgery >$10,000 Rehab >$10,000 Emotional, social and productivity costs

  3. Known Risk Factors • Screening for risk factors has shown reduction in injury rates (Hewett) • Physiological Factors • Hormones, Sex, Leg Dominance, Joint Laxity/Recurvation • Behavioral Factors • Landing/Jumping • Limb position and resulting stresses on knee, hip, and ankle • Toe to heel shock absorption • Side-step/Cut • muscle firing patterns

  4. Design Brief • Standardize ACL screening and preventative training • Method: • Measure leg mechanics (e.g. position, angle, forces) during jumping, landing or cutting • Determine risk factors and generate personalized training regimen to correct for those factors

  5. Constraints and Specifications • Health and Safety • Should not overexert or injure user • Sensor device must be reusable • Cost • Customers will pay <$500 for this type of diagnostic equipment • Insurance may supplement cost • Reliability and Use • Results promptly displayed after testing • Imaging modality has sufficient resolution to determine position accurately • Calculations and results must yield significant medical benefit • Should allow freedom of movement for accurate results • Comfort • Device must be comfortable to wear with dimensions similar to athletic clothing • Cannot impede usual athletic movement

  6. Existing Products Flock of BirdsMotion Capture Biodex System KINE Live Spring Loaded Goniometer

  7. Components • Testing Modality • Landing, Cutting, Jumping • Sensors • Accelerometer • Electromyogram (EMG) • Goniometer • Gyroscopes • Pressure Sensor • Displacement Sensor • Output • Risk factors • Targeted training regimen • Live biofeedback

  8. ProLand • Risk Factors Tested: • Knee Angle • Ankle Pronation • Components: • Gyroscopes • Pressure Sensor • Display

  9. ProCut • Risk Factors: • Delay in activation of Vastus Lateralis (VL), Semitendinosis (ST) during sidecut • Components • EMG on VL and ST • Accelerometer/gyroscope • Display VL-ST delay: Risk Group: Zebis et al. 2009

  10. ProScore • Risk Factors: • Knee and hip landing angle • Ankle and foot arch pronation • Ligament Dominance • Knee Abduction moment • Knee stability (Anterior-Posterior) • Components • Goniometers • Pressure Sensors • Gyroscopes • Wireless Transmitter • Display Hip Angle: Knee Angle: Medial Knee motion: Abduction Moment: Stability: Dynamic Foot Pronation: Ankle Pronation:

  11. Thank you • Dr. Paul Sadja • Associate Professor of Biomedical Engineering • Jim Gossett • Associate Athletics Director for Sports Medicine • Paige Plash • Physical Therapist, COO Encore Rehabilitation • Dr. Elizabeth Hillman • Assistant Professor of Biomedical Engineering • Keith Yeager • Senior Staff Associate, Laboratory Manager

  12. Questions?

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