PowerPoint Presentation

1* Charge sensors completely(couple of hours)* Do not recharge until charge is lowUsing sensors for the first few times

WHILE USING THE SENSORS FOR THE FIRST FEW TIMES, it is best to use the full charge before recharging the sensors.When you connect the sensors to the tablet PC with the Lameness Locator software, on the screen you will see 3 small boxes indicating the voltage of each sensor with both a number and a color.A green box indicates that the sensor is at least close to be fully charged and can be continuously used for at least one hour. A yellow box indicates that the sensors charge is intermediary and the sensor can be continuously used for at least 15 to 30 min.A red box indicates that the sensors charge is very low and the sensor can only be used for a couple of minutes before automatically turning off.12* Sensors do not have to be fully charged(15 minutes enough for a few trials)

* When fully charged, sensors canfunction for 3-4 hAfter using the sensors a few timesWhen not connected, sensors will shut off after 5-30 min to save battery charge

AFTER USING THE SENSORS A FEW TIMES,You do not have to fully charge the sensors15 min in the charger is enough to make the sensors work to collect data from a few trials.When fully charged, the sensors can be used for 3 to 4 h.When not connected to the computer, the sensors will shut off automatically in 5 to 30 min to save battery charge.23

THE WIRELESS SENSORS have labels illustrating where they have to be attached and how they have to be positioned.2 vertical accelerometers, one is attached to the head (using a head bumper) and the other to the pelvis (using a piece of velcro).For both sensors the plastic ridge must always face cranially and the LED lights must be facing the right side of the horse.The 3rd sensor is a gyroscope that is attached to the pastern of the right front limb (using a pastern wrap).For this sensor, the plastic ridge must be directed proximally and the LEDs must be facing the medial aspect of the limb.34

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Pocket forthe gyroscopeVelcro straps3M Dual Lock tapeto hold the sensor

THE HEAD BUMPER is not very different than head bumpers commonly used in horses but it is thinner and has a piece of velcro right at the center where the head sensor should be attached. THE PASTERN WRAP has a small pocket to hold the gyroscope.56To attach the head sensor1- Place the head bumper

TO ATTACH THE HEAD SENSORThe first thing to do is to put the head bumper on the horseThe velcro straps go around the halter to minimize movement of the head bumper67

2- Attach the sensor to the 3M Dual Lock tapeTo attach the head sensor

THE HEAD SENSOR IS SNAPPED ON THE VELCRO AT THE CENTER OF THE HEAD BUMPERAgain the LEDs should be facing the right side of the horse and the plastic ridge should be facing cranially as indicated in the label attached to the sensor78Alternative for the head bumperAttach the sensor to the halter

IF YOU CANNOT PUT THE HEAD BUMPER (for example, if the horse does not like the head bumper), attach the sensor directly to the halter with a piece of velcro and tape.Anyway it is important to place the sensor on the midline.89

If the halter is too lose, you can use tape to make it tighter.To obtain a good measurement of the head acceleration, the sensor has to move with the head (in other words, the sensor has to be firmly attached to the head).9

10To attach the pelvic sensor1- Make the horsestand squarely

find dorsal midline

check for pelvicsymmetry

To attach the pelvic sensor:First make the horse stand squarely because you have to put the sensor on the midline.It is also important to evaluate the symmetry of the pelvis, since pelvic asymmetry may give false readings of asymmetric acceleration of the pelvis which will be interpreted as lameness of the hind limbs.1011To attach the pelvic sensor2- Locate the dorsal spinalprocesses

Then palpate the dorsal spinal processes of the lumbar vertebrae and sacrum to locate the dorsal midline.1112To attach the pelvic sensor3- Attach a piece of 3M Dual Locktape over the sacral tuberosities

Attach a 3 inch piece of velcro on the sacral tuberosities.We recommend 3M dual lock tapeThe velcro should be oriented transversely relative to the horse.1213To attach the pelvic sensor

4- Attach the sensor to the3M Dual Lock tape

Snap the sensor on the velcro.The sensor should be in the midline. It is helpful to have someone looking at the horse from the back who will make sure that the pelvic sensor is on the midline.Again, the plastic ridge should be facing cranially and the LEDs should be facing the right side of the horse.1314To attach the pelvic sensor5- Cover the sensor with tape

If the velcro attached to the horse still allows too much vertical movement of the pelvic sensor (more than 2 mm), you can use tape to cover the sensorand minimize its vertical movement.Any tape with a strong adhesive such as duct tape can be used.Typically we use 6 pieces of tape each about 1 to 1 foot longTo obtain a good measurement of the pelvic acceleration, the sensor has to move with the pelvis (in other words, the sensor has to be firmly attached to the pelvis).1415To attach the sensorto the right front limb1- Attach the pastern wrap

To attach the to the right front limb, start putting the pastern wrap.Not too loose, not too tight.The pocket for the sensor should be dorsally

1516How to attach the sensorto the right front limb2- Attach the sensor to thepastern wrap

Attach the sensor to the velcro inside the pocket.Close the pocket around the sensor.1617How to attach the sensorto the right front limb3- Cover half of the wrap withan elastic adhesive tape

The sensor has to be on the dorsal aspect of the pastern.To prevent the pastern wrap from rotating, you can place a layer of elastic adhesive tape covering the proximal half of the pastern wrap and a couple of inches of skin just proximally to the wrap.1718Long range Bluetooth receiver

To connect the computer to the sensors you have to attach the long range Bluetooth receiver to a USB port.Forgetting to connect the USB receiver is the most common cause of failure to connect to the sensors.The USB flexible adapter can be used to minimize the risk of damaging the Bluetooth receiver.1819

Ready tocollect data

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