SLIDE 3 4/10/2017 3
PRESERVATION OF LUMBAR SPINE
MALE ~80to 90 mph FEMALE~60 to 70 mph
- Compression loading of the spine:
~8x an individual’s body weight or ~1,400 lbs produced during a golf swing around the L3-4 spinal segment ~1,900 lbs of spinal compression of Division 1-A football lineman hitting a blocking sled
5)Gatt JC, Hosea TM, Palumbo RC. Impact loading of the lumbar spine during football blocking. Am J Sports Med 1997;25(3):317–21. 6)Adams MA, Hutton WC. Mechanics of the intervertebral disc. In: Ghosh P, editor. The biology of the intervertebral disc. Boca Raton,FL: CRC Press, 1988:39–71.
- 3 phases to improved upon away from the course:
- Flexibility
- Strength
- Balance
PRO ACTIVE APPROACH FLEXIBILITY
JOINTS TO MAXIMIZE MOTION
HIPS:
- IR/ER ~ 45o EACH DIRECTION, 180O TOTAL AVAILABLE HIP MOTION
THORACIC SPINE/SCAPULAE:
- ROTATION~ 50o /SIDE BENDING ~35o GIVING 85-90O OF COUPLED
MOTION
JOINTS TO MINIMIZE MOTION
LUMBAR SPINE:
- MOST COMMON SITE OF INJURY
- MINIMIAL LUMBAR SPINE ROTATION AVAILABLE ~20-30O
- STRESSED MOST DURING TRANSITION
DOWNSWINGIMPACT AS TORQUE INCREASES ABOUT THE SPINE
3)Troupe JD. Biomechanics of the vertebral column. Physiology 1979;65:238. 4)Tall RL, DeVault W. Spinal injury in sport: epidemiologic considerations. Clin Sports Med 1993;12:441–8.