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1. Running Injuries:The Latest and Greatest CPT Matt Fandre
USAFP 2007
2. Agenda Running Shoes
Myth of flat feet
ITB
RPPS
Stretching
Cross Training
Stress Fractures
Endurance Events
Exercise Hyponatremia
Conclusion
3. Running Shoes Running shoes are best matched to running style (foot strike, loading rate, etc.)
It is safe to empirically follow this guide:
Low arch/pronator: Motion control shoes
High arch: Cushioned shoes
Neutral: Stability shoes
4. Flat Feet Myth High arched runners are more likely than flat feet runners to suffer overuse injuries
5. ITB Common source of knee pain (lateral) in runners
Evidence that this is more an overuse injury than a mechanical predisposition
Pain worse running down hills or increasing stride length
Treatment
RICE, NSAIDs, Injection (consideration)
Stretching of hip flexors and plantar flexors
Strengthening needs to focus on gluteus medius muscles
6. ITB Treatment
7. RPPS Five-year prospective, randomized trial investigated long-term effects of open kinetic chain and closed kinetic chain exercises in the treatment of RPPS.
Only 20% of patients reported being pain-free at five years
Open kinetic chain group had less pain on the visual analog scale at night, less swelling of the joint, and less pain descending stairs as compared with the closed kinetic chain group
Open kinetic chain exercises do not need to be avoided and should augment traditional closed kinetic chain exercises
8. Open vs. Closed Chain OPEN CHAIN (Distal part not fixed)
quadriceps exercises (i.e., maximum isometric quadriceps contraction in full extension)
straight-leg raises
leg adduction exercises in a side-lying position CLOSED CHAIN (Distal part fixed)
seated leg presses-one-third knee bends on one leg or both
stationary bicycling
rowing machine exercises
step-up and step-down exercises
9. Stretching Pre-exercise stretching does not decrease lower extremity running injuries
Stretching does reduce soreness after exercise (2%)
A summary of 23 articles on stretching revealed an improvement in speed, but not running economy
10. Rehab/Cross Training Study compared 2 mile times
Water training
Cycling
Running
No change in run times between the groups
Cross training is effective in maintaining conditioning
11. Stress Fractures Occur in 13% to 37% of runners
Most heal in 6 to 8 weeks if compliance with protected weight bearing is followed
In 2/3 of symptomatic patients, radiographs are initially negative
Only half develop positive radiograph findings
Most common sign in early stress fracture is a region of focal periosteal bone formation
Bone scintigraphy is highly sensitive but lacks specificity in small joints such as the ankle and foot
MRI is also useful in the diagnosis of stress reaction and stress fracture
High degree of sensitivity and a higher degree of specificity relative to bone scintigraphy
12. Stress Fracture Images
13. Stress Fracture Images
14. Stress Fractures Leg length inequality may be a risk factor
Higher incidence of tibial, metatarsal, and femoral fractures in the longer leg
Higher incidence of fibular stress fractures in the shorter leg
Anterior tibial, medial malleolus, talus, navicular, fifth metatarsal, and sesamoids have a higher rate of nonunion
Treatment of recalcitrant stress fractures with intramedullary nailing has enabled patients to return to sports at an average of four months. This is an option for the treatment of chronic tibial stress fractures
15. Endurance Events 2-8% of marathon runners seek medical care
Four hours post marathon average CK rise of 540%
Risk of sudden death
Running:
1:396,000 man-hours
Marathon:
1:215,000 man hours
16. Exercise Induced Hyponatremia Severe hyponatremia may occur during events lasting longer than one hour
3 mechanisms:
Loss of electrolytes without enough replacement
Fluid overload (water)
Inappropriate fluid retention (aldosterone/ADH)
Risk factors
BMI < 20, female, temperature, longer race time, > 3L of fluid during the race
Treatment
Alternate between water and sports drinks
No more than 1liter of water/hour
Treatment does not involve rapid infusion of IVF.
17. Summary Wear good shoes: namely, shoes that work for you
Strengthen medial glutes for ITB
Proper conditioning is more likely to reduce injuries than stretching
Pay special attention to anterior tibial, medial malleolus, talus, navicular, fifth metatarsal and sesamoid stress fractures
Don’t overconsume water before/during endurance events
If you treat these patients, be aware of hyponatremia
Use the knowledge of the smart folks
18. Resources & Thanks Sports Medicine Fellows
PT department
Textbook of Running Injuries
Clinical Journal of Sports Medicine
American Journal of Sports Medicine
Medicine & Science in Sports & Exercise
Thank you to Dr. Kane, Dr. Brennan, and Dr. O’Connor