Presentation on theme: "Return to Play Considerations in the Shoulder Injured Athlete: Part 1"— Presentation transcript:
1Return to Play Considerations in the Shoulder Injured Athlete: Part 1 Created by:Chip Hewgley, MPTEmory Physical TherapyEmory Sports Medicine
2Throwers ParadoxThe shoulder must be loose enough to allow excessive shoulder external rotation but stable enough to prevent symptomatic humeral head subluxation, thus requiring a delicate balance between mobility and functional stability.
3The key to effective treatment is a complete and thorough exam with differential diagnosis.
4Throwing InjuriesTypically the result of repetitive microtraumatic stresses put on the shoulder during the throwing motion.
5Causes of Injury Alterations in throwing mechanics Muscle fatigue Muscle imbalance/ weaknessExcessive capsular laxity
7Evaluating the throwing athlete Range of motionMuscle strengthLaxityProprioception
8Factors to ConsiderThrowing a baseball requires transfer of energy from feet through the legs, pelvis and trunk out through the shoulder elbow and hand.Reduce the risk of re-injury by following a GRADUAL progression of interval throwing.Proper warm-up is crucialMost injuries occur as a result of fatigueProper throwing mechanics lessen the incidence of re-injury
9Total Motion Concept ER + IR = total motion Sum of ER + IR = throwing vs. non throwing shoulder (+/- 5)
10Wilk, K.E. ASMI 2003.Study looked at 372 professional baseball players.Pitchers averaged 130 degrees of ER and 63 degrees of IR at 90 degrees of abduction.ER was 7 degrees > in throwing shoulder.IR was 7 degrees > in non throwing shoulder.
11Throwers Laxity / Acquired Laxity Describes the anterior capsule and inferior capsuleMost likely is acquired over time.
12Wilk, K.E. ASMI 2003Isokinetic testing of ER strength of the throwing athlete is significantly weaker (6%) vs. non throwing shoulder.IR strength was significantly stronger (3%) in throwing vs. non throwing shoulder.Optimal ER/IR strength ratio should be between 66-75%.
13Principles of Rehabilitation in the Thrower 1. Never overstress healing tissue.2. Prevent negative effects of immobilization3. Emphasize ER muscle strength.4. Establish muscular balance.5. Emphasize scapular muscle strength.6. Improve posterior shoulder flexibility.7. Enhance proprioception and neuromuscular control.8. Establish biomechanically efficient throwing.9. Gradually return to throwing activities.10. Use established criteria to progress.
144 Parts of Treatment Program Activity modificationFlexibility exercisesStrengthening exercisesGradual return to throwing
15Rehabilitation Program for the Overhead Thrower Phase 1 (Acute Phase)Goals:1. Decrease inflammation and pain2. Increase flexibility and normalize ROM3. Reestablish dynamic stability (muscle balance)4. Retard muscle atrophy5. Restore Proprioception
16Phase 1 Treatment1. Modalities: Cryotherapy, ultrasound, electric stimulation.2. Exercise: flexibility/stretching for IR and horizontal adductionRotator cuff strengthening with emphasis on ERScapular muscle strengthening with emphasis on retractor, protractor and deep depressorsDynamic stabilization (rhythmic stabilization)Closed kinetic chain and Proprioceptive trainingNo Throwing!!!!
25Strengthening Exercises Sidelying ER and Prone Rowing with ER have been shown to elicit the highest EMG activity of post. Cuff muscles (Fleisig).Scapula provides proximal stability to allow for distal mobility.
26Supraspinatus Strengthening Empty can exercise originally highlighted by Jobe for high EMG levels.Townsend reported highest EMG activity in the military press but this exercise is not recommended for throwers.Blackburn noted prone lying with arm abducted to 100 degrees and full ER had the highest EMG activity.We recommend the use of the “full can” exercise to avoid superior humeral head migration secondary to ER weakness.
43Sample mound program 25 throws @ 50% 35 throws @ 50% 50 throws @ 50% 25 throws live BP50 throws live BP1 inning game2 inning game3 inning game1 inning game on back to back days
44Phase 4: Return to Throwing Progression of long toss program to 120 feet.When the pitcher can throw from 120 feet pain free he may begin throwing from the windup on flat ground and progress to the mound.
45Biomechanics of Pitching 1. Windup: begins with foot drop and ends with hand separation.2. Stride: front foot moves towards home plate.3. Arm cocking: pelvis and upper trunk face home plate and ER occurs.4. Arm acceleration: from maximum ER to ball release.5. Arm deceleration: from ball release to end range IR6. Follow through: from maximal IR until pitcher regains balanced position.
46Softball vs. Baseball Pitch Fast Pitch softball (windmill style)Humerus in plane of scapulaAdduction of humerus- power generator is pec majorForearm strikes lateral thigh at ball release to decelerate arm vs. ER in baseball for deceleration
49Soreness Rules for ITP (Axe, Windley, Snyder-Mackler) If no soreness, advance 1 step every throwing day.If sore during warm-up but soreness is gone within the first 15 throws, repeat previous workout. If shoulder becomes sore during this workout, stop and take 2 days off. Upon return to throwing drop down 1 step.If sore more than 1 hour after throwing on the next day, take 1 day off and repeat the most recent throwing program workout.If sore during the warmup and soreness continues through the first 15 throws, stop and take 2 days off. Upon return to throwing, drop down 1 step.
50Softball ITP Cont’d2 throws to each base, 15 pitches (50%), rest 8 min, 15 pitches (50%), 1 throw to each base, 15 pitches (50%).2 throws to each base, 15 pitches (50%) X 3 w/ 8 min rest, 1 throw to each base, 15 pitches 50%.2 throws to each base, 15 pitches (50%), 15 pitches (75%) X 2 w/ 8 min rest, 1 throw to each base, 15 pitches (50%).2 throws to each base, 15 pitches(50%), 15 pitches (75%),15 pitches (75%), 20 pitches (50%), 1 throw to each base, 15 pitches (50%).2 throws to each base, 75%, 75%, 75%, 75%, 1 throw to each base, 75%.1 throw to each base, 100%, 75%, 100%, 75%, 1 throw to each base, 75%.1 throw to each base, 100%, 75%, 100%, 75%, 1 throw to each base, 75%.
51Softball ITP Cont’d1 throw to each base, 100%, 100, 100%, 100%, 1 throw to each base, 100%.1 throw to each base, 100%, 100%, 100%, 100%, 100%, 100%, 1 throw to each base, 100%.BP pitches total, 1 throw to each base per 25 pitches.Simulated game, 7 innings, pitches /inning, 8 min rest between innings.
52The Overhead Throwing Athlete Extreme stresses applied to the shoulder.Tremendous angular velocities (greater than 7000o/s).Throwers Paradox: loose enough to throw but stable enough to prevent symptoms. Mobility<> stability
53USA Baseball Recommendations 9-10 year olds50 pitches per game75 pitches per week1000 pitches per season2000 pitches per year
54USA Baseball Recommendations 11-12 year old pitchers:75 pitches per game100 pitches per week1000 pitches per season3000 pitches per year
55USA Baseball Recommendations 13-14 year old pitchers75 pitches per game125 pitches per week1000 pitches per season3000 pitches per year
56ReferencesWilk, K.E., Meister, K., Andrews, J.R. Current Concepts in the Rehabilitation of the Overhead Throwing Athlete. AJSM, vol30, NoPaine, Russell M. The Role of the Scapula in the Shoulder. The Athletes Shoulder.Wilk, K.E., Andrews, J.R. et al. Interval Sports Programs: Guidelines for Baseball, Tennis and Golf. JOSPT, vol 32, June 2002.Davies, G.J. Proprioception in the Thrower. ASMIWilk, K.E. Rehabilitation Guidelines for the Thrower with Internal Impingement. ASMIAndrews JR, Chmielewski T, Escamilla RF, Fleisig GS, Wilk KE. Conditioning program for professional baseball pitchers. ASMI, Birmingham, AL 1997.Andrews JR, Fleisig GS. How many pitches should I allow my child to throw? USA Baseball News, April, 1996.Fleisig GS, Barrentine SW, Zheng N Escamilla RF, Andrews JR. Kinematic and kinetic comparison of baseball pitching among various levels of development. Journal of Biomechanics 32 (12): , 1999.Lyman S, Fleisig GS, Andrews JR, Osinski ED. Effect of pitch type, pitch count, and pitching mechanics on risk of elbow and shoulder pain in youth baseball pitchers. AJSM 30(4): , 2002.Ellenbecker, T.S., Davies, G.J. The Application of Isokinetics in Testing and Rehabilitation of the Shoulder Complex. Journal of Athletic Training, 2000;35(3):Meister, K. Injuries to the Shoulder in the Throwing Athlete. Part Two Evaluation/Treatment. AJSM, vol. 28, NoAxe, M.J., Windley, T.C., Snyder-Mackler, L. Data Based Interval Throwing Programs for Collegiate Softball Players. Journal of Athletic Training. 2002;37(2):