Medical Risk Assessment in Major League Baseball
Stan Conte, PT , DPT , ATC MIT Sloan Sports Analytic Conference March 2, 2013
in Major League Baseball Stan Conte, PT , DPT , ATC MIT Sloan - - PowerPoint PPT Presentation
Medical Risk Assessment in Major League Baseball Stan Conte, PT , DPT , ATC MIT Sloan Sports Analytic Conference March 2, 2013 Why Should We Care? Prevention Programs Outcomes Risk Assessment Lack of Clean Data Anecdotal- most
Stan Conte, PT , DPT , ATC MIT Sloan Sports Analytic Conference March 2, 2013
Prevention Programs Outcomes Risk Assessment
Anecdotal- most frequently used in baseball Individual Centers or Practitioner’s data (selection bias) Disabled List- Most consistent MLB HITS System- The Future for MLB
Not a true injury database. Used primarily as a Roster Management Tool. Certified by the Team Physician as an actual injury. Under reports the number of injuries and days lost compared to HITS data. Can highlight trends if used
Rules have not changed except for 7-day concussion DL.
300 350 400 450 500 550 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012
300 350 400 450 500 550 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012
“We also noted an increase in injuries after the 2005 season. The cause for this in unclear, but may be influenced by the change to a stricter drug surveillance policy before the 2006 season.” Posner, et al.
$0 $100,000,000 $200,000,000 $300,000,000 $400,000,000 $500,000,000 $600,000,000 $700,000,000 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012
Established in 2010 by MLB An Event based system Both a reporting system and data collection HITS System used to query the data-Can be very Granular Not reliant on DL or Admin Status A minimum of 180 different people entering data per day. Still determining reliability of the data
Disabled List Hits Total Injuries 504 1053 Total Days 29,706 35,258 Pitcher Shoulder Injuries 78 164 Pitcher Shoulder Days 5,866 6,516 Pitcher Elbow Injuries 100 161 Pitcher Elbow Days 9,439 11,309
45% 25% 11% 6% 15% 0% 5% 10% 15% 20% 25% 30% 35% 40% 45% 50% <30 31-60 61-90 91-120 >121
DL Days per Time Period
%
Injury Rate Avg DL Days Starting Pitchers 50.3% 65.3 days Relief Pitchers 32.6% 61.3 days All Pitchers 39.2% 62.7 days Non-Pitchers 33.6% 45.5 days
0% 10% 20% 30% 40% 50% 60% RHS LHS 3B SS OF RHR 2B C 1B LHR
0.00% 2.00% 4.00% 6.00% 8.00% 10.00% 12.00% 14.00% 16.00% RHS LHS RHR LHR C SS 3B 2B OF 1B
0.00% 2.00% 4.00% 6.00% 8.00% 10.00% 12.00% 14.00% 16.00% 18.00% 20.00% RHS LHS RHR LHR 3B C OF SS 1B 2B
Position Age Major League Service Time BMI Handness Country of Origin
Injury in past season Career Injury History Injuries by body part Severity of Injury by body part Surgery History Type of surgery Time duration from surgery
MRI/Diagnostic Tests Physical Exam GIRD Range of Motion Muscle Weakness Joint Laxity FMS Return to Competition Biomechanics of Throwing
Velocity changes Max Velocity vs Avg Velocity ERA/FIP Changes % Strikes K/BB Foul balls on 2 strike counts GB/FB ratios Horzontal Release Points Vertical Release Points Horiontal Movement Vertical Movement % Strike Zone Late Inning inconsiency Spin Rates Tyoe of Pitch % Return to Previous level of Performance
Total Pitches Increase in Pitches by Year Stressful Innings Pitchers Abuse Points Innings Appearances Pitches per Inning average
Players are like stocks Teams are like Portfolios Team specific
Peter Wehling, M.D., Ph.D.
Affiliations: Center for Molecular Medicine and Orthopaedics, Düsseldorf, Germany Orthogen AG; Düsseldorf, Germany Faculty of Medicine, Dep. Of Orthopaedics, University of Düsseldorf Center for Neurosensory Disorders, University of North Carolina, Chapel Hill, USA
destruction and pain in OA
inhibitor of IL-1
with different techniques. Also make other anti- inflammatory factors as well as growth factors.
Production of proteins
Monocyte adherence plays a critical role in production of proteins (esp. IL-1ra,) in the ACS syringe
Inflammation Res., 2003
Parameter T = 0 hrs (pg/ml) T = 0,5 hrs (pg/ml) T=24 hrs (pg/ml) Increase (factor) IL-4 ND 7,8 ± 2,3 17,2 ± 2,8 2,2*** IL-10 ND 4,3 ± 0,4 8,9 ± 1,2 2,1*** IL-13 ND 192 ± 13,0 189 ± 9,6 - IL-1Ra 73 ± 4,8 778 ± 58 10254 ± 165 140*** IL-1ß < 3.9 < 3.9 < 3.9
< 15,6 < 15,6 < 15,6
Definition of the rating Rating categories
Nutritional therapy Gene/cell therapy (surgical) Oral The- rapy Percutan./ physical therapy Intra-articular therapy NSAR/COX-2 inhibitor Paracetamol Corticosteroids Hyaluronan Weight reductions Muscular strengthening ACS Acupuncture Arthroscopic lavage Arthroscopic debridement TEP
1++ High 0.2 3 No 1++ High 0.32 3 No 1+ Med- ium 0.36 4 Yes 1++ High 0.29– 0.44 Yes 1++ High 0.15 2 Yes 1++ High 0.55 4 1++ Med- ium 0.32 Low 1+ medi um 0.44 Low 1- Med- ium 0.09 1- Med- ium 0.01 3 High
Level of Evidence (LoE) Effektgröße bzgl. Schmerz Anzahl Behandlungen (NNT) Relatives Risiko unerwünschter Ereignisse Effektgröße bzgl. Funktion
0.69 0.36 0.32 0.06 0.00 0.68 0.60
0.09
Transposition
2 High Provability of the effect: 1++ very good to 5 very poor Number of recommendations/ number of mentions Comparison of study results/literature and contrasting of the effectiveness of ACS and other selected therapies under application of statistical analysis methods No change = 0/improvement in case of value increase/deterioration in case of values < 0 (Max. 1.0) Number of treatments mentions for achieving a relief of the symptoms
Therapies (OA)
treat(NNT) Level of evidence (LoE) Recommendation Effect size reg. pain Effect size reg. function Effect size reg. stiffness Relative risk of undesired events
DTI (Diffusion Tensor Imaging)
UCLA
– Journal of Athletic Training, 2007
National estimates of the mechanism of concussion by sport for high school athletes, High School Sports-Related Injury Surveillance Study, United States, 2005–2006 school year