Scapular Dyskinesis

Stretching: The Truth

I'm planning on a series of articles to update our readers on some of the current concepts in pitcher related injuries and diagnoses that most fans have not heard much about.

We've all had our fill of reading about pitchers with rotator cuff and glenoid labrum tears. There are some interesting trends in sportsmedicine that have lead to changes in exercise programs throughout the majors and minors in an attempt to protect pitchers from a cascade of preventable injuries most fans don't know about.

Diagnoses such as:

GIRD: (Glenohumeral Internal Rotation Deficit...not to be confused with the stomach malady also known as GERD which Cubs fans get from watching too many losses). Pitching (both cocking phase and deceleration phase) leading to a tight or thickened posterior shoulder capsular ligament plus a loose anterior capsule and loss of internal rotation of the shoulder. Extra external rotation of the shoulder develops at the expense of internal rotation.

Scapular Dyskinesia: Shoulder blade weakness with altered kinematics.

Internal Impingement: Thought to be related to posterior shoulder contracture from GIRD with subsequent instability of the shoulder as the humeral head (ball of the shoulder joint) which shifts back/posteriorly and upward/superiorly). This is a different entity from subacromial or rotator cuff impingement which is more common and typically occurs from friction outside the shoulder joint.

...and finally connecting the dots, sorting out how the the injured or weakened shoulder (scapula) leads to severe strain on the elbow and tearing of the Ulnar Collateral Ligament (aka the Tommy John injury).

My attention to this topic started last summer, when  I heard a remarkable interview on XM radio with renown Orthopedic Surgeon, Dr. Craig D. Morgan with hosts Jim Memolo and Rob Dibble. The focus of the interview was Stephen Strasburg's shoulder tightness and the subsequent ulnar collateral ligament elbow injury that lead to "Tommy John" reconstruction of that ligament last summer. Dr. Morgan said that he had predicted elbow problems in Strasburg by watching the way he held his shoulder.

More on how the arm bone is connected to the...after the jump.

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  • I'm with you, Rob. You pretty much summed up how I feel about it.

    JoePepitone 17 min 23 sec ago view
  • Been quite the roller-coaster the past two days -- both games, plus the Chapman kerfuffel. How about a couple of nice, comfortable wins before facing Sale? Cubs should definitely wear throwbacks for that game.

    billybucks 1 hour 13 min ago view
  • The Cubs are stronger defensively than most of the teams they play. In order to capitalize on that, they have to a) put the ball in play and b) run the bases aggressively.

    That said, Cabrera has a strong, accurate arm, as witnessed by his 97 outfield assists over 12 seasons--mostly left field but also a lot of center. Bryant is rarely thrown out, but I guess you have to know who's throwing the ball.

    VirginiaPhil 2 hours 6 min ago view
  • On the other hand, Pries won his first start for Iowa, only giving up two HRs in the process. This trade has got some legs yet!

    Eric S 11 hours 14 min ago view
  • KB now with 0 RBI in his last 10 games and 1 in his last 15, despite having 19 hits in his last 15 games and raising his batting average from .278 to .286 over that span.

    Maybe have Zobrist hit 2 and KB hit 4?

    Also -- no HR in the last 15 games -- time for a bunch. Starting tomorrow.

    billybucks 11 hours 30 min ago view
  • Down a run. Fowler on first. Nobody out. KB singles to left, Fowler makes it to third, perfect throw from Cabrera nails KB trying to stretch for 2nd.

    So, instead of 1st & 3rd and no out, you have 3rd with one out. It was a perfect throw, but why take the chance with 3-4-5 hitters coming up?

    billybucks 11 hours 44 min ago view
  • Must be a Cub thing - our lefties can;t get lefties out.

    billybucks 11 hours 45 min ago view
  • Splitting hairs, but Jake's pitch was poor execution, while KB's play was a poor decision (and the 2nd time he got thrown out trying to stretch in the game). Poor execution happens. Poor decisions are preventable. Speaking of poor decisions -- Baez's steal of 3rd made absolutely no sense.

    billybucks 11 hours 46 min ago view
  • Didn't Jake cost them the game with a pitch to Frazier?

    The E-Man 11 hours 59 min ago view
  • Missed the play w/Bryant. What happened?

    The E-Man 12 hours 31 sec ago view
  • Not a good decision by Bryant in the 9th. That may have cost them the game.

    billybucks 12 hours 4 min ago view
  • Can we un-do the Montgomery deal? Please?

    billybucks 12 hours 5 min ago view
  • THAT WAS TURRIBLE.

    crunch 12 hours 8 min ago view
  • Who is this Arrieta guy? Can I get the old one back please?

    The E-Man 13 hours 16 min ago view
  • Well, this is, once again, the whole season for the Sox.

    billybucks 13 hours 20 min ago view
  • ...and the Bryant RBI jinx continues in the 3rd....crap.

    billybucks 14 hours 53 min ago view