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Updated: Jun 4 2021

Scapulothoracic Dyskinesis

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https://upload.orthobullets.com/topic/3134/images/protractionwalltest.jpg
  • summary
    • Scapulothoracic dyskinesis is a rare condition characterized by abnormal scapula motion leading to shoulder impingement and dysfunction.
    • Diagnosis is clinical with presence of scapulothoracic crepitus with a low and protracted scapula
      and symptoms being relieved with scapula stabilization.
    • Treatment involves NSAIDs and physical therapy with emphasis on periscapular muscle and rotator cuff strengthening. 
  • Epidemiology
    • Demographics
      • seen in athletes (baseball pitchers)
  • Etiology
    • Pathophysiology
      • causes are multifactorial including
        • neurologic injury
        • pathologic thoracic spine kyphosis
        • periscapular muscle fatigue
        • poor throwing mechanics
        • secondary to pain (shoulder, neck)
      • pathoanatomy
        • scapulothoracic power imbalance leads to protraction of scapula
          • leads to alteration of mechanics at glenohumeral joint
            • excessive stress placed on anterior capsule of shoulder and posterosuperior labrum
        • athletes have increased risk of injuring
          • labrum
          • rotator cuff
          • capsule
  • Anatomy
    • Scapulothoracic joint anatomy
  • Presentation
    • Symptoms
      • shoulder pain and dysfunction worse with arm elevation
      • loss of throwing velocity
    • Physical exam
      • scapulothoracic crepitus
      • affected scapula may be lower and protracted
      • symptoms relieved with scapula stabilization
  • Imaging
    • Radiographs
      • recommended views
        • complete shoulder series
      • findings
        • usually unremarkable
  • Treatment
    • Nonoperative
      • NSAIDs, PT, local injections
        • indications
          • main treatment
        • technique
          • physical therapy with emphasis on
            • core strengthening
            • scapular stabilizers, serratus anterior, trapezius
            • rotator cuff muscles
            • teaching proper core mechanics in throwers
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Question
1 of 2
In scope icon L 3
QID 219550 (Type "219550" in App Search)
A 13-year-old soccer player presents with the injury shown in Figure A. If a concomitant ligamentous anterior cruciate injury is found and addressed with an all-epiphyseal reconstruction at the time of injury, which of the following is the most likely outcome?
  • A

Delayed healing and nonunion

8%

67/838

Early arthritic progression involving the anteromedial compartment

6%

48/838

Increased incidence of compartment syndrome

5%

39/838

Premature physeal closure

17%

139/838

Return to the operating room for manipulation under anesthesia (MUA)

64%

537/838

  • A

Select Answer to see Preferred Response

Shoulder & Elbow | Scapulothoracic Dyskinesis
  • Shoulder & Elbow
  • - Scapulothoracic Dyskinesis
6:59 min
6/17/2022
339 plays
4.0
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