Fractures and Dislocations about the Shoulder in the Pediatric Patient

1. Fractures and Dislocationsabout the Shoulder in the Pediatric Patient Joshua Klatt, MD Original Author: Michael Wattenbarger, MD; March 2004 1st Revision: Steven Frick, MD; August 2006 2nd Revision: Joshua Klatt, MD; December 2009

2. Shoulder Trauma • Shoulder trauma is relatively uncommon • Usually easy to diagnose and treat • Rarely require reduction or open treatment • Great remodeling potential • Motion of shoulder joint compensates well • Must differentiate the serious injury from mild! Bishop & Flatow: Pediatric Shoulder Trauma. CORR 432:41-8, 2005.

3. Shoulder Region Fractures- Indications for Open Reduction • Open fractures • Displaced intraarticular fractures • Multiple trauma to facilitate rehabilitation • Severe displacement with suspected soft tissue interposition

4. Developmental Anatomy- Ossification Centers and Physes • Scapular ossification centers • Acromion • Coracoid • Glenoid • Medial border • Proximal humeral physis • Tent shaped • 80% of longitudinal growth • Medial clavicular epiphysis • Last to ossify 18-20 yrs • Last to fuse 23-25 yrs

5. Medial Clavicular Injuries • Clavicle 1st bone to ossify (intrauterine week 5), but medial clavicular epiphysis last to appear and close • 18 to 20 and 23-25 yrs, respectively • Most injuries are Salter-Harris type I or II, but true dislocations may occur • Important to differentiate, as treatment differs

6. Medial Clavicular Injuries • Clavicle shaft usually displaces anteriorly • But may displace posteriorly • If no evidence of medial epiphyseal # but pain and swelling, must rule out dislocation • Serendipity view or CT, if suspect • Image both sides http://emedicine.medscape.com/article/398799-overview

7. Medial Clavicular Injuries • Fractures usually heal and remodel • Attempt reduction if: • Injury < 10 days old • Cardiopulmonary symptoms • Posterior dislocation warrants prompt reduction due to associated complications • Failure to heal and remodel • Brachial plexus compression • Pneumothorax • Respiratory distress • Vascular compromise -Wirth & Rockwood: Acute and chronic traumatic injuries of the sternoclavicular joint. J Am Acad Orthop Surg 4:268–278, 1996. -Worman &Leagus: Intrathoracic injury following retrosternal dislocation of the clavicle. J Trauma 7:416–423, 1967.

8. Medial Clavicular Injuries Notice: Medial tip of clavicle adjacent to aortic arch!

9. Medial Clavicular Injuries • Treatment • Closed reduction • Patient supine with general anesthesia • Bump between shoulders • Traction to abducted arm • Towel clip • Open reduction • Have access to CT surgeon • Same positioning • Intra-articular disk often stays with sternum • Don’t excise epiphysis • Use suture fixation, NOT wires -Wirth & Rockwood: Acute and chronic traumatic injuries of the sternoclavicular joint. J Am Acad Orthop Surg 4:268–278, 1996. -Worman &Leagus: Intrathoracic injury following retrosternal dislocation of the clavicle. J Trauma 7:416–423, 1967.

10. Diaphyseal Clavicle Fxs • Most common fx of shoulder in children • 10-15% of all fractures • 50% are in children <10 yrs • Almost always heal, usually clinically insignificant malunion • Possible role for operative management if significantly shortened or displaced • Excellent remodeling within 1 year • Complications very uncommon

11. Diaphyseal Clavicle Fx Patterns • Most in middle 1/3 (90%) • 5% distal • <5% medial • Beware--nutrient foramen may look like a fracture

12. Clavicle Fractures Greenstick common

13. Typical Healing

14. Adolescent Clavicle Fractures • ORIF may be indicated if widely displaced or shortened • Adult literature supports ORIF for completely displaced fractures 16 year old female in MVC, multitrauma patient with widely displaced right clavicle fracture Canadian Ortho Trauma Society. Nonop treatment compared with plate fixation of displaced midshaft clavicle fxs. JBJS-Am 89(1):1-10, 07. Vander Have et al. Op vs Nonop Tx of Midshaft Clav # in Adolescents POSNA 2009 Paper Presentation, Boston, MA

15. Intraoperative C-arm views ORIF with lag screw and 2.7 mm DCP plate because of smaller size of adolescent clavicle

16. High energy displaced clavicle fractures in adolescents • Good results reported with ORIF • also report good results with ORIF of nonunion/malunion for those failing nonoperative care • Vanderhave POSNA 2009 Clinical and radiographic union at 2 months

17. Clavicle Birth Fxs • Large baby • Pseudoparalysis • Simple immobilization • If no plexus palsy active movement should return early

18. Congenital Pseudarthrosis of the Clavicle • Usually right side • If left, suspect dextrocardia • Often asymptomatic • If symptomatic in older child • Excise, tricortical graft, fixation Schnall et al: Congenital pseudarthrosis of the clavicle: a review of the literature and surgical results of six cases. J Pediatr Orthop 8:316–21, 1988.

19. Clavicular Nonunion • Uncommon • Treat according to symptoms • Use same surgical methods as in adults Kubiak & Slongo: Operative treatment of clavicle fractures in children: J Pediatr Orthop 22:736–9, 2002. Endrizzi et al: Nonunion of the clavicle treated with plate fixation. J Shoulder Elbow Surg 17:951-3, 2008.

20. Distal Clavicle Fx / “AC” Injury • AC separation very uncommon in children < 16yrs • Lateral clavicle remains with periosteal sleeve distally • Often intact inferior periosteum • Usually remodels very well • Close to physis • Periosteal sleeve fills in • Nonoperative tx • Sling x 3 wks

21. Distal Clavicle Fractures- Classification • Similar to adults • Based on amount and direction of displacement Tossy JD, Mead NC, Sigmond HM. Acromioclavicular separation: useful and practical classification for treatment. Clin Orthop 1963;28:111-9 Rockwood CA, Williams GR, Youg DC. Disorders of the acromioclavicular joint. In: Rockwood CA, Masten FA II, editors. The shoulder. Philadelphia: Saunders; 1998. p. 483-553.

22. Distal Clavicle Injuries – Periosteal Sleeve

23. Periosteal Sleeve Fills In

24. Type IV AC Dislocation 11 yo female Ped vs car

25. Initial XR

26. from front ------------from behind Distal clavicle posterior Coracoid Acromion

27. Suture Fixation around Coracoid POSTOP PREOP

28. Final X-ray- Full Motion

29. Scapula Fractures • May be a sign of significant trauma • Think of NAT in small children • Usually nonoperative treatment, unless intra-articular • Growth centers may be confused with fracture • 8-10 ossification centers • Axillary view often helpful Coracoid base fracture

30. Scapula Fractures - Classification • Multiple systems • Mostly descriptive and anatomically based • Can have fracture through common growth center of coracoid and glenoid (III) Ideberg R: Unusual glenoid fractures. Acta Orthop Scand 58:191-2, 1987. Goss TP: Fractures of the glenoid cavity. J Bone Joint Surg [Am] 74:299- 305, 1992.

31. Scapula Fractures - Treatment • Similar to treatment in adults • Isolated body fxs do not affect integrity of suspensory complex • Mildly displaced neck and coracoid fxs treated conservatively • unless associated with clavicle fx http://www.shouldersurgeon.com/shoulder_injury/fractures_floating_shoulder.htm Goss TP. Scapular Fractures and Dislocations: Diagnosis and Treatment. J Am Acad Orthop Surg. Jan 1995;3(1):22-33. Curtis RJ. Operative management of children's fractures of the shoulder region. Orthop Clin North Am 1990;21:315-324.

32. Scapula Fractures - Treatment • Glenoid rim fxs are treated according to amount of shoulder instability • Glenoid fossa fxs • ORIF if more than 5mm displacement or instability • Posterior approach usually gives best exposure Lee S, et al: Open Reducion and Internal Fixation of a Glenoid Fossa Fracture in a Child:A Case Report and Review of the Literature. J Orthop Trauma 11:452-4, 1997.

33. Glenohumeral Dislocations • Rare in young children • < 2% of all dislocations are in children < 10 yrs • 20% are in children 10-20 yrs • Most are anterior, as in adults • Frequently associated Hill-Sachs lesion • High rate of recurrent instability in childhood or adolescence (70-100%)

34. Traumatic Shoulder Dislocation • Gentle reduction • Pre-post neuro exam • Immobilization for approx 3 weeks • Shoulder rehabilitation • Surgical stabilization /reconstruction reserved for recurrent instability • Wait until skeletally mature, if possible

35. Glenoid Dysplasia • May predispose to instability • May be primary or secondary (after brachial plexus palsy)

36. Atraumatic Instability • Often multiple joint ligamentous laxity • Multidirectional instability usually present • May be voluntary (discourage) • Treat with rotator cuff strengthening

37. Proximal Humerus Fxs • Birth injuries • 0-5 yo Salter I • 5-11 yo metaphyseal • 11 to maturity – Salter II • Others rare (III, IV)

38. Birth Fractures of theProximal Humerus • Often Salter I type • Great remodeling potential • Simple immobilization with ACE bandage or wrap

39. Neer – Horowitz Classification Proximal Humeral Physeal Fractures • Grade I- < 5 mm • Grade II - < 1/3 shaft width • Grade III - <= 2/3 shaft width • Grade IV - > 2/3 shaft width -Proximal fragment sits in flexion, abduction and external rotation due to cuff -Distal fragment is shortened and in adduction due to deltoid and pectoralis Neer & Horowitz: Fractures of the proximal humeral epiphyseal plate. Orthopedics 41:24-31, 1965.

40. Metaphyseal Fxs

41. Remodeling over 6 Months

42. Treatment Principles-Proximal Humerus • Closed treatment for vast majority • If markedly displaced, attempt closed reduction and immobilize • Reduction is unlikely to hold without fixation • Reserve closed vs. open reduction and pinning for fractures with significant displacement • (> Neer II) in older adolescents, recurrent displacement • Open reduction if soft tissue prevents reduction • Deltoid, capsule, long head of biceps

43. Proximal Humerus – Acceptable Alignment • Great remodeling potential • 80% of humeral length contributed by proximal physis • Shoulder ROM is compensatory • Age dependent? • A few studies state that even older adolescents have acceptable functional outcomes after nonoperative treatment of proximal humerus fxs • Closed reduction not usually successful, nearly impossible to maintain reduced position

44. Treatment Algorithm

45. Shoulder Immobilization- Coaptation Splint

46. Early Healing Noted 3 Weeks after Closed Reduction in Adolescent 3 weeks after closed reduc. Injury film

47. Pinning Proximal Humerus • Usually don’t need to • Most recent studies quote high complication rates (pin migration, infection) • Even in older adolescents some remodeling occurs • Few functional deficits • If used, leave pins long and bend outside skin, consider threaded tip pins

48. Percutaneous Pinning-this technique may lead to pin migration

49. Pinning BEND PINS TO PREVENT MIGRATION, THREADED TIPS

50. Percutaneous Screw Fixation