Orthopedics and Sports Medicine




Sprains and Strains



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Introduction




  • Goal of section: The reader will understand common causes of acute ankle, knee, shoulder, back injuries, and chronic back pathology injuries, their diagnoses and management.
  • 1%–19% of musculoskeletal injuries evaluated in the ED receive proper discharge instructions for optimal management and rehabilitation.

    • The mnemonic PRICEMMMS (see treatment section) includes the necessary components for proper care of acute musculoskeletal pain and swelling.




Definitions




  • Sprain: Stretch or tear of a ligament that connects two or more bones (localized tenderness, swelling, ± joint instability over injured ligament)
  • Strain: Inflammation and injury to a muscle or tendon
  • Acute: Pain less than 3 mo
  • Chronic: Pain greater than 3 mo
  • Valgus: A force or alignment that results in the joint opening medially
  • Varus: A force or alignment that results in the joint opening laterally (opposite of valgus)
  • Apophysitis: Inflammation of growth plate (epiphysis under tension at site of tendon insertion)
  • Spondylolysis: Stress injury or fracture of pars interarticularis
  • Spondylolisthesis: Anterior movement of one vertebrae in relation to adjacent vertebrae




Evaluation




  • History: (1) mechanism of injury; (2) degree of functional impairment immediately after injury; (3) a “pop”, snap, or tear (→ fracture or ligament tear); (4) painful locking or catching sensation (→ cartilage tear, loose body, Osteochondritis dissecans (OCD); (5) feeling of instability (→ dislocation or ligament injury); (6) onset and timing of swelling; (7) pain assessment (where, pain scale 0–10, what makes it worse, what makes it better)
  • Physical exam

    • Inspection: Surface anatomy (alignment, swelling, ecchymoses, or deformity)
    • Neurovascular: Document pulses, and determine sensation
    • Palpation: Provoke complaint by pressing with fingertips to elicit tenderness
    • Range of motion: Active, passive (flexibility), resisted (strength)
    • Provocative tests: Special maneuvers or manipulation techniques unique to each body segment (see Tables 1–6; a video demonstration of each exam is available at http://www.sportsmedkids.com)
    • Function: Assess patient’s ability to bear weight, stand, walk, toe raise, hop, broad jump, throw

  • Red flags: Fever; sweating; age <5 yo; local tenderness/warmth/redness; no history of injury; night pain; weight loss; migratory joint pain (SLE, rheumatic fever, HSP, subacute endocarditis, Lyme disease, gonococcal arthritis, viral or Mycoplasma infection, sepsis); elevated WBC, ESR, or CRP (evaluate for septic arthritis or osteomyelitis).
  • Radiographic studies

    • Two views minimum of entire bone. Add oblique view for foot, ankle, and elbow injuries (foot injuries require weight-bearing views so that a Lisfranc injury is not missed).
    • Normal X-ray does not rule out fracture: Consider other views if exam strongly suggests fracture (if in doubt, splint and order follow-up radiographs in 5–10 d).




Ankle Exam



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Exam


Potential Injury


Additional Testing/Management


PALPATION (TENDERNESS)


Lateral malleolus



  • Fractured fibula; ligament tear


  • Ankle X-ray (three views) if point tenderness OR unable to bear weight
  • Initial talus fracture X-ray may be (-)
  • See section on fractures and splinting

Length of fibula



  • Maisonneuve fracture

Medial malleolus



  • Fractured tibia; ligament tear

Base fifth MT



  • Fracture

Navicular bone



  • Fracture

Medial joint line



  • Eversion ankle sprain
  • Deltoid ligament injury
  • Posterior tibialis tendon injury


  • PRICEMMMS
  • Ankle stirrup brace
  • Confirm ligament injury with corresponding provocative test
  • Osteochondritis dissecans is a “do not miss” diagnosis

Anterior joint line



  • Anterior capsule sprain
  • Anterior impingement
  • Anterior tibialis injury
  • Syndesmosis tear

Lateral joint line



  • Inversion ankle sprain
  • ATFL, CFL, PTFL tear
  • Peroneal tendon subluxation
  • Osteochondritis dissecans

ROM


Dorsiflexion



  • Anterior tibialis tendon


  • Test active, passive, and resisted ROM
  • Weakness can persist for years if no rehabilitation

Plantarflexion



  • Achilles tendon

Plantarflex eversion



  • Peroneal brevis tendon

Plantarflex inversion



  • Posterior tibialis tendon

PROVOCATIVE TESTS


Anterior drawer



  • ATFL tear


  • Compare to normal side; should be <10° difference
  • Indicates leg instability
  • Asymmetry may persist long after injury and be a clue to a prior old injury

Passive eversion



  • Deltoid ligament tear

Passive dorsiflex inversion stress test



  • CFL tear

Passive plantarflex inversion stress test



  • ATFL tear

Syndesmosis squeeze


OR


Passive dorsiflexion external rotation



  • High ankle sprain
  • Interosseous ligament injury
  • Tibiofibular ligament injury
  • Fracture


  • Ankle stirrup “air cast” compression worn 24 hr/d for 4 wk
  • If medial widening >4 mm between talus and medial malleolus → may require surgery

Peroneal tendon subluxation



  • Resisted dorsiflex eversion → attempt to push peroneal tendon over lateral malleolus


  • → Orthopedic consult





eFigure 24-1



Lateral view of the right ankle.





Ankle Sprain Grading



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Signs/ Symptoms


Grade I


Grade II


Grade III


Ligament tear


Minimal


Partial


Complete


Loss of function


Minimal


Some


Great


Pain


Minimal


Moderate


Severe


Swelling


Minimal


Moderate


Severe


Ecchymoses


No


Common


Yes


Weight-bearing


Normal


Partial


None





Knee Exam



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Exam


Potential Injury


Additional Testing/Management


PALPATION (TENDERNESS)


Swelling



  • If etiology unclear or Erythema, warmth → R/o septic joint with arthrocentesis
  • Intra-articular vs. localized
  • Hemarthrosis → fracture, ACL injury, patellar dislocation, bleeding disorder, meniscus


  • Arthrocentesis as indicated (not for acute hemarthrosis)
  • PRICEMMMS Identify and treat etiology (see below)

Patella



  • Patellar dislocation
  • Fractured patella


  • Patellar stabilizing brace with buttress

PALPATION (TENDERNESS)


Femoral condyle



  • Osteochondral fracture
  • OCD (most commonly medial)
  • Patellar dislocation (pain at adductor tubercle)


  • X-ray for diagnosis

Medial joint line



  • IT band (lateral)
  • MCL injury
  • Meniscus tear


  • Confirm meniscus tear with MRI MCL hinged knee brace
  • PRICEMMMS

Lateral joint line



  • Meniscus tear

Tibial tubercle



  • Osgood-Schlatter
  • Fracture


  • See section on fracture below

Pes anserinus bursa



  • Semitendinosus, sartorius, gracilis all insert at pes anserinus


  • Overuse injury; treat accordingly
  • Examine the hip

Gerdy’s tubercle



  • IT band tendonitis


  • Foam roller, PT, ICE
  • Examine the hip

ROM


Limited flexion



  • Meniscus tear
  • Intra-articular effusion


  • PT for stretching and passive range of motion exercises
  • Correlate with injury

Limited extension (+bounce home test)



  • Meniscus tear
  • Chondral contusion from hyperextension

PROVOCATIVE TESTS


Valgus stress: Twice, 0° and 30°



  • MCL injury
  • ACL tear if opens up at 0°


  • All treated with a hinged knee brace
  • Grade I: Tender, but no laxity on stress
  • Grade II: Laxity, but with firm end point
  • Grade III: No end point

Varus stress: Twice, 0° and 30°



  • Lateral collateral ligament of knee tear
  • Has natural laxity → compare with opposite side
  • Usually associated with PCL injury

Anterior drawer



  • ACL tear
  • Confirm with pivot shift
  • “Kissing contusion“ (femur and tibia) on MRI
  • May be associated with meniscus and MCL injury


  • Determine grade as I, II, or III
  • X-ray to r/o fracture
  • MRI → if ⊕ tear then consider orthopedic surgery consultation for repair, especially if meniscus tear also present
  • Strengthen hamstring
  • No sports until repaired and/or rehabilitated

Lachman


Posterior drawer



  • PCL injury; also look for sag


  • Can heal without surgery

PROVOCATIVE TESTS


McMurray/Modified McMurray



  • Meniscus tear


  • Non–weight-bearing
  • Hinged knee brace
  • MRI to confirm

Bounce home



  • Meniscus tear
  • MCL injury if pain along MJL

Apprehension test



  • Patellar dislocation


  • Vastus medialis oblique strengthening
  • Patellar stabilizing brace





eFigure 24-2



Lateral view of the right knee.





Shoulder Exam



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Exam


Potential Injury


Additional Testing/Management


PALPATION (TENDERNESS)


All shoulder evaluations should begin with a head and neck exam to rule out cervical nerve entrapment or radiculopathy to explain pain or weakness.


Clavicle



  • Fracture


  • Sling for 4 wk.
  • Weight training at 6-8 wk; no contact sports for 3 mo (see upper extremity section)
Acromioclavicular joint

  • Acromioclavicular separation


  • Graded 1–5.
  • Surgery for grade 4 or 5.
  • Sling as needed.

Scapula



  • Fracture


  • Ortho consult if fracture.

Anterior joint line



  • Anterior dislocation
  • Labral tear
  • Anterior impingement
  • Biceps tendonitis
  • Biceps rupture
  • Contusion


  • Correlate with history and provocative testing (see below)
  • Sling
  • PT

Posterior joint line



  • Posterior dislocation
  • Labral tear
  • Posterior impingement

Long head biceps



  • Biceps tendonitis
  • Biceps rupture
  • Contusion


  • Sling
  • Biceps strengthening
  • PT

ROM


Forward flexion: (normal 160°–180°)



  • Biceps
  • Anterior deltoid
  • Coracobrachialis
  • Pectoralis major


  • Shoulder joint similar to a large golf ball balanced on a small tee, providing wide ROM at the expense of stability
  • Perform active and resisted ROM
  • Perform passive ROM if ↓ active ROM
  • View from behind for aberrant “scapular dyskinesis” motion
  • Adolescents do not tear the rotator cuff unless there is a high-energy trauma
  • If limited painful ROM, consider adhesive capsulitis
  • If ↓ internal rotation, suspect posterior impingement
  • PT for recovery

Extension: (normal 40°–60°)



  • Triceps
  • Posterior deltoid
  • Teres major and minor

Abduction: (normal 160°–180°)



  • Supraspinatus, first 30°
  • Mid-deltoid, 30° to 90°
  • Serratus anterior
  • Trapezium, 90° to 180°

Internal rotation:



  • Subscapularis (at 0° abduction)
  • Anterior deltoid (at 0-80° abduction)
  • Pectoralis major (at 90° abduction, decreasing to 45°)

External rotation :



  • Infraspinatus (at 0° abduction)
  • Posterior deltoid (at 45-90° abduction)
  • Teres minor (at 90-110° abduction)

PROVOCATIVE TESTS


Hawkins impingement



  • Subacromial bursitis
  • Rotator cuff tendonitis


  • Relative rest, ice
  • Rotator cuff strengthening, PT
  • Treat scapular dyskinesis

O’Brien’s



  • Labral tear


  • MRI with intra-articular gadolinium

Speed’s



  • Long head biceps tendonitis


  • Rest, ice, strengthen

Cross arm adduction



  • Acromioclavicular separation
  • Acromioclavicular arthritis


  • Sling for 2–4 wk

Sulcus sign



  • Multidirectional instability


  • No contact sports
  • No over-the-head activity
  • Rotator cuff strengthening, PT
  • Sling, if needed
  • X-ray to check for Hill-Sachs/Bankart

Apprehension sign



  • Anterior subluxation
  • Anterior dislocation

Anterior instability


Fowler’s relocation



  • Posterior instability

Posterior subluxation






eFigure 24-3



Anterior view of the right shoulder.





Elbow Exam



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Exam


Potential Injury


Additional Testing/ Management


PALPATION (TENDERNESS)


The ulnar, median, radial, anterior interosseous, and posterior interosseous nerves are all at risk for compression at the elbow; therefore, a full neurological exam is important.


Lateral epicondyle



  • Lateral epicondylitis


  • See provocative test below

Medial epicondyle



  • Medial epicondylitis
  • Apophysitis
  • Fracture
  • UCL tear/injury


  • See provocative test below
  • X-ray, bilateral elbow
  • MRI with intra-articular gadolinium for UCL injury

Biceps tendon



  • Distal biceps rupture


  • Ortho consult

Olecranon



  • Fracture or apophysitis
  • Bursitis


  • X-ray

Supracondylar



  • Fracture


  • X-ray

Ulna



  • Fracture


  • X-ray

Radial head



  • Fracture
  • Subluxation (nursemaid’s)


  • X-ray
  • Reduce the radial head (subluxation)

Radius



  • Fracture


  • X-ray

Capitellum



  • OCD


  • X-ray

Ulnar gutter



  • Cubital tunnel syndrome


  • EMG, evaluate UCL

ROM

Pain with flexion

  • Biceps
  • Brachioradialis

Pain with extension



  • Triceps

Pain with supination



  • Biceps
  • Supinator
  • Lateral epicondylitis

Pain with pronation



  • Pronator teres
  • Pronator quadratus
  • Medial epicondylitis
  • Pronator mass syndrome

PROVOCATIVE TESTS


Valgus stress: Elbow at 15°–30° with arm abducted to 90°



  • UCL tear if opens, usually seen in baseball pitchers
  • ⊕ Milking maneuver


  • No pitching
  • MRI

Varus stress



  • Lateral ligament complex


  • Conservative management

Pain with:



  • Resisted wrist extension
  • Resisted extension 3rd digit
  • Passive wrist flexion
  • Resisted supination



  • Lateral epicondylitis


  • Counterforce elbow brace
  • Relative rest
  • Eccentric strengthening
  • Passive stretching
  • Consider injection of steroid, lidocaine, or platelet-rich plasma

Pain with:



  • Resisted wrist flexion
  • Passive wrist extension
  • Resisted pronation



  • Medial epicondylitis

⊕ Tinel’s sign



  • Cubital tunnel syndrome


  • PT

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Jan 9, 2019 | Posted by in PEDIATRICS | Comments Off on Orthopedics and Sports Medicine

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