the limping child christopher m. prior, do maj, mc, usa primary care sports medicine
TRANSCRIPT
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The Limping Child
Christopher M. Prior, DO
MAJ, MC, USA
Primary Care Sports Medicine
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Studying can be Hazardous
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Objectives
• Review gait types
• Proper Work Up:– Potential etiologies– Use age to narrow differential– Thorough History and Physical– Appropriate Test
• The Fab Five
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Basics of Gait Types• Asymmetric Deviation from the normal gait• Normal gait pattern:
– 60% stance – 40% swing
• Increased time in the swing phase to avoid bearing weight on the injured extremity
• By age 3 most kids have an adult gait pattern
TrendelenbergWaddling
Stiffed LegAntalgic Gait
StoopedToe Walking
SteppageSlow deliberate
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Objectives
• Review gait types
• Proper Work Up:– Potential etiologies– Use age to narrow differential– Thorough History and Physical– Appropriate Test
• The Fab Five
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Etiologies of the Limping Child• Trauma:
– Fracture (Stress, Toddlers’) Soft Tissue, Ankle Sprain, Foreign Body, Ingrown toe nail
• Tumor:– Spinal Cord, Bone
(Benign & Malignant), Lymphoma, Leukemia
• Infection:– Cellulitis, Osteomyelitis,
Septic Arthritis, Lyme Disease, TB, GC, Postinfectious Reactive Arthritis
• Inflamatory:– Juvenile Rheumatoid
Arthritis, Transient Synovitis, Systemic Lupus Erythrematosis
• Congenital:– Hip Dysplasia, Sickle Cell,
Short Femur, Club Foot• Developmental:
– Legg- Calve-Perthes Disease, Slipped Capital Femoral, Epiphysis, Tarsal Coalition, Osteo Chondral Defect, Neurologic
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Etiologies of the Limping Child• Trauma:
– Fracture (Stress, Toddlers’) Soft Tissue, Ankle Sprain, Foreign Body, Ingrown toe nail
• Tumor:– Spinal Cord, Bone
(Benign & Malignant), Lymphoma, Leukemia
• Infection:– Cellulitis, Osteomyelitis,
Septic Arthritis, Lyme Disease, TB, GC, Postinfectious Reactive Arthritis
• Inflamatory:– Juvenile Rheumatoid
Arthritis, Transient Synovitis, Systemic Lupus Erythrematosis
• Congenital:– Hip Dysplasia, Sickle
Cell, Short Femur, Club Foot
• Developmental:– Legg- Calve-Perthes
Disease, Slipped Capital Femoral, Epiphysis, Tarsal Coalition, Osteo Chondral Defect, Neuro
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Juvenile Rheumatoid ArthritisToxic SynovitisLegg-Calve-PerthesSlipped Capital Femoral
EpiphysisAvascular necrosisOveruseTarsal Coalition
Septic ArthritisOsteomyelitisCellulitisStress FractureNeoplasmNeuromuscularGC Arthritis
Septic HipHip dysplasiaOccult FractureLength Discrepancy
Potential Etiologies
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Objectives
• Review gait types
• Proper Work Up:– Potential etiologies– Use age to narrow differential– Thorough History and Physical– Appropriate Test
• The Fab Five
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Age Related Etiologies of the Limping ChildAll AgesAll Ages 0-3 Yrs 4-10 Yrs 11-16 Yrs
Septic Arthritis Septic Hip JRA SCFE
Osteomyelitis Hip dysplasia
Toxic Synovitis
AVN
Cellulitis Occult Fracture
Legg-Calve-Perthes
Overuse
Stress Fracture Length Discrepancy
Tarsal Coalition
Neoplasm GC Arthritis
Neuromuscular
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All AgesSeptic ArthritisOsteomyelitis
CellulitisStress Fracture
NeoplasmNeuromuscular
0-3 YearsSeptic Hip
Hip dysplasiaOccult Fracture
Length Discrepancy
4-10 YearsJRA
Toxic SynovitisLegg-Calve-Perthes
11-16 YearsSCFEAVN
OveruseTarsal Coalition
GC Arthritis
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Objectives
• Review gait types
• Proper Work Up:– Potential etiologies– Use age to narrow differential– Thorough History and Physical– Appropriate Test
• The Fab Five
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Proper Work Up:History
• Onset and Type of Pain– Improving/Worsening– Worse in morning or evening
• Ambulatory or not– If younger, will the child crawl
• Review of systems– Recent illness– Birth and Family History
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Physical Exam
• Walk on toes, heels, hop, and run
• Feet for claw toes or cavus feet
• Deep tendon reflexes and clonus
• HIP EXAM-ROM & SPECIAL TESTS
• Skin and GU/Abdominal Exam
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Limp: Back
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Hip Exam• Position of maximum volume and least
pressure: Flexion, Abduction, Ext Rotation• Decreased Internal Rotation suggest Hip
Pathology• Place Patient Prone and Compare
(most sensitive test)
or log roll
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Limp: Knee
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Limp: Feet
Pes Planus Pes Cavus
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Objectives
• Review gait types
• Proper Work Up:– Potential etiologies– Use age to narrow differential– Thorough History and Physical– Appropriate Test
• The Fab Five
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Appropriate Tests: Labs
• CBC If more than 2 cell lines down consider malignancy
• C-Reactive Protein &/or ESR
CRP More Sensitive and Earlier• Joint Fluid Cell Count (>50K=infection) and
Culture pos 36% - 79%• Blood Culture Partial Treatment with Antibiotics
+ 50%• Lyme Titers/ANA/ RF/HLA
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Appropriate Test: Radiology
• Radiographs– Lateral– Frog
• Ultrasound– Fluid collections– Aspiration and Injection
• Bone Scan
• Ortho Consult
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Take Study “BRAKES”
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Objectives
• Review gait types
• Proper Work Up:– Potential etiologies– Use age to narrow differential– Thorough History and Physical– Appropriate Test
• The Fab Five
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The Fab Five
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Five Etiologies of Limp
• Growing Pains 12-16 years old
• Legg-Calve-Perthes Disease 4-10 years old
• Slipped Capital Femoral Epiphysis 11-16 years old
• Toxic Synovitis4-10 years old
• Septic ArthritisAny age
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Growing Pains
• Reported affect 40-80 %
• Leg Pain is Bilateral, nocturnal
• Etiology
• More common in males
• Supportive treatment, relative rest
• No long term sequelae
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Legg-Calve-Perthes Disease
• “Painless Limp” caused by AVN of femoral head
• Symptoms may be referred to thigh and knee
• Unknown etiology-but there is interrupted blood supply of femoral epiphysis
• 5:1 Male Predominance
• Usually 4-8 years to age
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Legg-Calve-Perthes Disease
• Treatment Key is to containment of femoral epiphysis in acetabulum
• If <50% Femoral Head involved Observation
• If >50% Femoral Head involved cast, brace or operate
• All suspected and confirmed cases should be referred
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Legg Calve Perthes-Various Xrays
Crescent sign
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Slipped Capital Femoral Epiphysis
• Slippage of Proximal Femoral Epiphysis on the Femoral Neck through the Physeal Plate
• Occurs during Adolescent Growth Spurt
• Most Common Hip Disorder of Adolescents (2 /100K)
• Symptoms to Diagnosis 10 months
• Missed on initial exam up to 50 %
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Slipped Capital Femoral Epiphysis
• Male/Female 1.5/1• Usually Obese or Tall Thin adolescents• More Common in Blacks and Polynesians• Only 25% w history of Trauma• Occurs 25-40% Bilaterally
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Slipped Capital Femoral Epiphysis• Stable 90% vs. Unstable 10%
• Exam- Decreased Internal Rotation & Obligate Ext Rotation w Hip Flexion
• If severely limited Active ROM, do not test passively until X-rays obtained (may displace epiphysis even further-may need X-table lateral)
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Slipped Capital Femoral Epiphysis
Surgical Pinning
Klein’s Line on AP
Frog Leg
Normal Abnormal
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Toxic Synovitis
• Most Common Cause of Hip Pain under 10• Diagnosis of Exclusion• Etiology unknown (? Post-viral)• Males 2:1 predominance• Treatment is Supportive• Late Sequelae:
– Coxa Magna– Legg-Calve-Perthes disease– Degenerative cystic changes of femoral neck
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Septic Arthritis vs Toxic Synovitis
• Hip is most common joint involved in Septic Arthritis
• There is frequently a Hx of Trauma and or URI
• Most Common etiologies are S. aureus and Strep species (H. influenza is rare now due to Hib vaccine)
• Also get Blood Cultures if Septic Arthritis is considered
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Septic Arthritis vs Toxic Synovitis
WBC (>12K) 15K 9K
Refusal to Bear Weight 95% 35%
Fever (>37.5°C) 82% 8%
ESR (20mm) 51mm 21mm
• 3 out of 4 Mandates Aspiration• Be Wary if Partially Treated w/ Oral Antibiotics
Septic Arthritis
Toxic Synovitis
Kocher, et. al J Bone Jt Surg Dec 98
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Conclusion
• Remember Age Specific Diagnosis
• Always Consider Infection and Neoplasm
• Strongly Consider CBC, CRP &/or ESR
• Temp 38°C (100°F)/ESR >20 = Tap Hip
• Frog and lateral X-Ray
• Decreased Internal Rotation is Bad
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A patient with which one of the following should raise suspicion of septic arthritis?1) ESR of 5mm/hr
2) Temp > 37.5°C (99.5°F)
3) Bilateral hip pain radiating to the knee
4) Bilateral wrist and knee pain
Questrion #1
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Question #2
11 yo male with hip pain comes to office, on examination his right hip externally rotates every time you flex his hip. This presentation is most consistent with a diagnosis of:
1) Slipped Capital Femoral Epiphysis
2) Developmental Dysplasia of the Hip
3) Duchene’s Muscular Dystrophy
4) Juvenile Rheumatoid Arthritis
5) Transient Synovitis
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Question #3
• How can you narrow down the work up a patient with a limp?
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All AgesSeptic ArthritisOsteomyelitis
CellulitisStress Fracture
NeoplasmNeuromuscular
0-3 YearsSeptic Hip
Hip dysplasiaOccult Fracture
Length Discrepancy
4-10 YearsJRA
Toxic SynovitisLegg-Calve-Perthes
11-16 YearsSCFEAVN
OveruseTarsal Coalition
GC Arthritis
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Thank You