Youth & Adolescent Injury Management

Complete Guide to Assessment & Treatment of Growing Athletes

Welcome to Youth Injury Management

🎯 Core Clinical Message

"The #1 mistake clinicians make is trying to treat youth injury and pain the same way they would an adult presenting with a similar condition. Kids are NOT little adults!"

📊 Why This Matters

  • Unique physiology: Children's tissues develop at different rates during growth
  • Peak Height Velocity (PHV): Critical vulnerability period for injury
  • Special considerations: Epiphyseal plates, apophyses, and growth cartilage
  • Different treatment approach: Age-appropriate interventions needed
  • Long-term impact: Proper management affects lifelong health and activity

📚 What You'll Learn

This comprehensive guide covers:

  • Growth and maturation physiology specific to injury risk
  • Critical red flags you cannot afford to miss
  • The F-words of effective pediatric rehabilitation
  • LTAD framework and age-appropriate interventions
  • Common conditions with evidence-based management strategies
  • Practical case studies across different age groups

Growth & Maturation Physiology

🦴 Bone Development

Early Childhood to Puberty (Age 4 to PHV):

  • Mass and length accumulate uniformly
  • Steady, predictable growth pattern

PHV to Mid-Adolescence:

  • Critical period: Long bone growth outstrips skeletal density deposition
  • Creates vulnerability window for unique injuries (greenstick fractures)
  • Peak bone deposition rate occurs 6-12 months AFTER PHV

⚠️ Peak Height Velocity (PHV)

The most important event in adolescent development

During PHV, the epiphyseal plate closes via ossification of cartilage. This creates vulnerability as long bone growth accelerates faster than other tissues can adapt.

Clinical Tip: Ask about recent rapid shoe size changes to identify if PHV may be associated with the presentation!

RED-S Alert: Failure to reach PHV in physique-sensitive sports (ballet, gymnastics) may indicate Relative Energy Deficiency in Sport.

🏃 Tendon & Ligament Development

  • Early childhood: Highly cellular environment with sparse collagen proteins
  • During growth: Cells respond to loading by increasing ECM protein composition
  • High stress areas: Musculotendinous junction (MTJ) and entheses/apophyses
  • Critical issue: Tendon tissue grows SLOWER than underlying bone
  • Result: Traction stress at apophysis during growth spurts

💪 Muscle & Neuromuscular Development

Pre-Puberty:

  • Limited hypertrophy response to mechanical loading (insufficient sex hormones)
  • Strength gains occur through neurological mechanisms
  • Repeated bout effect enhances neuromuscular control
  • Clinical implication: Focus on motor control and strength optimization, not hypertrophy

During PHV:

  • Often associated with coordination loss in athletic tasks
  • Athletes must re-learn movement with rapidly growing bodies
  • Increased acute injury risk if training demands not regressed

Post-Puberty:

  • Adequate sex hormones allow hypertrophy responses
  • Can emphasize periodized hypertrophy training
  • Important for joint stability (e.g., hypermobility management)

💡 Key Takeaway

Different tissues mature at different rates during growth. This differential development creates unique vulnerability periods and explains why adult treatment approaches are inappropriate for pediatric patients.

Things Not to Be Missed

Critical red flags that require immediate attention and potential referral.

🚨 The 5 "S" of Pediatric Red Flags

These are non-negotiable screening areas for every pediatric musculoskeletal assessment:

1️⃣ SYMPTOMS

Though common to have stress points during growth, symptoms at specific sites require investigation:

  • Epiphyseal plate pain
  • Apophyseal pain
  • Joint line pain without clear mechanism

2️⃣ SYSTEMIC

Anything beyond isolated single joint involvement:

  • Signs of infection (fever, malaise, widespread pain)
  • Involvement of multiple joints
  • Constitutional symptoms
  • CRITICAL: Septic arthritis is a common orthopaedic emergency in children!

3️⃣ SYMMETRY

While slight asymmetries are normal, obvious differences require attention:

  • Large leg length discrepancies
  • Significant spinal alignment differences
  • Unilateral growth abnormalities

4️⃣ SKELETAL DYSPLASIA

Abnormal bony growth patterns in young children:

  • Disproportionate growth
  • Abnormal bone shapes or alignments
  • Must be considered and referred appropriately

5️⃣ STIFFNESS

Joint stiffness without clear mechanical cause:

  • Juvenile arthritis
  • Other systemic inflammatory conditions
  • Morning stiffness lasting > 30 minutes

🚑 Pediatric Orthopaedic Emergencies

Salter-Harris Fractures

What: Fractures along or through the epiphyseal (growth) plate

Why it matters: Can impact bone growth and development

Presentation: May present as joint pain but consequences are far more serious

Action: Any suspected growth plate injury requires imaging and specialist referral

Slipped Capital Femoral Epiphysis (SCFE)

What: Displacement of the femoral head at the growth plate

Presentation:

  • Hip OR knee pain (or both)
  • Limp
  • Lack of or painful hip internal rotation

Action: IMMEDIATE orthopaedic referral - this is an emergency!

Spondylolysis / Spondylolisthesis

What: Stress fracture or displacement of vertebral structures

Red flag combination:

  • Pediatric back pain
  • PLUS change in training load
  • PLUS physique/weight-based sport with dietary restrictions
  • PLUS repetitive lumbar extension and rotation

Action: Flag for imaging and specialist assessment

Creating Effective Pediatric Interventions

🎯 Three Key Barriers to Overcome

Evidence-based methods to engage adolescent patients:

1. CAPABILITY

Definition: Physical and psychosocial ability to adhere to intervention

Solution:

  • Clear, appropriate education on HOW the intervention helps
  • Demonstrate HOW it can be carried out in the child's context
  • Ensure physical capability matches prescription

2. OPPORTUNITY

Definition: Unique logistical and environmental barriers children face

Solution:

  • Individualize prescriptions to meet the child's context
  • Consider school schedules, transport, supervision needs
  • Work with parents/caregivers as facilitators

3. MOTIVATION

Definition: Child's willingness to engage in rehab

Solution:

  • Realistic goal setting
  • Performance tracking they can see
  • Make the intervention ENJOYABLE

🎨 The "F Words" of Childhood Rehabilitation

Best practice framework for creating effective treatment plans:

🎯 FUNCTION

Principle: Kids won't do things that don't relate to what they want to do

Application:

  • Focus on function, not impairments
  • Explain how your intervention improves THEIR goals
  • Link exercises directly to activities they care about

👨‍👩‍👧‍👦 FAMILY / FRIENDS

Principle: Child's network are the primary facilitators

Application:

  • Involve parents/caregivers in treatment plan development
  • Educate the support network
  • Design interventions family members can help with

🏃 FITNESS

Principle: Childhood is critical for lifelong physical activity

Application:

  • Maintain the child's positive relationship with exercise
  • Keep them active during rehab (modify, don't eliminate)
  • Promote varied physical activity

🎮 FUN

Principle: Play-based intervention with therapeutic intent

Application - CRITICAL EXAMPLES:

  • Wall sits for Osgood-Schlatter's: Have them play patty-cake with mom or shoot hoops while holding - NOT boring timed isometric holds!
  • Balance exercises: Make it a game (how long can you be a flamingo?)
  • Strengthening: Competition with family members, ball games, challenges

You're more likely to get the required dosage if it's FUN than if it's boring!

✅ Key Takeaway

A rehab intervention for a child should be based around play and enjoyment with the secondary side effect of the intended intervention. Design your rehab this way for maximum adherence and effectiveness!

Long Term Athletic Development (LTAD) Framework

Simplifies advice around appropriate physical activity types and intensities.

⚠️ Debunking the 10,000 Hour Rule

Early specialization and high training volumes:

  • Leads to relatively LOWER number of high-performing athletes
  • Increases incidence of overuse injuries
  • Causes sporting burnout

Multi-sport athletes focused on play-based development have better performance and less injury risk!

📏 General Training Rules

  • Training hours per week ≤ Patient's age in years
  • Encourage non-structured play (associated with less overuse injury)
  • Minimum 12-week off-season from structured sports training
  • Kids allowed to be kids rarely push themselves to overuse injury
  • Risk increases with forced high-repetition structured training

🎨 FUNdamental

Age: 6-10 years

Focus: Learn prerequisite movement patterns

  • Squat, lunge, run, jump/land
  • Strike, roll, throw, hit
  • Structured & unstructured play
  • Max intensity: 15RM
  • Body weight manipulation

Rehab: Fun, play-based, targeting specific conditions

⚠️ Sports specialization = overuse injury risk

📈 Train to Train

Age: 10-13/14 years

Focus: Build capacity in fundamental movements

  • Improve general physical condition
  • May need to regress during PHV
  • Can introduce external resistance (10-15RM)
  • Some sports specificity appropriate

Rehab: Age-appropriate resistance, address PHV coordination changes

🏆 Train to Compete

Age: 13/14-17/18 years

Focus: Sport-specific development

  • ~50% sport-specific training
  • Moderate to high intensities (8-15RM)
  • Exception: highly technical lifting
  • Individualized periodization

Rehab: Sport-specific protocols, progressive loading

🥇 Train to Win

Age: 17/18+ years

Focus: Performance optimization

  • Complete sports specialization
  • Body mostly matured
  • Few considerations different from adults
  • Built through all requisite stages

Rehab: Adult protocols appropriate

🎯 High-Performance Youth Specialist Categories

For managing training stress in specialized young athletes:

1. Load Sensitive Athletes

High-performing specialists showing consistent intolerance to specific training stress

Management: Progress rehab and training loads with CAUTION

2. Load Naive Athletes

High-performing specialists with low training ages and skeletal immaturity

Management: Avoid spikes in rehab/training loads until skeletally mature

3. Load Tolerant Athletes

Skeletally mature OR history of training at/above 1 hour/year of age

Management: Standard progression, monitor psychological tolerance

Common Pediatric Conditions

🦴 APOPHYSITIS (Most Common Group)

Pathophysiology

Rapid long bone growth around PHV causes traction stress on proximal or distal tendon attachments

Treatment Principles

  • Relative rest from aggravating conditions (cyclical, moderate-high load contractions at long lengths)
  • Short course NSAIDs (if prescribed by MD)
  • Maintain strength, fitness, and meaningful activity within pain-free limits
  • CRUCIAL: Keep them active in modified ways!

Prognosis

  • Generally good: acute resolution within weeks to 2 months
  • Recurrence common until apophysis fuses
  • WARNING: "Playing through pain" risks acute avulsion fracture!
  • Osgood-Schlatter's: 50% still symptomatic years post-diagnosis

🦶 Iselin Disease

Location: 5th metatarsal

Cause: Peroneal muscles traction (brevis & tertius)

Treatment:

  • Stiff soled shoe or moon boot
  • Pain-free foot/calf strengthening
  • Activity modification

🦵 Sever's Disease

Location: Calcaneal tuberosity

Cause: Achilles tendon & plantar aponeurosis traction

Treatment:

  • Taping, heel cups, heel raises
  • Orthosis if severe
  • Progressive calf strengthening/lengthening

🦵 Osgood-Schlatter / Larsen Johansson

Location: Tibial tuberosity / inferior patella pole

Cause: Patella tendon traction from jumping

Treatment:

  • Quadriceps strengthening/lengthening
  • Long-term capacity building plan
  • NOT always self-limiting!
  • 50% have symptoms beyond apophysis closure

🏃 Hip/Pelvis Apophysitis

7 Possible Sites:

  • Ischial tuberosity (hamstrings/add magnus)
  • Pubic symphysis (adductors)
  • Lesser trochanter (iliopsoas)
  • Greater trochanter (glutes)
  • Iliac crest (glutes)
  • AIIS (rectus femoris)
  • ASIS (sartorius)

Sports: High-speed running, dancing, kicking, change of direction

⚠️ Higher avulsion risk due to impulse forces

⚾ Little Leaguer's Elbow

Location: Medial epicondyle

Cause: Forearm flexor traction during throwing

Prevention:

  • Limit pitch counts
  • Avoid high-speed pitching in youth
  • Don't pitch and catch in same game

Treatment: Progress through plyometric continuum

⚠️ High avulsion risk

🩺 OSTEOCHONDROSIS (Rare but Important)

Cause: Temporary disruption to blood supply (not traction)

Key features: Always atraumatic, often after overuse period, boys 4-5x more likely

Legg-Calvé-Perthes Disease (Most Common)

Location: Femoral head chondral surface and subchondral bone

Age: Most common 4-8 years, males 5:1

Presentation: Hip and knee pain, limp, tendency toward femoral internal rotation

Four Healing Stages:

  1. Initial (weeks-months): Vascular insufficiency, sclerotic changes, bone/labral edema
  2. Fragmentation (6mo-1yr): Damaged bone removal, femoral head flattening
  3. Reconstitution (<3yrs): Dead bone cleared, head reforms
  4. Residual (3+yrs): Bone healed (often imperfectly shaped)

⚠️ ~50% will develop OA and need hip replacement in their 50s

Clinical Rule: Child 4-8 years with hip/knee pain + limp ± femoral internal rotation = Treat conservatively as LCPD until proven otherwise!

Other Osteochondrosis:

  • Freiberg disease: Metatarsal head
  • Köhler bone disease: Navicular
  • Panner disease: Capitulum of humerus

Treatment & Prognosis

  • Require frequent, close monitoring with repeated imaging
  • Generally self-resolve over time
  • If symptoms persist >6 months with relative rest → ortho referral
  • Early conservative treatment = better outcomes
  • Continued loading worsens final bone healing

🦴 BONE STRESS INJURIES

Prevalence: Up to 21% in lower limb and lumbar spine

Risk Factor "Perfect Storm"

  • Increased training loads of repetitive tasks
  • Relative energy deficiency (RED-S)
  • Biomechanical/neuromuscular changes during PHV
  • Sport-specific risk factors (e.g., tall + high bowling load in cricket)

Presentation

  • Gradual onset
  • Pain on weight bearing
  • Pain with joint ROM
  • Tenderness to palpation and vibration
  • Signs of inflammation (if superficial)

Treatment (Multidisciplinary Approach)

ALWAYS require relative rest/load reduction

Address BOTH sides of stress-recovery equation:

  • Stressor side: Load management, technique modification, strengthening
  • Recovery side: Dietary optimization, sleep/stress management

Prognosis

  • Average RTP: 12-13 weeks
  • Range: 6-30 weeks (depends on location/severity)
  • Younger from epiphyseal closure = faster healing
  • Average epiphyseal closure: 14 years (girls), 16 years (boys)

Most Common Sites:

  • 40.3% - Lower leg (tibial stress injuries)
  • 34.9% - Foot (metatarsal stress injuries)
  • 15.2% - Lumbar spine/pelvis (pars stress injuries, pubic symphysis)

💪 SOFT TISSUE & NON-SPECIFIC CONDITIONS

Management has relatively few pediatric-specific considerations

Key Considerations

  • PHV impact: Consider effects on biomechanics and neuromuscular control
  • Focus: Help child regain strength/control of rapidly growing body
  • Modification: Temporarily modify sport involvement (don't eliminate!)

⚠️ Important Note on Anterior Knee Pain

Adolescent anterior knee pain is NOT as innocuous as expected:

  • Many adolescents still experiencing nonspecific AKP up to 5 years post-diagnosis
  • Not as self-limiting as previously thought
  • Requires proper management and long-term follow-up

✅ Prevention Strategy

A good, age-appropriate S&C program doubles as effective injury prevention:

  • Duration: 10-15 minutes
  • Frequency: 2-3 times per week
  • Effectiveness: Proven across multiple sports

Case Study: Osgood-Schlatter Disease Across LTAD

How management changes based on age and developmental stage

Case 1: 8 Years Old (Pre-PHV)

Stage: FUNdamentals

Activity Modification

Couple weeks out of sports training. Continue playing with friends/family - anything that doesn't hurt!

Strength

  • Wall sits: No prescribed volume - make it a game!
  • Examples: How many footy passes? Basketball shots? Balloon keep-ups?
  • Involve family/friends for motivation
  • Teach bodyweight squat movement pattern

Lengthening / Stretching

"Gamify" the position:

  • "Pretend to be a flamingo" (standing quad hold)
  • "Next time let's see how long you can do that compared to [family member]"

Sport-Specific / Neuromuscular

  • Play-based landing technique drills
  • Example: Child on seat with beanbags (hatching eggs), throw ball above to catch, quickly but gently sit back to eggs
  • Continue low volume/low load sport-specific running/passing drills

Case 2: 14 Years Old (Post-PHV)

Stage: Train to Train

Activity Modification

Continue some sport training - just not sprinting or long running drills. Keep other play-based activities with friends and cross-training as long as pain-free.

Strength

  • Wall sits: Set specific time targets to aim for
  • Begin loading squat with goblet squat variation
  • Set up external cues for desired biomechanics
  • Teach hip hinge to deload knee

Lengthening / Stretching

  • Teach quad stretch and explain importance
  • Set target times to attain

Sport-Specific / Neuromuscular

  • Gamify altitude landings and snapdowns (reaction ball catching drills)
  • Target undesired biomechanics with ball drills or perturbation drills in athletic positions

Case 3: 16 Years Old (Post-PHV)

Stage: Train to Compete

Activity Modification

Modified specific training - no high intensity/volume lower limb. Use other cross-training modalities (swim, bike) to maintain conditioning.

Strength

  • Consider high-tempo strength training protocols for quads
  • Modify training volume loads to greater focus on hip hinges

Lengthening / Stretching

  • Consider readiness to implement eccentric loading
  • Example: Reverse Nordics alongside stretching

Sport-Specific / Neuromuscular

  • Work on sport-specific positions and plyometrics continuum
  • Gamify undesired biomechanics drills (ball drills, perturbation drills in athletic position)

Case 4: 18 Years Old - Acute on Chronic

Stage: Train to Win

Activity Modification

As per 16-year-old case. Modified specific training, cross-training to maintain conditioning.

Strength

  • As per above but likely increased intensity
  • Adult-level strength protocols appropriate
  • Periodized programming

Lengthening / Stretching

  • As above - eccentric loading programs
  • Sport-specific flexibility requirements

Sport-Specific / Neuromuscular

  • Work on sport-specific positions and plyometrics continuum
  • Advanced movement pattern refinement
  • Performance-specific programming

🎯 Key Takeaways from Case Studies

  • Progression is age-appropriate: From play-based to structured protocols
  • Intensity increases with maturity: From bodyweight to loaded exercises
  • Specificity increases over time: From general movement to sport-specific
  • Education level adapts: From "gamifying" to explaining biomechanics
  • Always maintain activity: Modify, don't eliminate physical activity!

Knowledge Check

Test your understanding of youth and adolescent injury management

Question 1: Peak Height Velocity

What is the most reliable clinical sign that PHV may be associated with the presentation?

Question 2: Red Flags

A 6-year-old presents with hip and knee pain, a limp, and painful/limited hip internal rotation. What should you suspect?

Question 3: F-Words of Rehabilitation

For an 8-year-old with Sever's disease needing calf strengthening, which approach best follows the F-words framework?

Question 4: LTAD Framework

What is the maximum recommended training hours per week for a 12-year-old athlete?

Question 5: Apophysitis Management

What is the typical prognosis for most apophysitis conditions?

Question 6: Growth Plate Injuries

Why are Salter-Harris fractures particularly concerning in pediatric patients?

🎓 Completion Certificate

Congratulations on completing this learning module on Youth & Adolescent Injury Management!

You've covered:

  • ✓ Growth and maturation physiology
  • ✓ Critical red flags and emergency conditions
  • ✓ Evidence-based treatment principles
  • ✓ The LTAD framework for age-appropriate intervention
  • ✓ Common pediatric conditions and their management
  • ✓ Practical case study applications

Remember: Kids are NOT little adults. Tailor your approach to their unique physiology, psychology, and developmental stage!