Adolescent Orthopedics – Key Concepts and Clinical Principles

Introduction

Adolescent orthopedics represents a unique transitional phase between pediatric and adult musculoskeletal care.

During adolescence:

• Rapid skeletal growth occurs
• Hormonal changes influence bone and soft tissue physiology
• Injury patterns evolve as physes begin to close
• Sports participation and risk-taking behaviors increase

As a result, adolescent injuries often differ significantly from those seen in younger children or adults.

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Characteristics of Adolescence

Physiological Changes

Adolescence is characterized by:

• Rapid growth
• Hormonal fluctuations
• Emotional variability

These changes affect:

• Bone strength
• Coordination
• Injury susceptibility

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Peak Height Velocity

Growth accelerates rapidly during puberty before slowing toward skeletal maturity.

This phase is known as:

• Peak height velocity

Growth patterns are strongly influenced by genetics.

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Bone and Injury Characteristics

Unique Bone Properties

Adolescent bone differs from adult bone because it:

• Absorbs greater energy before failure
• Has partially open growth plates
• Demonstrates evolving biomechanical behavior

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Growth Plate Vulnerability

A key principle in adolescents is:

• Physes are weaker than ligaments

As a result:

• Adolescents are more likely to sustain physeal injuries
• Adults are more likely to sustain ligament injuries

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Influence of Physeal Closure

Injury patterns vary depending on:

• Degree of physeal closure
• Skeletal maturity

This explains why fracture patterns change throughout adolescence.

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Important Clinical Principle

Knee Pain May Originate from the Hip

In adolescents:

• Knee pain without trauma should always prompt evaluation of the hip

Important causes include:

• Slipped capital femoral epiphysis (SCFE)
• Hip pathology with referred pain

Missing hip pathology may delay diagnosis and worsen outcomes.

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Physeal Injuries

Distal Femoral Physeal Injuries

The distal femoral physis contributes approximately:

• 39% of total leg growth

Because of this, injuries in this region have high risk for growth disturbance.

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Common Injury Pattern

The most common pattern is:

• Salter-Harris Type II fracture

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Complications

Potential complications include:

• Limb shortening
• Angular deformity
• Growth arrest

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Follow-Up and Harris Growth Lines

Harris Growth Arrest Lines

These lines may appear after injury and help monitor growth recovery.

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Interpretation

Parallel Lines

Suggest:

• Normal symmetrical growth

Angulated Lines

Suggest:

• Abnormal growth
• Asymmetric physeal activity

Careful long-term follow-up is essential.

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Elbow Injuries in Adolescents

Common adolescent elbow injuries include:

• Supracondylar fractures
• Lateral condyle fractures
• Medial epicondyle fractures

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Important Clinical Concern

The adolescent elbow has high risk for:

• Stiffness
• Loss of motion

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Management Principles

Treatment should focus on:

• Stable fixation
• Early mobilization

to minimize stiffness and optimize function.

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Osgood-Schlatter Disease

Definition

Osgood-Schlatter disease is an overuse injury involving:

• Tibial tubercle apophysis

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Mechanism

Repeated traction from the patellar tendon causes:

• Inflammation
• Apophyseal irritation

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Important Surgical Principle

Avoid compressive fixation across the growth plate because it may lead to:

• Genu recurvatum deformity

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Stress Fractures

Common Population

Stress fractures are frequently seen in:

• Adolescent athletes

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Diagnostic Challenge

Early X-rays may appear normal.

More sensitive imaging includes:

• MRI
• Bone scan

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Bone Lesions in Adolescents

Many bone lesions are discovered incidentally after trauma imaging.

Important principles include:

• Correlate clinically
• Avoid unnecessary biopsy or surgery in benign lesions

Careful interpretation is essential.

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Ankle Injuries

Physeal Involvement

Ankle injuries in adolescents commonly involve:

• Growth plates

because physes remain weaker than surrounding ligaments.

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Imaging Considerations

Proper imaging is important to avoid missed injuries, particularly:

• Transitional fractures
• Tillaux fractures
• Triplane fractures

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Slipped Capital Femoral Epiphysis (SCFE)

Clinical Importance

SCFE is a major adolescent hip disorder that may lead to:

• Early osteoarthritis
• Femoroacetabular impingement
• Functional limitation

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Management

Corrective osteotomy may be required in selected patients with residual deformity.

Early diagnosis is critical.

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General Management Principles

Treatment Philosophy

Adolescents should not always be treated as small children.

Some injuries require:

• Adult-style fixation
• Rigid stabilization

depending on skeletal maturity.

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Key Goals

Treatment should aim for:

• Stable fixation
• Early motion
• Preservation of growth potential

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Importance of Follow-Up

All physeal injuries require long-term follow-up to detect:

• Growth arrest
• Angular deformity
• Limb length discrepancy

Early detection improves treatment options and outcomes.

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Key Takeaways

• Adolescents represent a unique musculoskeletal population.
• Growth plates are particularly vulnerable during this stage.
• Injury patterns evolve with skeletal maturity.
• Knee pain may originate from hip pathology.
• Stable fixation and early mobilization are essential in many injuries.
• Stress fractures may require advanced imaging for diagnosis.
• Careful follow-up is critical after physeal injuries.
• Early diagnosis and appropriate management prevent long-term deformity and disability.