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Health condition · Clinically reviewed

Growth plate injuries, the weakest part of the growing skeleton, explained clearly.

A practical hub for parents and young athletes - covering fractures, apophysitis, SCFE, Perthes and the red flags that should never be missed.

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Why trust this guide

  • 01

    Clinically reviewed

    Written by our editorial team and reviewed by a UK paediatric orthopaedic clinician before publication.

  • 02

    Sourced from guidance

    Checked against NICE, BOA/BSCOS and peer-reviewed sources you can see at the end.

  • 03

    Current for 2026

    Reflects modern UK paediatric orthopaedic practice, including SCFE pathways, Perthes care and safeguarding standards.

Key facts

Growth plate injuries at a glance.

The essentials for parents, coaches and young patients - what the physis is, which conditions belong here and why they matter.

  • What it is

    A hub of conditions affecting the physis, the cartilage growth plate at the ends of long bones - the weakest part of the growing skeleton.

  • Who it affects

    Children and adolescents - peak risk during the growth spurt, when bone lengthens faster than tendons and ligaments adapt.

  • Main categories

    Fractures (Salter-Harris), overuse and stress, apophysitis, SCFE, Perthes, Blount, fibrous dysplasia, infection, tumours and non-accidental injury.

  • Why it matters

    Damage to the physis can affect future growth - limb-length discrepancy or angular deformity if missed or mismanaged.

  • Common presentation

    Activity-related pain, swelling, a limp, reduced sporting function and, less commonly, visible deformity or growth concerns.

  • Team

    Paediatric orthopaedics, paediatric physiotherapy, radiology and, when needed, oncology, infectious diseases and safeguarding.

Why this guide matters

Children are not small adults.

The growth plate changes everything - it dictates how injuries behave, how they heal and what has to be watched afterwards.

  • The physis is the weakest link

    Where an adult would sprain a ligament, a child often fractures the growth plate - the same mechanism, a different injury.

  • Some things need same-day action

    SCFE, septic arthritis, osteomyelitis and vascular compromise can't wait - a child with these findings needs urgent hospital review.

  • Overuse dominates modern paediatric sport

    Year-round training and early specialisation drive apophysitis and stress injuries - manage load, and most settle without lasting harm.

How the diagnosis is made

From first pain to a clear plan.

The steps a UK GP, paediatric emergency team or orthopaedic clinic will normally follow - so families know what to expect and why.

  1. 01

    Assessing

    History and safeguarding

    Mechanism, sport, training load, growth spurt, night pain, systemic symptoms and any concerns about how the injury happened.

  2. 02

    Assessing

    Focused examination

    Joint above and below, neurovascular status, gait, limb length, alignment and growth parameters.

  3. 03

    Assessing

    Plain X-ray

    First-line imaging - comparison views of the other side are often useful in children.

  4. 04

    Confirming

    MRI for occult injury

    For persistent pain with normal X-rays, suspected stress reactions, Perthes, tumours or infection.

  5. 05

    Confirming

    Bloods and cultures

    Inflammatory markers, blood cultures and joint aspiration when infection is possible - septic arthritis is a paediatric emergency.

  6. 06

    Preparing

    Paediatric orthopaedic input

    For SCFE, Perthes, displaced Salter-Harris fractures, angular deformity or suspected tumour - specialist commissioned care.

  7. 07

    Preparing

    Physiotherapy plan

    Load management, biomechanics and graded return to sport for apophysitis and overuse presentations.

Typical timeline: an urgent presentation seen the same day; overuse presentations reviewed over 2 to 4 weeks.

Symptoms

What growth plate injuries look like.

Activity-related pain, a limp and reduced sporting function are common - the trick is spotting the presentations that need same-day action.

  • Activity-related pain

    Pain that predictably follows training or competition - the hallmark of apophysitis and stress-related injury.

  • Focal swelling and tenderness

    Over a specific growth plate or apophysis - tibial tuberosity, medial epicondyle, calcaneus or 5th metatarsal.

  • Limp or altered gait

    A new limp in a child always deserves a look - hip pain often refers to the knee, especially in SCFE and Perthes.

  • Reduced range of movement

    Loss of internal rotation of the hip is a classic feature of both SCFE and Perthes disease.

  • Visible deformity or limb-length change

    Angular deformity (Blount, healed physeal injury) or a shortening leg deserves prompt specialist review.

  • Night pain and systemic symptoms

    Fever, weight loss, sweats or persistent unexplained night pain are red flags for tumour or infection.

  • Growth concerns

    Parents often notice a leg looking shorter, a foot turning in or a knee angling - always worth an assessment.

  • Red flag - unusual injury pattern

    Injuries out of keeping with the story, or repeated presentations - safeguarding assessment is essential.

The 10 categories

What can go wrong at the growth plate.

Growth plate problems break down into ten broad groups - the mechanism differs, but they share the physis as a common target.

  • 01

    Fractures (Salter-Harris)

    Traumatic fractures through the physis, graded I to V. Most heal well - some risk growth arrest. See /conditions/growth-plate-fractures/.

  • 02

    Overuse and stress injuries

    Little League shoulder and elbow, gymnast wrist and sports-specific stress reactions. Medial epicondyle apophysitis is covered at /conditions/epicondylitis/.

  • 03

    Apophysitis

    Osgood-Schlatter (tibial tuberosity - see /conditions/osgood-schlatter-disease/), Sever's (calcaneal), Sinding-Larsen-Johansson (patellar) and Iselin's (5th metatarsal).

  • 04

    Slipped capital femoral epiphysis (SCFE)

    Adolescent hip emergency - the femoral head slips off the growth plate. Urgent orthopaedic surgery.

  • 05

    Perthes disease

    Legg-Calve-Perthes disease - avascular necrosis of the femoral head in young children. Specialist paediatric orthopaedic care.

  • 06

    Blount disease

    A growth disorder of the medial proximal tibia causing progressive tibia vara (bow legs) - infantile and adolescent forms.

  • 07

    Fibrous dysplasia

    A rare bone-forming disorder replacing normal bone with fibrous tissue - managed by specialist commissioned services.

  • 08

    Infection

    Septic arthritis and osteomyelitis - paediatric emergencies with fever, refusal to move a limb and raised inflammatory markers.

  • 09

    Tumours

    Benign lesions (osteochondroma, non-ossifying fibroma) and rare malignancies - osteosarcoma (see /conditions/bone-cancer/) and Ewing sarcoma (see /conditions/ewing-sarcoma/).

  • 10

    Child protection

    Unusual fracture patterns, injuries out of keeping with the story or repeated presentations - safeguarding always sits alongside the medical assessment.

Treatment

How growth plate injuries are managed.

Treatment is condition-specific - load management for overuse, urgent surgery for SCFE, specialist commissioned care for tumours and infection.

  • Activity modification

    The cornerstone for apophysitis and overuse - reduce provocative training, keep general fitness, return gradually as symptoms settle.

  • Physiotherapy

    Load management, flexibility and strength around the affected area - see /treatments/physio-clinic/.

  • Orthotics and footwear

    Heel cushioning for Sever's, arch support for foot apophysitis or malalignment - see /treatments/custom-orthotics-clinic/.

  • Immobilisation

    Cast, splint or boot for undisplaced Salter-Harris fractures or severe apophysitis flares - short, purposeful and time-limited.

  • Paediatric fracture fixation

    Displaced physeal fractures may need reduction and fixation - see /treatments/paediatric-fracture-fixation/.

  • Urgent surgery for SCFE

    In situ pinning of the slipped femoral head - the standard of care and time-critical to protect the hip.

  • Perthes-specific management

    Containment, physiotherapy and, in selected cases, surgery - led by specialist paediatric orthopaedic services.

  • Specialist commissioned care

    Bone tumours, fibrous dysplasia and complex physeal problems are managed within regional paediatric services.

What this guide is based on

The sources behind every claim on this page.

UK national guidance and specialist paediatric orthopaedic standards, current at the time of last review.

Key references

Guidelines and standards we relied on.

A quiet reminder

This guide is for information, not medical advice.

Your GP or paediatric orthopaedic team knows your child and can tell you which parts apply. If in doubt, get seen.

  • NICE. Fractures (non-complex): assessment and management (NG38).

  • British Society for Children's Orthopaedic Surgery (BSCOS). Consensus statements on SCFE and Perthes disease.

  • British Orthopaedic Association (BOA). Standards for children's trauma care (BOAST).

  • Royal College of Paediatrics and Child Health (RCPCH). Safeguarding standards and child protection companion.

Red flags

When a growth plate problem needs urgent attention.

Most paediatric musculoskeletal problems settle. These are the situations that don\'t - and where a specialist opinion cannot wait.

  • Suspected SCFE

    An adolescent with new hip, thigh or knee pain and a limp - especially if overweight or in the growth spurt. Non-weight bearing and urgent orthopaedic assessment.

  • Septic arthritis

    A hot, painful, unwillingly-moved joint with fever - a paediatric emergency needing same-day hospital assessment, bloods, aspiration and antibiotics.

  • Osteomyelitis

    Persistent bone pain, tenderness, fever or a raised limp - requires paediatric admission, imaging and IV antibiotics.

  • Suspected bone tumour

    Persistent night pain, unexplained mass, weight loss or an unusual X-ray - urgent referral to a specialist paediatric orthopaedic oncology service.

  • Non-accidental injury

    Injuries that don't match the story, multiple fractures at different stages, delayed presentation or unexplained bruising - safeguarding takes priority.

  • Compartment syndrome

    Increasing pain out of proportion, pain on passive stretch, tight limb after injury or plaster - a surgical emergency.

  • Neurovascular compromise

    Pale, cold, pulseless or numb limb after injury - immediate emergency care.

  • Progressive angular deformity

    A visibly worsening bow or knock-knee in a young child - consider Blount disease or a growth arrest and refer.

  • Systemic illness in a limping child

    Fever, malaise, weight loss or night sweats with musculoskeletal pain - infection, malignancy or inflammatory disease must be excluded.

Living with it

A treatable set of problems, with a clear plan.

Four principles that make the biggest difference day to day - manage load, be patient with apophysitis, follow up growth and look after the child, not just the injury.

A quiet reminder

Growing bodies need patience, not punishment.

Rest is not the enemy of sport - it is often what allows the child to keep playing for the next decade.

  1. 01 Load

    Manage the training load

    Most adolescent overuse injuries are load-management problems - reduce provocative sessions, keep skills and fitness, rebuild gradually.

  2. 02 Patience

    Apophysitis takes months, not weeks

    Osgood-Schlatter, Sever's and Sinding-Larsen-Johansson usually settle with time and sensible activity - flares are normal on the way down.

  3. 03 Follow-up

    Growth still matters

    After a physeal fracture, orthopaedic follow-up watches for growth arrest, angular deformity and limb-length change.

  4. 04 Support

    It is not just physical

    Time out from sport hits identity and mood - keep the child connected to their team, coach and friends during recovery.

Frequently asked

Everything we get asked about growth plate injuries.

Quick answers on Salter-Harris fractures, apophysitis, SCFE, Perthes and the red flags to watch for.

  • What is a growth plate injury?

    A collective term for anything that affects the physis - the cartilage growth plate at the end of a child's long bone. It includes fractures through the plate, overuse of the nearby apophysis, slipped capital femoral epiphysis, Perthes disease, Blount disease, infection and tumours. Because the physis is the weakest part of the growing skeleton, injuries here can affect future growth if missed or mismanaged.

  • How do growth plate fractures work?

    They're classified with the Salter-Harris system, from I to V, depending on how the fracture line runs through the plate. Most are treated with careful realignment and immobilisation, but higher grades or displaced injuries may need surgery. Read more at /conditions/growth-plate-fractures/.

  • What is apophysitis?

    Overuse inflammation where a tendon pulls on a growing bump of bone. Osgood-Schlatter is the classic knee example (tibial tuberosity), Sever's affects the heel (calcaneal apophysitis), Sinding-Larsen-Johansson affects the patella and Iselin's affects the base of the 5th metatarsal. Little League elbow (medial epicondyle apophysitis - see /conditions/epicondylitis/) is the throwing-sport version. They settle with activity modification and physiotherapy.

  • What is SCFE and why is it urgent?

    Slipped capital femoral epiphysis is when the ball of the hip slips off the growth plate at the top of the femur. It typically affects overweight adolescents in the growth spurt and often presents with hip, thigh or knee pain and a limp. It is urgent - the child should stop weight bearing and be reviewed by paediatric orthopaedics the same day. Definitive treatment is in situ pinning to prevent further slippage.

  • What is Perthes disease?

    Legg-Calve-Perthes disease is a self-limiting condition where the blood supply to the femoral head is temporarily disrupted, leading to a phase of avascular necrosis and remodelling over 2 to 4 years. It usually affects children aged 4 to 10 and presents with a painless limp or hip and knee pain. Management is led by specialist paediatric orthopaedic services and depends on age, extent of femoral head involvement and containment of the hip.

  • When should I worry about a child's bone pain?

    Persistent night pain, unexplained weight loss, fever, a mass, a new limp, injuries that don't match the story or a child in real distress all deserve prompt medical review. Septic arthritis, osteomyelitis and bone tumours are uncommon but must not be missed - if in doubt, see a doctor rather than wait.

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