Skip to textbook content
Doctor’s PassportTextbook
TopicsAll topics

Loading topic navigation…

Textbook navigation
TopicsAll topics

Loading topic navigation…
← Musculoskeletal medicine and orthopaedics indexChapter sections
OverviewAetiologyPathophysiologyClinical features and red flagsInvestigationsDifferential diagnosisManagementComplicationsMonitoring and follow-upSpecial situationsCommon pitfallsQuestionsSources
Full textbook13 sectionsOpen only what you need
Educational draft · awaiting clinical reviewThe full textbook explains uncertainty but does not replace live national or local guidance, specialist advice, or current prescribing information.

Clubfoot

Musculoskeletal medicine and orthopaedics · UK scope · Sources checked 27 Aug 2026 · Clinical review pending

RapidFull
!
Time-critical presentation

Clubfoot is not usually an emergency, but every newborn needs prompt referral to a trained Ponseti service so treatment begins in the first weeks. A casted infant with blue or pale toes, increasing swelling, absent movement, severe distress, fever, wet or slipped cast or skin injury needs same-day cast removal and clinical review. Do not force the foot or apply untrained splints.

Overview

Distinguish rigid congenital talipes equinovarus from positional foot posture and deliver the Ponseti correction and prolonged bracing sequence that prevents avoidable relapse.

Confirm antenatal findings but diagnose clinically after birth. Ask about family history, reduced fetal movement, other scan abnormalities and pregnancy exposures without implying parental cause. Inspect both feet, calves, knees, hips and spine. Note deep medial and posterior creases, small heel and calf and whether the foot can be gently corrected. Check active toe and ankle movement, perfusion, tone, reflexes and sacral skin. Bilateral clubfoot can still be idiopathic.

Describe severity with a reproducible score such as Pirani or Dimeglio rather than simply mild or severe. Pirani assesses hindfoot and midfoot signs, including posterior crease, empty heel, rigid equinus, medial crease, curved lateral border and talar-head coverage. Scores track response but do not replace experienced examination. Positional talipes is supple and often resolves with movement; true clubfoot resists correction and requires direct Ponseti referral.

Start Ponseti treatment in the first weeks when practical, after family bonding and medical stability. The clinician manipulates gently and applies a well-moulded long-leg cast with knee flexed to prevent slippage. At weekly changes, cavus is corrected by aligning the forefoot, then the foot is abducted beneath a stabilised talar head. The heel corrects through coupled calcaneal rotation; directly pushing the heel or pronating the forefoot creates deformity.

Aetiology

01

Idiopathic multifactorial development

Most cases arise from interacting genetic and developmental factors without a single cause and can affect one or both feet.

02

Familial susceptibility

Risk increases with an affected parent or sibling, supporting polygenic predisposition with variable expression and severity.

03

Syndromic contracture

Arthrogryposis, distal arthrogryposis and other congenital syndromes produce stiffer feet with higher recurrence and treatment burden.

04

Neuromuscular disease

Spina bifida and neurological imbalance can create clubfoot posture alongside weakness, sensory loss and spinal or bladder abnormalities.

Pathophysiology

  1. 1
    Medial and posterior contracture

    Tight capsules, ligaments and tendons hold navicular and calcaneus medially around the talus and maintain hindfoot equinus.

  2. 2
    Cavus from forefoot pronation

    The first ray is plantar-flexed relative to the rest of the forefoot, creating a high medial arch that must be corrected first.

  3. 3
    Coupled hindfoot rotation

    Calcaneus and forefoot rotate beneath the talar head, so abducting the whole foot around the talus corrects adduction and varus together.

  4. 4
    Residual Achilles equinus

    After cavus, adduction and varus correct, a tight Achilles commonly prevents adequate dorsiflexion and requires percutaneous tenotomy.

  5. 5
    Relapse during growth

    Underlying deforming tendency persists despite correction, making prolonged foot-abduction bracing essential while the young child grows.

Clinical features and red flags

Cavus

A plantar-flexed first ray and pronated forefoot relative to hindfoot creates the high medial arch corrected first.

Forefoot adduction

The forefoot and navicular deviate medially around the talar head, curving the lateral border.

Hindfoot varus

The calcaneus sits inverted beneath the talus and corrects through whole-foot abduction, not direct heel pressure.

Rigid equinus

The ankle cannot dorsiflex because posterior capsule and Achilles remain tight after the other components improve.

Empty heel

The calcaneal tuberosity is difficult to feel within the heel pad, reflecting persistent hindfoot equinus.

Dynamic supination relapse

During swing the forefoot supinates and lands laterally despite a passively correctable foot, indicating muscle imbalance.

Red flags requiring action

  • A stiff small foot with deep medial or posterior creases and fixed cavus, adduction, hindfoot varus and equinus is true clubfoot rather than packaging.
  • A convex rocker-bottom sole and dorsiflexed hindfoot suggests congenital vertical talus, which requires a different manipulation sequence.
  • Weak movement, abnormal reflexes, spinal skin markers, arthrogryposis or other anomalies suggests syndromic or neuromuscular clubfoot and a broader assessment.

Investigations

  1. 01
    First-line structured clinical examinationFirst stepFirst line
    Why
    Confirm CAVE deformity, flexibility and idiopathic versus syndromic features and establish a severity baseline.
    Interpretation and limitations
    Rigid coupled deformity supports clubfoot; a foot freely correctable past neutral is positional.
  2. 02
    Pirani or Dimeglio severity score
    Why
    Document response across serial casting and identify persistent hindfoot or midfoot components.
    Interpretation and limitations
    Falling scores support correction, while residual equinus after adequate abduction guides tenotomy assessment.
  3. 03
    Neurological and associated-anomaly assessment
    Why
    Detect spinal dysraphism, arthrogryposis, weakness, hip instability and syndromic disease.
    Interpretation and limitations
    Abnormal movement, reflexes, sensation or multiple contractures redirects prognosis and multidisciplinary care.
  4. 04
    Radiographs for atypical or resistant feet
    Why
    Clarify vertical talus, bony abnormality or later rigid recurrence when clinical anatomy is uncertain.
    Interpretation and limitations
    Routine neonatal idiopathic clubfoot does not need radiography; forced positions should be obtained only under specialist technique.

Differential diagnosis

01

Positional talipes

A flexible packaging deformity corrects easily past neutral and lacks deep creases, small calf and a rigid empty heel.

02

Metatarsus adductus

Forefoot curves medially while hindfoot remains neutral and dorsiflexion is preserved, so full Ponseti clubfoot treatment is unnecessary.

03

Congenital vertical talus

Rigid rocker-bottom appearance with hindfoot equinus and forefoot dorsiflexion requires dedicated reverse-Ponseti treatment and specialist surgical planning.

04

Calcaneovalgus foot

A dorsiflexed everted positional foot contrasts with equinus and hindfoot varus and is commonly flexible on gentle examination.

05

Neuromuscular deformity

Weakness, abnormal tone, absent sensation or spinal markers indicates a secondary clubfoot with different surveillance and recurrence risk.

Management

01NewbornConfirm and refer earlyFirst stepA newborn foot has fixed cavus, adduction, varus and equinus.+
  1. 1Examine flexibility, skin, perfusion, movement, hips, spine and other contractures and document a severity score.
  2. 2Differentiate positional talipes and vertical talus and refer true clubfoot directly to a trained Ponseti service.
  3. 3Explain that treatment is gentle serial correction and was not caused by parental action.
  4. 4Begin casting in the early weeks once medically appropriate and arrange transport and family support.
02CorrectionFollow the Ponseti sequenceIdiopathic or appropriate syndromic clubfoot enters active correction.+
  1. 1Correct cavus by aligning the first ray without pronating the foot.
  2. 2Abduct the foot around the talar head in weekly well-moulded long-leg casts until heel varus corrects.

Complications

01

Relapse

Loss of brace adherence or persistent muscle imbalance allows equinus, adduction, varus and dynamic supination to return during growth.

02

Cast skin or vascular injury

Pressure, swelling, wet plaster or slippage can ulcerate skin or impair perfusion in an infant who cannot localise pain.

03

Rocker-bottom iatrogenic deformity

Forcing dorsiflexion before correcting midfoot and hindfoot alignment can break through the midfoot instead of moving the ankle.

04

Stiff painful overcorrection

Forceful or extensive surgery can produce scarring, weakness, stiffness and later degenerative pain despite a plantigrade appearance.

05

Residual size and calf difference

The affected foot and calf often remain smaller after successful treatment, which is expected and not itself recurrence.

Monitoring and follow-up

  • At every cast contact, inspect toe colour, warmth, swelling, movement, skin, cast dryness and evidence of slippage.
  • Track Pirani or Dimeglio components rather than counting casts alone and confirm heel correction before addressing equinus.
  • After tenotomy, verify dorsiflexion and final-cast position and inspect healing at removal.
  • During brace years, check heel seating, boot size, bar settings, skin and actual hours of use.
  • Once walking, observe foot progression, heel strike, lateral-border loading and dynamic supination.
  • For syndromic disease, coordinate spine, hip, neurological and developmental follow-up and anticipate repeated relapse treatment.

Special situations

Cavus corrects with supination

Pronating the forefoot worsens the first-ray relationship and can create a rigid iatrogenic midfoot deformity.

Varus corrects through abduction

The calcaneus follows the abducting foot beneath the talus; direct heel pushing is unnecessary and potentially harmful.

Equinus comes last

Early forced dorsiflexion bends the midfoot and risks rocker-bottom deformity before hindfoot alignment is corrected.

The brace prevents recurrence

Casting creates correction, while prolonged boots-and-bar wear holds the biology during vulnerable growth.

Smaller is not failed

Even a well-corrected unilateral clubfoot usually retains a shorter foot and slimmer calf without functional limitation.

Relapse starts with range

Loss of dorsiflexion can precede visible varus or gait change and responds best to early recasting.

Common pitfalls

  1. 01

    Calling a rigid CAVE foot positional because antenatal imaging was normal.

  2. 02

    Pronating the forefoot or forcing ankle dorsiflexion before cavus, adduction and varus correct.

  3. 03

    Stopping care after tenotomy without a boots-and-bar maintenance plan.

  4. 04

    Replacing the abduction brace with straight shoes that do not maintain correction.

  5. 05

    Ignoring a wet or slipped cast or toe colour change until the next routine appointment.

  6. 06

    Using extensive soft-tissue release before expert repeat Ponseti treatment for relapse.

Practice

Two practice questions

Your practice draft is saved in this browser.

Question 1 of 2
0 correct
Musculoskeletal medicine and orthopaedicsOriginal SBA

Correct Ponseti sequence

A newborn has rigid cavus, forefoot adduction, hindfoot varus and equinus. Which correction sequence follows the Ponseti principle?

Choose one answer, then submit
← Rapid synopsisBack to overviewAll Musculoskeletal medicine and orthopaedics topics →
Sources and review status4 sources · checked 27 Aug 2026 · clinical review pending+
Sources

Sources and review status

National guidance is shown before implementation-dependent detail. Typical adult dose examples remain subject to patient factors, contraindications and the live BNF or specialist protocol. Source check completed 27 Aug 2026; clinical approval remains outstanding.

  • BSCOS Clubfoot Consensus ProjectUK Ponseti pathway and outcome standardisation.
  • NHS Club FootDiagnosis, Ponseti casting, tenotomy and bracing.
  • Ponseti International AssociationTechnique, correction sequence, brace and relapse principles.
  • UK NIPE Screening OverviewNewborn musculoskeletal examination and referral context.

Editorial contact: Doctor’s Passport editorial team. Source-check date is separate from clinical approval. Report a content problem · Content changes

Authoring stateComplete draftClinical stateAwaiting reviewJurisdictionUnited Kingdom

Equinus is addressed only after the foot has abducted and the heel is neutral or valgus. If ankle dorsiflexion remains limited and the heel feels empty, percutaneous Achilles tenotomy is performed with age-appropriate analgesia or anaesthesia in the trained service. A final cast holds correction for about three weeks while the tendon heals. Ultrasound or radiography is not routinely required for idiopathic diagnosis or tenotomy when clinical landmarks are clear.

Bracing preserves rather than creates correction. Fit bilateral boots connected by a bar, with the treated foot set in the prescribed external rotation and enough dorsiflexion. The brace is commonly worn 23 hours each day for three months, then for nights and naps until four or five years. Check heel seating, sock creases and skin. Address sleep, fitting and family barriers collaboratively because unrecognised practical difficulty appears as non-adherence and relapse.

Review dorsiflexion, heel position, lateral border, passive abduction and dynamic gait. Early loss of range or recurrent adduction responds best to repeat manipulation and casting, followed by resumed brace use. A repeat tenotomy may be needed for recurrent equinus. Once the child walks, dynamic supination during swing with lateral-border landing reflects tibialis-anterior imbalance; after restoring passive correction, transfer to the lateral cuneiform can rebalance selected children.

Syndromic and neuromuscular feet are stiffer, need more casts and relapse more often. Coordinate neurological, spinal, hip and developmental assessment and set realistic functional goals. Limited posterior release or more extensive surgery is reserved for resistant deformity that cannot become plantigrade with expert Ponseti treatment. Repeated extensive soft-tissue releases should be avoided where possible because scar, weakness and painful stiffness accumulate.

Teach families that a corrected foot remains smaller and the calf slimmer, but the goal is a flexible plantigrade pain-free foot in ordinary shoes. Provide urgent cast advice for colour, swelling, smell, dampness, slipping and reduced movement. Continue follow-up through brace years and growth. At every relapse, ask how the brace fits and is being used before blaming the family; repair equipment, education and support alongside mechanical recorrection.

Key points

  • True clubfoot combines cavus, forefoot adduction, hindfoot varus and ankle equinus and is rigid compared with positional talipes.
  • First-line assessment is clinical at birth, including foot flexibility, perfusion, movement, hips, spine and features of arthrogryposis or neurological disease.
  • First-line treatment is the Ponseti method begun early: gentle weekly manipulation followed by toe-to-groin casts in a precise correction sequence.
  • Correct cavus first by supinating the forefoot, then abduct the whole foot around the talar head to correct adduction and heel varus.
  • Correct equinus last; most infants need a percutaneous Achilles tenotomy followed by a final cast while the tendon heals.
  • After correction, use a boots-and-bar foot-abduction brace about 23 hours daily for three months, then during sleep until roughly four or five years.
  • Brace adherence is the major modifiable relapse factor; the bar maintains abduction and must not be replaced by ordinary straight shoes.
  • Treat early relapse with repeat Ponseti casting and renewed bracing; dynamic supination in an older corrected child can require tibialis-anterior transfer.
Toe colour change, swelling or a cast that slips requires urgent review because skin and neurovascular injury can develop rapidly.
  • Persistent empty heel or equinus after the forefoot corrects needs trained reassessment, commonly including Achilles tenotomy rather than forced dorsiflexion.
  • Reappearance of heel varus, forefoot adduction, loss of dorsiflexion or dynamic supination is relapse and should return promptly to the Ponseti team.
  • 05
    Gait and dynamic foot assessment
    Why
    Identify relapse, lateral-border loading and dynamic supination once walking begins.
    Interpretation and limitations
    Restore passive correction before considering tendon transfer for persistent muscle-driven supination.
  • 3Perform Achilles tenotomy when residual equinus persists after adequate abduction and apply the final healing cast.
  • 4Inspect skin, toe perfusion and cast position at every change and remove urgently if complications occur.
    • 03MaintenanceHold correction through growthThe foot is fully corrected after casting and any tenotomy.+
    1. 1Fit the prescribed boots-and-bar brace and confirm heel seating and correct external rotation.
    2. 2Use about 23-hour daily wear for three months, then nights and naps until four or five years.
    3. 3Review skin, equipment size, sleep and family barriers and replace boots before they become tight.
    4. 4Check range and foot shape regularly because early relapse can be subtle before gait changes.
    04RelapseRecover flexibility before balancingAdduction, heel varus, reduced dorsiflexion or dynamic supination returns.+
    1. 1Reassess brace fit and use without blame and document whether recurrence remains passively correctable.
    2. 2Repeat Ponseti manipulation and casts and use repeat tenotomy for selected recurrent equinus.
    3. 3Re-establish the prescribed foot-abduction brace maintenance schedule after correction.
    4. 4Consider tibialis-anterior transfer only for persistent dynamic supination in an appropriately aged, fully corrected foot.
    Key medicines and prescribing safety2 treatments · regimens, roles and cautions+
    Provides procedural analgesia for percutaneous Achilles release while minimising distress and movement.

    Local anaesthetic for Achilles tenotomy

    Use the specialist infant protocol with weight-appropriate local anaesthetic concentration and maximum dose, documenting total milligrams and adding oral or general anaesthesia only according to age and service practice.

    Calculate maximum dose carefully, monitor for local-anaesthetic toxicity and maintain sterile technique; analgesia does not substitute for trained tendon identification.

    Treats short-lived discomfort after manipulation or tenotomy while carers monitor cast safety.

    Paracetamol after casting or tenotomy

    Prescribe the current BNFC age- and weight-based dose with exact milligrams, formulation volume, interval and maximum for the infant.

    Check all products and liquid strengths; persistent distress, swollen or discoloured toes or absent movement requires cast review, not repeated dosing.