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Idiopathic Congenital Talipes Equinovarus.

Roye, Roye·J Am Acad Orthop Surg·2002·74 citations·Pediatrics
DOI·PubMed
SummaryAbstract on PubMed →

This 2002 JAAOS narrative review by Roye and Roye covers idiopathic congenital talipes equinovarus comprehensively. It addresses epidemiology, morbid anatomy, classification, nonsurgical and surgical management, complications, and outcomes assessment. The paper synthesizes the state of knowledge at publication and frames ongoing controversies in casting technique and surgical release.

Key Findings

  • The Harrold-Walker classification predicts serial casting success based on how reducible the deformity is:
    –Grade I (mild, reducible to neutral): 89% success with casting
    –Grade II (moderate, within 20° of neutral): 46% success
    –Grade III (severe, cannot reach within 20°): 10% success
    –Use this framework when counseling families and deciding whether to push for more casting cycles or move toward surgery earlier.
  • The Ponseti technique achieves ~90% success without open release, but calling it "nonsurgical" is misleading. 70% of patients still need percutaneous Achilles tenotomy, and ~50% need anterior tibial tendon transfer to maintain reduction. Noncompliance with years of nightly bracing is a major reason for failure in practice.
  • Standard serial casting (non-Ponseti) succeeds in only ~15% of cases. It still earns a role because partial correction reduces the complexity of any subsequent surgery — do not skip casting just because you expect to end up in the OR.
  • Correction sequence is non-negotiable: adduction → varus → equinus (distal to proximal). Forcing equinus correction before correcting adduction traps the calcaneus under the talus and produces a rocker-bottom foot. Forcing adduction correction before varus causes a bean-shaped foot. Get the order right.
  • Overcorrection is harder to salvage than undercorrection. Turco's 15-year series found 70% of 'fair' results were due to overcorrection. The Carroll comprehensive release produced significantly fewer revisions (P=0.04) and less stiffness (P=0.01) than posterior release alone, at the cost of similar functional scores.
  • Talar osteonecrosis is a real surgical risk, occurring in 0.5% to 14% of cases depending on dissection extent. The dorsalis pedis artery is frequently absent in CTEV patients, making the posterior tibial artery the dominant supply. Stretching it during equinus correction can cause vascular compromise. Release the plantar fascia and cast in slight equinus first to protect it.
  • Prenatal ultrasound diagnosis of CTEV carries a 14.2% incidence of associated genetic anomalies. Trisomy 18, Larsen syndrome, neural tube defects, and congenital heart defects. Amniocentesis is recommended whenever the diagnosis is made antenatally.
  • The talar neck is the only universal deformity in CTEV: it is medially rotated, shortened, and plantarflexed. The lateral talocalcaneal angle drops from a normal ~28° to ~5° in the affected foot, reflecting near-parallelism of the two bones on radiograph.
Board PearlCTEV correction must proceed adduction first, then varus, then equinus — reversing this sequence causes rocker-bottom deformity.

Clinical Relevance

When you see a newborn with clubfoot, your first decision is how aggressive to be with casting — and the Harrold-Walker grade tells you what to expect. A Grade I foot has an 89% chance of correcting with serial casting. A Grade III foot has only a 10% chance. Set those expectations with the family on day one.

If you use the Ponseti method, counsel families that "non-surgical" still means procedures for most children: 70% need an Achilles tenotomy and half need a tendon transfer. More importantly, the protocol requires nightly bracing for years, and noncompliance is the leading cause of recurrence in populations where follow-through is difficult.

When casting fails and you go to the OR, get the correction order right: adduction first, then varus, then equinus. And resist the urge to over-release. Overcorrection (hindfoot valgus, pes planus, calcaneus deformity) is documented as harder to fix than undercorrection, and aggressive wide subtalar release is what drives it.

For any prenatal ultrasound diagnosis, order amniocentesis: 14.2% of these fetuses have an associated genetic anomaly.

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Idiopathic Congenital Talipes Equinovarus.

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|

Idiopathic Congenital Talipes Equinovarus.

Roye, Roye·J Am Acad Orthop Surg·2002·74 citations·Pediatrics
DOI·PubMed
SummaryAbstract on PubMed →

This 2002 JAAOS narrative review by Roye and Roye covers idiopathic congenital talipes equinovarus comprehensively. It addresses epidemiology, morbid anatomy, classification, nonsurgical and surgical management, complications, and outcomes assessment. The paper synthesizes the state of knowledge at publication and frames ongoing controversies in casting technique and surgical release.

Key Findings

  • The Harrold-Walker classification predicts serial casting success based on how reducible the deformity is:
    –Grade I (mild, reducible to neutral): 89% success with casting
    –Grade II (moderate, within 20° of neutral): 46% success
    –Grade III (severe, cannot reach within 20°): 10% success
    –Use this framework when counseling families and deciding whether to push for more casting cycles or move toward surgery earlier.
  • The Ponseti technique achieves ~90% success without open release, but calling it "nonsurgical" is misleading. 70% of patients still need percutaneous Achilles tenotomy, and ~50% need anterior tibial tendon transfer to maintain reduction. Noncompliance with years of nightly bracing is a major reason for failure in practice.
  • Standard serial casting (non-Ponseti) succeeds in only ~15% of cases. It still earns a role because partial correction reduces the complexity of any subsequent surgery — do not skip casting just because you expect to end up in the OR.
  • Correction sequence is non-negotiable: adduction → varus → equinus (distal to proximal). Forcing equinus correction before correcting adduction traps the calcaneus under the talus and produces a rocker-bottom foot. Forcing adduction correction before varus causes a bean-shaped foot. Get the order right.
  • Overcorrection is harder to salvage than undercorrection. Turco's 15-year series found 70% of 'fair' results were due to overcorrection. The Carroll comprehensive release produced significantly fewer revisions (P=0.04) and less stiffness (P=0.01) than posterior release alone, at the cost of similar functional scores.
  • Talar osteonecrosis is a real surgical risk, occurring in 0.5% to 14% of cases depending on dissection extent. The dorsalis pedis artery is frequently absent in CTEV patients, making the posterior tibial artery the dominant supply. Stretching it during equinus correction can cause vascular compromise. Release the plantar fascia and cast in slight equinus first to protect it.
  • Prenatal ultrasound diagnosis of CTEV carries a 14.2% incidence of associated genetic anomalies. Trisomy 18, Larsen syndrome, neural tube defects, and congenital heart defects. Amniocentesis is recommended whenever the diagnosis is made antenatally.
  • The talar neck is the only universal deformity in CTEV: it is medially rotated, shortened, and plantarflexed. The lateral talocalcaneal angle drops from a normal ~28° to ~5° in the affected foot, reflecting near-parallelism of the two bones on radiograph.
Board PearlCTEV correction must proceed adduction first, then varus, then equinus — reversing this sequence causes rocker-bottom deformity.

Clinical Relevance

When you see a newborn with clubfoot, your first decision is how aggressive to be with casting — and the Harrold-Walker grade tells you what to expect. A Grade I foot has an 89% chance of correcting with serial casting. A Grade III foot has only a 10% chance. Set those expectations with the family on day one.

If you use the Ponseti method, counsel families that "non-surgical" still means procedures for most children: 70% need an Achilles tenotomy and half need a tendon transfer. More importantly, the protocol requires nightly bracing for years, and noncompliance is the leading cause of recurrence in populations where follow-through is difficult.

When casting fails and you go to the OR, get the correction order right: adduction first, then varus, then equinus. And resist the urge to over-release. Overcorrection (hindfoot valgus, pes planus, calcaneus deformity) is documented as harder to fix than undercorrection, and aggressive wide subtalar release is what drives it.

For any prenatal ultrasound diagnosis, order amniocentesis: 14.2% of these fetuses have an associated genetic anomaly.

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