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Below-knee plaster cast for the treatment of metatarsus adductus

K Katz1, R David, M Soudry

  • 1Department of Orthopedics, Schneider Children's Medical Center of Israel, Petah Tiqva.

Insights

Below-knee plaster casts effectively treat infantile metatarsus adductus. This method achieved correction in 6-8 weeks, with lasting results at a 4-year follow-up, proving its efficacy.

Area of Science:

  • Pediatric Orthopedics
  • Podiatry
  • Biomechanical Engineering

Background:

  • Metatarsus adductus is a common congenital foot deformity in infants.
  • Inflexible metatarsus adductus requires effective treatment to prevent long-term complications.
  • Current treatments include various casting methods, with ongoing evaluation of efficacy.

Purpose of the Study:

  • To evaluate the effectiveness of below-knee plaster casts in treating moderate and severe inflexible metatarsus adductus in infants.
  • To assess the long-term maintenance of correction after below-knee cast treatment.
  • To compare the outcomes of below-knee casting with those of traditional above-knee casting.

Main Methods:

  • A cohort of 65 infants with moderate or severe inflexible metatarsus adductus was treated.
  • Treatment involved the application of below-knee plaster casts.
  • Patients were followed for 2 to 6 years (mean 4 years) to assess correction and recurrence.

Main Results:

  • Complete correction of metatarsus adductus was achieved in all infants within 6-8 weeks.
  • Correction was maintained long-term in all cases of moderate deformity.
  • Of severe cases, 86% showed maintained or improved correction at follow-up, with no further treatment needed.

Conclusions:

  • Below-knee plaster casting is a highly effective treatment for infantile metatarsus adductus.
  • This conservative approach offers durable correction, even for severe deformities.
  • Results are comparable to more extensive above-knee casting methods, suggesting a simpler treatment option.

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