BackgroundTo study motor ability at seven years of age in children treated for idiopathic clubfoot and its relation to clubfoot laterality, foot status and the amount of surgery performed.MethodsTwenty children (mean age 7.5 years, SD 3.2 months) from a consecutive birth cohort from our hospital catchments area (300.000 inhabitants from southern Sweden) were assessed with the Movement Assessment Battery for Children (MABC) and the Clubfoot Assessment Protocol (CAP).ResultsCompared to typically developing children an increased prevalence of motor impairment was found regarding both the total score for MABC (p < 0.05) and the subtest ABC-Ball skills (p < 0.05). No relationship was found between the child's actual foot status, laterality or the extent of foot surgery with the motor ability as measured with MABC. Only the CAP item "one-leg stand" correlated significantly with the MABC (rs = -0.53, p = 0.02).ConclusionsChildren with idiopathic clubfoot appear to have an increased risk of motor activity limitations and it is possible that other factors, independent of the clinical status, might be involved. The ability to keep balance on one leg may be a sufficient tool for determining which children in the orthopedic setting should be more thoroughly evaluated regarding their neuromotor functioning.
BackgroundIn most clubfoot studies, the outcome instruments used are designed to evaluate classification or long-term cross-sectional results. Variables deal mainly with factors on body function/structure level. Wide scorings intervals and total sum scores increase the risk that important changes and information are not detected. Studies of the reliability, validity and responsiveness of these instruments are sparse. The lack of an instrument for longitudinal follow-up led the investigators to develop the Clubfoot Assessment Protocol (CAP).The aim of this article is to introduce and describe the CAP and evaluate the items inter- and intra reliability in relation to patient age.MethodsThe CAP was created from 22 items divided between body function/structure (three subgroups) and activity (one subgroup) levels according to the International Classification of Function, Disability and Health (ICF). The focus is on item and subgroup development.Two experienced examiners assessed 69 clubfeet in 48 children who had a median age of 2.1 years (range, 0 to 6.7 years). Both treated and untreated feet with different grades of severity were included. Three age groups were constructed for studying the influence of age on reliability. The intra- rater study included 32 feet in 20 children who had a median age of 2.5 years (range, 4 months to 6.8 years).The Unweighted Kappa statistics, percentage observer agreement, and amount of categories defined how reliability was to be interpreted.ResultsThe inter-rater reliability was assessed as moderate to good for all but one item. Eighteen items had kappa values > 0.40. Three items varied from 0.35 to 0.38. The mean percentage observed agreement was 82% (range, 62 to 95%). Different age groups showed sufficient agreement. Intra- rater; all items had kappa values > 0.40 [range, 0.54 to 1.00] and a mean percentage agreement of 89.5%. Categories varied from 3 to 5.ConclusionThe CAP contains more detailed information than previous protocols. It is a multi-dimensional observer administered standardized measurement instrument with the focus on item and subgroup level. It can be used with sufficient reliability, independent of age, during the first seven years of childhood by examiners with good clinical experience.A few items showed low reliability, partly dependent on the child's age and /or varying professional backgrounds between the examiners. These items should be interpreted with caution, until further studies have confirmed the validity and sensitivity of the instrument.
The purpose of this study was to sonographically compare the early anatomical outcome of a group of clubfeet treated with the Ponseti method (group A, nine clubfeet) with a group treated with an adjustable plexidur splint, the Copenhagen method (group B, 19 feet). The clinical severity was assessed using the Diméglio-Bensahel classification. The need for complementary surgery was clinically assessed at the age of about 2 months. Ultrasound investigation was made in the neonatal period, after 2-3 months of non-surgical treatment and 1-2 months post-surgically. After 2 months of non-surgical treatment the correction obtained at the talo-navicular joint, expressed as the distance between the medial malleolus and the navicular (MM-N distance), was significantly greater in group A. After surgery, tenotomy of the Achilles tendon for all group A feet, and posterior or posteriomedial release for 13 feet in group B, the correction at the talo-navicular and calcaneo-cuboid joints was similar for the two groups. Anatomical correction of the displacement in these joints can be achieved without extensive interventional procedures. Ultrasound may be a valuable tool to assess the effects of different treatment protocols quantitatively.
Level II-prognostic studies.This is an open-access article distributed under the terms of the Creative Commons Attribution-Non Commercial-No Derivatives License 4.0 (CCBY-NC-ND), where it is permissible to download and share the work provided it is properly cited. The work cannot be changed in any way or used commercially without permission from the journal. http://creativecommons.org/licenses/by-nc-nd/4.0/.
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