Aims

The aim of this study was to gain an agreement on the management of idiopathic congenital talipes equinovarus (CTEV) up to walking age in order to provide a benchmark for practitioners and guide consistent, high-quality care for children with CTEV.

The aim was to determine reliability in treatment threshold based on USS angular measurements between observers involved in the DDH hip screening programme at the NOC and assess the effect of image orientation on the accuracy of these measurements.

3 independent observers measured alpha and beta angles on bilateral hips in 10 consecutive patients seen in the DDH hip screening clinic. All scans were performed by a single radiographer and observers used the same set of USS images for a given patient. Each observer measured alpha and beta angles a total of 4 times: conventional ultrasound image projection (with the ilium horizontal) (round 1), Graf's anatomical projection (round 2), and both techniques repeated 1 month later (round 3 and 4 respectively) to assess intra-observer reliability. To determine its effect on treatment threshold taking into account alpha and beta angles and patient's age, the consistency between observers' management recommendations was evaluated for each round. Possible outcomes were: 1) patient discharged, 2) no treatment needed yet, but follow-up required, 3) start treatment.

Intra-observer reliability for conventional projection was moderate (Kappa 0.58), and improved for anatomical projection (Kappa 0.65). Inter-observer reliability, as a surrogate measure of consistency in management recommendations between observers, ranged from fair to moderate across the 4 rounds (Kappa 0.30 – 0.50). However, contrary to previous recommendations, reliability was better with conventional projection (Kappa 0.41 (95% CI 0.11–0.72)) compared to anatomical projection (Kappa 0.36 (95% CI −0.01–0.73)). The overall agreement in management recommendations, pooling all results across 4 rounds, was 51.3% (Kappa 0.39 (95%CI 0.15–0.63)).

This audit supports the argument that anatomical image projection improves intra-observer consistency. However, as with all USS measurements, angular measurements were highly user dependent and treatment threshold based on USS may not be as consistent as anticipated.

The purpose of the study was to identify risk factors that are associated with re-displacement of the hip after surgical reconstruction in cerebral palsy.

Retrospective review of children with cerebral palsy who had hip reconstruction with proximal femoral varus derotation osteotomy (VDRO) and Dega-type pelvic osteotomy, between 2005–2012, at a UK and European institution, was performed. Patient demographics, GMFCS, clinical and radiological outcome were assessed as well as the presence of pelvic obliquity and significant scoliosis (Cobb angle > 10 degrees). Redisplacement was defined as Reimer's Migration Index (MI) >30% at final follow-up. Logistic regression analysis was used to assess which factors were predictive of redisplacement and adjusted for clustered variables (α = 0.05).

Eighty hips were identified in 61 patients. The mean age at surgery was 8.8 years (± 3.3). Mean MI pre-op was 68% (± 23%) and post-op was 8% (± 12%). At a mean follow-up, of 3.2 years (± 2.0), 23 hips had a MI >30%. Of these; five were symptomatic, and one had required a salvage procedure. Metalwork removal was undertaken in 14 hips. Logistic regression demonstrated that the pre-operative MI and the percentage of acute correction were significant predictors of re-displacement. If the pre-operative MI was greater than 65 percent, the odds ratio (OR) for redisplacement was 5.99 (p = 0.04). If correction of the MI was less than 90% of the pre-operative MI, the OR for re-displacement was 4.6 (p = 0.03). Age at the time of surgery, GMFCS, pelvic obliquity and scoliosis were not predictive of re-displacement.

These results, firstly, highlight the importance of hip surveillance in children with cerebral palsy to allow timely intervention to ensure adequate radiological outcomes. Secondly, as in developmental hip dysplasia, full concentric reduction is essential to reduce the risk of re-displacement, with its associated clinical consequences.

Purpose of study

To assess the risk of early re—dislocation following closed reduction (CR) of the hip for idiopathic developmental dysplasia of the hip (DDH).

Early results of Ponseti treatment in 14 children (17 feet) aged between 2 and 10 years at the start of treatment are assessed.

Method and Results 14 children aged between 2 and 10 years (mean 5.4) presented with relapsed or under- corrected club feet. All had previous treatment with strapping and bebax or pedro boots. 8 had subsequently undergone posterior release of the Achilles tendon, ankle and subtalar joint through a longitudinal posterior incision.

All patients presented with absent heel strike, walking on the lateral border of the foot. 14 feet had a varus heel and 15 had an internal foot progression angle. Mean Pirani score was 2.14. Photographs and videos were taken. Ponseti casting was implemented. 15 feet required an Achilles tenotomy, and 15 feet had a tibialis anterior transfer to help maintain the correction.

Pirani scores improved from a mean of 2.64 to 0.21 in the group that had had previous surgery, and 1.64 to 0.07 in those that had had previous conservative treatment. All patients achieved a heel strike and ceased to walk on the lateral border of the foot. Heel varus corrected in 11/14 and partially corrected in 3. Internal foot progression resolved in 12/15 and improved in 3.

At latest follow up (16 months- 20 months), all transfers were working and all patients walked with heel strike and a plantargrade foot. 2 patients required further casting for relapse in forefoot adductus, and one for recurrent posterior tightness.

Conclusions The Ponseti method has been successful in the under corrected or relapsed club foot in children aged between 2 and 10 years in this series, including those with previous surgical intervention.

Purpose of study

To determine whether hemiplegia causes abnormal torsion of the radius of the affected compared with the unaffected limb as demonstrated by MRI measurements, and to assess whether this correlates with the passive range of movement as measured clinically.