Aims

It is well established that there is a strong association between Perthes’ disease and worsening socioeconomic deprivation. It has been suggested that the primary determinant driving this association is exposure to tobacco smoke. This study aimed to examine this hypothesis.

Aims

To explore the of age of onset distribution for Perthes’ disease of the hip, with particular reference to gender, laterality and conformity to the lognormal distribution.

We report the effect of introducing a dedicated Ponseti service on the five-year treatment outcomes of children with idiopathic clubfoot.

Between 2002 and 2004, 100 feet (66 children; 50 boys and 16 girls) were treated in a general paediatric orthopaedic clinic. Of these, 96 feet (96%) responded to initial casting, 85 requiring a tenotomy of the tendo-Achillis. Recurrent deformity occurred in 38 feet and was successfully treated in 22 by repeat casting and/or tenotomy and/or transfer of the tendon of tibialis anterior, The remaining 16 required an extensive surgical release.

Between 2005 and 2006, 72 feet (53 children; 33 boys and 20 girls) were treated in a dedicated multidisciplinary Ponseti clinic. All responded to initial casting: 60 feet (83.3%) required a tenotomy of the tendo-Achillis. Recurrent deformity developed in 14, 11 of which were successfully treated by repeat casting and/or tenotomy and/or transfer of the tendon of tibialis anterior. The other three required an extensive surgical release.

Statistical analysis showed that children treated in the dedicated Ponseti clinic had a lower rate of recurrence (p = 0.068) and a lower rate of surgical release (p = 0.01) than those treated in the general clinic.

This study shows that a dedicated Ponseti clinic, run by a well-trained multidisciplinary team, can improve the outcome of idiopathic clubfoot deformity.

Cite this article: Bone Joint J 2014;96-B:1424–6

Aim

To compare outcomes for children treated for idiopathic clubfeet with the Ponseti regimen before (2002–2004) and after (2005–2006) implementation of a dedicated Ponseti service.

Aim

10 years after the introduction of the Ponseti casting regimen as standard treatment for idiopathic clubfoot at Alder Hey Children's Hospital, we reviewed the mid-term outcomes of the initial 2-year cohort (treated from 2002–2004)

Perthes’ disease is an osteonecrosis of the juvenile hip, the aetiology of which is unknown. A number of comorbid associations have been suggested that may offer insights into aetiology, yet the strength and validity of these are unclear. This study explored such associations through a case control study using the United Kingdom General Practice Research database. Associations investigated were those previously suggested within the literature. A total of 619 cases of Perthes’ disease were included, as were 2544 controls. The risk of Perthes’ disease was significantly increased with the presence of congenital anomalies of the genitourinary and inguinal region, such as hypospadias (odds ratio (OR) 4.04 (95% confidence interval (CI) 1.41 to 11.58)), undescended testis (OR 1.83 (95% CI 1.12 to 3.00)) and inguinal herniae (OR 1.79 (95% CI 1.02 to 3.16)). Attention deficit hyperactivity disorder was not associated with Perthes’ disease (OR 1.01 (95% CI 0.48 to 2.12)), although a generalised behavioural disorder was (OR 1.55 (95% CI 1.10 to 2.17)). Asthma significantly increased the risk of Perthes’ disease (OR 1.44 (95% CI 1.17 to 1.76)), which remained after adjusting for oral/parenteral steroid use.

Perthes’ disease has a significant association with congenital genitourinary and inguinal anomalies, suggesting that intra-uterine factors may be critical to causation. Other comorbid associations may offer insight to support or refute theories of pathogenesis.

Clinical prediction algorithms are used to differentiate transient synovitis from septic arthritis. These algorithms typically include the erythrocyte sedimentation rate (ESR), although in clinical practice measurement of the C-reactive protein (CRP) has largely replaced the ESR. We evaluated the use of CRP in a predictive algorithm.

The records of 311 children with an effusion of the hip, which was confirmed on ultrasound, were reviewed (mean age 5.3 years (0.2 to 15.1)). Of these, 269 resolved without intervention and without long-term sequelae and were considered to have had transient synovitis. The remaining 42 underwent arthrotomy because of suspicion of septic arthritis. Infection was confirmed in 29 (18 had micro-organisms isolated and 11 had a high synovial fluid white cell count). In the remaining 13 no evidence of infection was found and they were also considered to have had transient synovitis. In total 29 hips were categorised as septic arthritis and 282 as transient synovitis. The temperature, weight-bearing status, peripheral white blood cell count and CRP was reviewed in each patient.

A CRP > 20 mg/l was the strongest independent risk factor for septic arthritis (odds ratio 81.9, p < 0.001). A multivariable prediction model revealed that only two determinants (weight-bearing status and CRP > 20 mg/l) were independent in differentiating septic arthritis from transient synovitis. Individuals with neither predictor had a < 1% probability of septic arthritis, but those with both had a 74% probability of septic arthritis. A two-variable algorithm can therefore quantify the risk of septic arthritis, and is an excellent negative predictor.

The association between idiopathic congenital talipes equinovarus (CTEV) and developmental dysplasia of the hip is uncertain. We present an observational cohort study spanning 6.5 years of selective ultrasound screening of hips in clubfoot. From 119 babies with CTEV there were nine cases of hip dysplasia, in seven individuals. This suggests that 1 in 17 babies with CTEV will have underlying hip dysplasia.

This study supports selective ultrasound screening of hips in infants with CTEV.

Purpose: Scarf osteotomies are commonly performed in adults with symptomatic bunions. We have reported the radiological and clinical outcome of this procedure in the treatment of moderate to severe hallux valgus among adolescent children.

Methods: Data was collected retrospectively from a tertiary referral children hospital between April 2001 and June 2006. The pre and postoperative intermetatarsal angle (IMA), hallux valgus angle (HVA) and distal metatarsal articular angle (DMAA) were determined. Patients were followed up for a mean of 8.6 months (3–18).

Results: 23 scarf osteotomies were performed in 16 patients with a mean age of 14.3 years (12–18). The mean pre operative IMA of 14.4 degrees was improved to a postoperative value of 9.3 degrees, p< 0.0001. The mean HVA angle was improved from 34.7 to 16.5 degrees, p< 0.0001. The DMAA was improved from 13.1 to 8 degrees, p< 0.0001. There were 2 cases of superficial wound infections successfully treated with oral antibiotics. One patient developed a complex regional pain syndrome that resolved with physiotherapy and analgesia.

Conclusion: We believe that scarf osteotomy is a safe and effective option for the management of the adolescent symptomatic bunions.

Significance: There are no published reports in the English literature of scarf osteotomy in the management of adolescent children with symptomatic hallux valgus. The aim of this paper is to report the radiological and clinical outcome of scarf osteotomy in the treatment of moderate to severe hallux valgus among adolescent children.

A total of 25 children (37 legs and 51 segments) with coronal plane deformities around the knee were treated with the extraperiosteal application of a flexible two-hole plate and screws. The mean age was 11.6 years (5.5 to 14.9), the median angle of deformity treated was 8.3° and mean time for correction was 16.1 months (7 to 37.3). There was a mean rate of correction of 0.7° per month in the femur (0.3° to 1.5°), 0.5° per month in the tibia (0.1° to 0.9°) and 1.2° per month (0.1° to 2.2°) if femur and tibia were treated concurrently. Correction was faster if the child was under 10 years of age (p = 0.05). The patients were reviewed between six and 32 months after plate removal. One child had a rebound deformity but no permanent physeal tethers were encountered.

The guided growth technique, as performed using a flexible titanium plate, is simple and safe for treating periarticular deformities of the leg.

Purpose of Study: To present the clinical features, investigations, histopathology, differential diagnosis and treatment options for lipoblastoma, based on a series of six encountered in our paediatric orthopaedic practice.

Method: The records of six children with lipoblastoma who attended Alder Hey Hospital between 2000 and 2006 were reviewed. Mean age was 17 months and mean follow up was 26 months.

Results: The youngest was a six month old infant with a swelling on his right instep. The second patient, a three year old girl, presented with a limp and swelling in her foot. The third patient was an 18 month old boy with a swelling on the dorsum of his left forearm. The fourth patient had a swelling of his left thigh and two patients had swellings in their backs. Each was investigated by MRI (1), CT (1) or US (4) and surgical excision planned accordingly. There were no post operative complications. None has shown recurrence during follow-up.

Conclusions: All patients were originally thought to have simple lipomata or soft tissue swellings. This is primarily because lipoblastoma is a rare tumour, yet lipoblastoma is the most likely diagnosis of a fatty lump in a child aged less than two. Differential diagnoses include myxoid liposarcoma, well-differentiated liposarcoma, spindle cell lipoma, typical lipoma and soft tissue sarcoma.

Lipoblastomata need thorough imaging. Cytogenetic evaluation of tumour cells often reveals chromosomal anomalies, such as abnormalities of the long arm of chromosome 8 leading to rearrangement of the PLAG1 gene. Biopsy of the lesion is recommended for accurate diagnosis, as clinical and radiological diagnoses can be misleading.

Lipoblastomata tend to spread locally and may recur after incomplete resection; metastatic potential has not been reported. Complete surgical resection is mandatory to prevent recurrence.

Introduction: It is common practice to screen the hips of infant with a family history of DDH clinically and ultra-sonographically in selective screening programmes. The practice of regular radiographic follow-up of infants with a positive family history of Developmental Hip Dysplasia (DDH) is based on the widespread belief that Primary Acetabular Dysplasia is a genetic disorder that can occur in the absence of frank hip subluxation or dislocation¹. It has been our practice to obtain a 6 – 12 month screening radiograph in such patients but this practice is not conclusively supported in the literature.

Materials and Methods: We reviewed all such infants who had a normal clinical and ultrasound examination of the hips at the 6–8 week screening examination but who, because of the family history underwent further radiographic screening after a 6–12 month interval. The radiographs of all such infants (n=77) were analysed for any signs of late hip dysplasia.

Results and Discussion: Sixty six infant had normal X rays at the 6–8 month assessment and were discharged. The remaining eleven patients had acetabular angles at the upper end of the normal range for age and were reviewed again with further radiographs at 12 months. At this stage ten patients were normal and were discharged. The remaining patient was reviewed again at 18 months and 24 months and finally proved to be normal and was discharged. The result of a postal survey has suggested that majority of BSCOS members do not get follow up x-ray done if the clinical and ultrasound scan is normal at screening visit.

Conclusion: All of the seventy seven patients eventually developed normal radiographs and we question the need for radiographic follow up of infants with a family history of DDH but who have a normal clinical examination and ultrasound scan at 6–8 weeks.

We report our initial experience of using the Ponseti method for the treatment of congenital idiopathic club foot.

Between November 2002 and November 2004 we treated 100 feet in 66 children by this method. The standard protocol described by Ponseti was used except that, when necessary, percutaneous tenotomy of tendo Achillis were performed under general anaesthesia in the operating theatre and not under local anaesthesia in the out-patient department. The Pirani score was used for assessment and the mean follow-up time was 18 months (6 to 30).

The results were also assessed in terms of the number of casts applied, the need for tenotomy of tendo Achillis and recurrence of the deformity. Tenotomy was required in 85 of the 100 feet. There was a failure to respond to the initial regimen in four feet which then required extensive soft-tissue release. Of the 96 feet which responded to initial casting, 31 (32%) had a recurrence, 16 of which were successfully treated by repeat casting and/or tenotomy and/or transfer of the tendon of tibialis anterior. The remaining 15 required extensive soft-tissue release. Poor compliance with the foot-abduction orthoses (Denis Browne splint) was thought to be the main cause of failure in these patients.

Several techniques are available for the treatment of displaced fractures of the neck of the radius in children. We report our experience in 14 children treated by indirect reduction and fixation using an elastic stable intramedullary nail. The patients were followed up for a mean of 28 months. One developed asymptomatic avascular necrosis. The rest had excellent results. One had a neuropraxia of the posterior interosseous nerve, which recovered within six weeks. We advocate elastic stable intramedullary nailing for the closed reduction and fixation of these fractures in children.

Aim: A retrospective study to analyse the treatment of paediatric diaphyseal forearm fractures over the preceding 6 years and to assess if there was any difference in outcome between plate and elastic stable intra-medullary nailing (ESIN).

Material and Methods: Between January 1997 and December 2002, 144 unstable fractures required surgical fixation. 59 patients were treated with both-bone plate fixation, 55 patients were treated with single-bone plate fixation and 30 patients were treated with ESIN.

The mean age of surgery was approximately 12 with peaks at age 8 and 13 years.

In the plate group, 70% to 80% were undertaken by the SpRs and in the nailing group, approximately 50% were undertaken by staff grades; 30% by Consultants and 20% by SpRs.

Results: Between each group there was no difference in time spent in plaster, clinic attendance, time to clinical union and time to restoration of normal movements. On radiographic reviews, single-bone plate fixation patients united quicker than the both-bone plate fixation or ESIN groups. Average anaesthetic times became more prolonged from single-bone to ESIN to both-bone plate fixation.

Compound fractures were approximately 10% in both groups. There were hyper-trophic scars in approximately 10% in the plate group and 3% in the nail group. There were 3 compartment syndromes in the plate group and 2 compartment syndromes in the nail group.

In the plating groups, there was a higher rate of peri-prosthetic fracture, mal-union, hyper-trophic scarring, infection and neuro-vascular complications.

Conclusion: ESIN is superior to plating in relation to surgical complications. It is therefore recommended that elastic stable intra-medullary nailing should be used for displaced paediatric diaphyseal forearm fractures.

Aim: To evaluate the initial experience of using the Ponseti Method in the management of idiopathic clubfoot and to identify learning curve problems.

Materials and Methods: A retrospective analysis undertaken of 57 feet in 39 patients with CTEV treated by the Ponseti method. The standard protocol described by Ponseti was followed. Pirani’s clubfoot score was used to assess the deformity and the results of treatment. The follow-up in the study ranged from 3 months to 35 months. Denis Brown splints were used full-time for 3 months and at night for 1 year.

Results: 47 out of 57 feet had good results with no evidence of recurrence. 10 feet had recurrence and underwent further surgery. If compliance was poor with the Denis Brown splints or if there was a severe initial deformity there was an increased risk of recurrence. 20% had problems with the plaster of Paris cast and the foot slipped out of the Denis Brown splint in 14%. It was noted there were 2 cases of bruising and swelling associated with the removal of the cast and the application of Denis Brown boots which had not previously been reported.

Conclusion: This is only a preliminary study and therefore the long-term outcome cannot be assessed. It was noted that attention to detail and appropriate regular follow-up is important in achieving satisfactory results.

Low energy hip dislocation in children is an uncommon injury (0.335% of injuries ) which represents a true orthopaedic emergency.

Case 1 ; A 6 year old girl attended hospital non-weightbearing with right thigh pain after slipping whilst attempting to kick a football. The leg was shortened and internally rotated with no neurovascular deficit. Radiographs revealed a posterior dislocation of the right hip. A closed reduction was undertaken in theatre within four hours. She was immobilised in a hip spica for 6 weeks. At six month review she was pain free and back to full activities. Radiographs showed no abnormality.

Case 2 ; A 5 year old boy attended A+E non-weight-bearing with right lower leg and knee pain having done the splits playing football. Examination of knee and lower leg showed pain but nil else. Radiographs of the knee were normal. He was discharged with a diagnosis of possible ACL rupture. He re-attended 2 days later with immobility and increasing pain. Examination showed a 2cm leg length discrepancy. Radiographs revealed a posterior hip dislocation. He underwent a closed reduction in theatre. He progressed well under regular review until 5 months post-injury. He had increasing pain and decreasing range of movement. Radiographs showed trans-epiphyseal avascular necrosis. He therefore underwent a varus de-rotation osteotomy. One year on he has returned to full activities. He has a mild decreased range of movement. Radiographs show a flattened epiphysis and a united osteotomy.

Hip dislocation requires less trauma in children due to ligamentous laxity and a soft pliable acetabulum. Overall 64% are low energy and 80% are posterior dislocations. Complications include AVN, arthritis, nerve palsy and recurrent dislocation. AVN is 20 times more common if reduction is after 6 hours.

This report highlights the importance of thorough examination, accurate diagnosis and early treatment of paediatric hip dislocation.

This paper presents the results of forearm fractures in twenty children treated with flexible intramedullary nailing, over a period of 3 yrs.

Forearm fractures in children are an extremely common injury and excellent results are obtained in the majority of cases by closed reduction and plaster immobilisation. If adequate reduction cannot be achieved or maintained by conservative means or if it fails, some form of internal fixation will be required. Flexible nails are an extremely effective way for addressing this problem.

Twenty children had flexible intramedullary nailing done following forearm fractures over a 3-year period from 1997–2000 [failed reduction (10), unstable post MUA(3), slipped in plaster(6) and open fractures(1)]. There were 15 male and 5 female patients, the mean age being 10. 9. The nature of the injury were radial neck (3); proximal radius (1), galeazzi (1) and both bone fractures (15). Nine patients had closed nailing, while 11 required a mini open approach of which, 5 needed exposure only on one side. Patients were protected post surgery until signs of union were seen. The patients had regular clinical and radiological assessment and nails were removed on an average of 6–8 months, though in patients with radial neck fractures it was removed much earlier [4–5 weeks].

All patients went on to full bony union in excellent position, the average time to union being 5. 8 weeks. All but one patient regained full prono-supination, elbow and wrist motion, though none had any functional disability. There were a few minor complications especially following implant removal, including superficial wound infections (3), transient hypoasthesia in the distribution of the superficial radial nerve (2) and one patient in whom one nail had to be left behind as it could not be removed. There were no long-term sequelae.

Several methods of internal fixation are available, and the very diversity of choice demonstrates the lack of an ideal solution. K-wires are not applicable at all levels and plates have the disadvantage that they require extensive exposure of the fracture site. Removal of the plates is just as, if not more, fraught with complications.

Flexible nails can often be inserted closed, leave cosmetically more acceptable scars, provide excellent alignment of the fracture and can be removed easily without requiring any postoperative immobilisation. In our opinion it should be considered as the method of choice in treating forearm fractures in children, when some form of internal fixation is required.