French Osteotomy for Cubitus Varus in Children: A Long-term Study Over 27 Years.

BACKGROUND: Cubitus varus is a cosmetically unacceptable complication of supracondylar fractures of the elbow in children. We have performed the lateral closing wedge (French) osteotomy to correct the varus for 27 years. More complex osteotomies have been described to correct the associated hyperextension and internal rotation deformities and to prevent a prominent lateral condyle. METHODS: We retrospectively reviewed 90 consecutive patients (1986 to 2012). The mean age of the patients at surgery was 8.2 years (3 to 14 y). The varus angle (mean, 21.4 degrees; range, 8 to 40 degrees) was assessed preoperatively with the humero-elbow-wrist angle. The postoperative carrying angle (mean, 10.4 degrees) and the preoperative and postoperative range of movement were assessed clinically. The lateral condylar prominence index (LCPI) was retrospectively measured at union. RESULTS: Eighty-four (93.3%) of the patients had a good or excellent result. Six (6.7%) had a poor result (residual varus, loss of >20 degrees of preoperative range of flexion or extension or a complication necessitating resurgery). There were no neurovascular complications. The mean LCPI was +0.14. CONCLUSIONS: The results of the French osteotomy are comparable with the more technically demanding dome, step-cut translation, and multiplanar osteotomies, with a lower complication rate. The literature reports adequate remodeling of the hyperextension deformity (≤10 y) and the LCPI (≤12 y), and that the internal rotation deformity is well tolerated by the patient. LEVEL OF EVIDENCE: Level IV-case series.

The effect of percutaneous pin fixation in the treatment of distal femoral physeal fractures.

Distal femoral physeal fractures in children have a high incidence of physeal arrest, occurring in a mean of 40% of cases. The underlying nature of the distal femoral physis may be the primary cause, but other factors have been postulated to contribute to the formation of a physeal bar. The purpose of this study was to assess the significance of contributing factors to physeal bar formation, in particular the use of percutaneous pins across the physis. We reviewed 55 patients with a median age of ten years (3 to 13), who had sustained displaced distal femoral physeal fractures. Most (40 of 55) were treated with percutaneous pinning after reduction, four were treated with screws and 11 with plaster. A total of 40 patients were assessed clinically and radiologically after skeletal maturity or at the time of formation of a bar. The remaining 15 were followed up for a minimum of two years. Formation of a physeal bar occurred in 12 (21.8%) patients, with the rate rising to 30.6% in patients with high-energy injuries compared with 5.3% in those with low-energy injuries. There was a significant trend for physeal arrest according to increasing severity using the Salter-Harris classification. Percutaneous smooth pins across the physis were not statistically associated with growth arrest.

Double-elevating osteotomy for late-presenting infantile Blount's disease: the importance of concomitant lateral epiphysiodesis.

We reviewed 34 knees in 24 children after a double-elevating osteotomy for late-presenting infantile Blount's disease. The mean age of patients was 9.1 years (7 to 13.5). All knees were in Langenskiöld stages IV to VI. The operative technique corrected the depression of the medial joint line by an elevating osteotomy, and the remaining tibial varus and internal torsion by an osteotomy just below the apophysis. In the more recent patients (19 knees), a proximal lateral tibial epiphysiodesis was performed at the same time. The mean pre-operative angle of depression of the medial tibial plateau of 49 degrees (40 degrees to 60 degrees ) was corrected to a mean of 26 degrees (20 degrees to 30 degrees ), which was maintained at follow-up. The femoral deformity was too small to warrant femoral osteotomy in any of our patients. The mean pre-operative mechanical varus of 30.6 degrees (14 degrees to 66 degrees ) was corrected to 0 degrees to 5 degrees of mechanical valgus in 29 knees. In five knees, there was an undercorrection of 2 degrees to 5 degrees of mechanical varus. At follow-up a further eight knees, in which lateral epiphysiodesis was delayed beyond five months, developed recurrent tibial varus associated with fusion of the medial proximal tibial physis.

Tuberculosis of the knee in children.

We reviewed 33 children with tuberculosis of the knee treated during the period from 1979 to 1991. All were treated with triple chemotherapy, using rifampicin, isoniazid and pyrazinamide for nine months. No patient had a synovectomy; surgery was limited to open biopsy or salvage procedures such as posterior release and arthrodesis for late stages of the disease. The radiological appearance of the knee at presentation predicted the outcome. The 30 patients with stage-1 (normal) or stage-2 (osteomyelitic) disease had excellent or good results; the three with narrowed joint spaces in stage 3 or stage 4 (arthritic) had fair or poor results. Early active mobilisation, as against long-term immobilisation, seemed to have no effect on the outcome of stage-1 or stage-2 disease.

Tuberculosis of the hip in children.

We have reviewed 74 tuberculous hips in 73 children treated from 1950 to 1991. From 1979 to 1991 we treated 28 patients with rifampicin, isoniazid and pyrazinamide given for nine months (series A), using active mobilisation for the more recent cases. Before this, 46 hips had been treated with streptomycin and isoniazid with or without para-aminosalicyclic acid given for a mean of 18 months (series B), and all these patients were immobilised for a mean of 2.2 years. The radiological appearances at presentation as classified by Shanmugasundaram (1983) predicted the outcome. Most hips were of the 'normal' type (50% and 59% of series A and B respectively) followed by the dislocating type (25% and 13%) and the atrophic type (8% and 9%). There were good or excellent results in 93% of the 'normal' type. All the atrophic type had poor results. The dislocating type had a poor result if the joint space was narrow after reduction of the hip. Early mobilisation had no effect on the outcome of the 'normal' type of disease. The newer drug regimens allowed for shorter courses of treatment, but did not necessarily give a better outcome.

Isotope bone scanning for acute osteomyelitis and septic arthritis in children.

We prospectively studied 86 children to assess the value and accuracy of isotope bone scanning in the diagnosis of suspected acute haematogenous osteomyelitis and septic arthritis. The patients were scanned because of difficulty in localising the exact site of the pathology. Characteristic scan appearances were found. In osteomyelitis there was increased or decreased uptake extending beyond the confines of the joint capsule; in septic arthritis there was increased or decreased uptake on either side of the joint line, but largely limited to and uniform within the joint capsule. The bone-scan images were correlated with the final diagnosis in 34 sites of septic arthritis and in 62 sites of osteomyelitis. The overall accuracy of the bone scans was 81%. The predictive value for a positive scan to be correct was 100% for a cold scan and 82% for a hot scan. The main reason for a false-positive scan was contiguous soft-tissue infection. The predictive value for a negative scan to be correct was 63%. One reason for a false-negative scan was that the patient was in the transitional phase from cold to hot.

Chondrolysis in slipped upper femoral epiphysis. Long-term study of the aetiology and natural history.

Of 44 patients (55 hips) with slipped upper femoral epiphysis treated from 1963 to 1989, 13 (14 hips) developed chondrolysis. Eight hips had chondrolysis at the time of presentation, all in female patients who were either coloured or black and who had moderate or severe slips. The other six hips had persistent pin penetration of the joint; in five of these the pin penetrated the anterosuperior quadrant of the head. Removal of penetrating pins resulted in improvement in pain in all six hips and in the range of movement in four. Chondrolysis did not develop in any of 11 hips with transient intraoperative pin penetration. In hips with chondrolysis maximum joint-space narrowing developed within the first year; improvement in joint space and range of movement continued for up to three years after maximal involvement. At an average follow-up of 13.3 years no patient had pain but five hips were stiff.

Imaging in children with spinal tuberculosis. A comparison of radiography, computed tomography and magnetic resonance imaging.

We compared the usefulness of radiography, CT and MRI in 25 children with spinal tuberculosis. Radiography provided most of the information necessary for diagnosis and treatment. Axial CT was the most accurate method for visualising the posterior bony elements. Sagittal MRI best showed the severity and content of extradural compression and helped to differentiate between an abscess and fibrous tissue. The main value of CT and MRI is in the preoperative evaluation of the small proportion of patients who require surgical treatment for paraplegia.

Remodelling of angular deformity after femoral shaft fractures in children.

We reviewed 28 children with unilateral middle-third fractures of the femoral shaft who had an angular deformity after union of 10 degrees to 26 degrees. At an average follow-up of 45 months (20 to 66), we measured remodelling of the proximal physis, the distal physis and the femoral shaft. The average correction was 85% of the initial deformity. We found that 74% of correction occurred at the physes and only 26% at the fracture site. Neither the direction nor the magnitude of the angulation much influenced the degree of remodelling. Younger children remodelled only a little better than older children. We conclude that in children under 13 years of age, malunion of as much as 25 degrees in any plane will remodel enough to give normal alignment of the joint surfaces.

Chronic granulomatous disease presenting with osteomyelitis: favorable response to treatment with interferon-gamma.

A 3-year-old boy with chronic granulomatous disease presented with abscesses related to underlying osteomyelitis. Treatment with appropriate antibiotics resulted in resistance of the organisms. Treatment with interferon-gamma was encouraging in that it caused the osteomyelitis to heal and prevented its relapse when used as long-term prophylaxis.

The unstable hip and mid-lumbar myelomeningocele.

We reviewed 55 patients with mid-lumbar myelomeningocele (L3 and L4) first seen over a 17-year period from 1970 to 1986 and followed up for an average of ten years. We assessed a number of factors which might affect hip stability and ability to walk, recording the natural history of clinical and radiological hip deformity. Two-thirds of the hips had become dislocated or subluxed by the end of the first year of life, involving 86% of hips in patients with an L3 level and 45% of those with an L4 level. All the hips that developed instability secondary to muscle imbalance did so within the first year. The neurological level was the most significant determinant of walking ability: all patients with L4 neurological levels could walk but only one-third of those with L3 lesions could do so. Hip stability, intelligence quotient and fixed deformity did not influence walking ability.

Treatment of chronic granulomatous disease with recombinant gamma interferon.

Chronic granulomatous disease is a rare, primary immunodeficiency associated with serious bacterial and fungal infections caused by phagocytic defects of oxidative metabolism. To date the mainstay of management has been aggressive treatment of infections and the use of prophylactic antibiotics. Two patients, who showed remarkable clinical improvement when treated with recombinant gamma interferon, are reported. Both have been on treatment for at least 18 months and have continued to thrive and remain free of infections.

Calcaneus deformity in the ambulant patient with myelomeningocele.

We reviewed our experience of tibialis anterior transfer and anterior release for calcaneus deformity in 46 feet of 26 ambulant patients with myelomeningocele. At an average follow-up of 8.4 years (2 to 17.6) there were 89% who had satisfactory results; 64% of the patients having tibialis anterior transfers were able to stand on their toes. Hip abductor power was a good predictor of a functional transfer. Pre-operative trophic ulceration of the heel increased from 3.2% to 33% if surgery was delayed. Secondary deformities, two-thirds of them into valgus, developed in 76% of feet.

Fracture-separation of the distal humeral epiphysis.

We have reviewed 12 cases of fracture-separation of the distal humeral epiphysis, three of which were initially misdiagnosed as fractures of the lateral condyle and one as an elbow dislocation. Cubitus varus deformity is as common after this fracture-separation as it is following supracondylar fracture, and is most common in children under two years of age. Closed reduction and simple immobilisation is adequate for the older child, but we recommend for those under two years of age that closed reduction should be followed by percutaneous pinning, so that the carrying angle can be assessed immediately after reduction. If the elbow is then in varus the wires should be removed, reduction repeated and treatment by straight lateral traction used to maintain a valgus carrying angle.

Neonatal osteomyelitis.

Thirty-four neonates with osteomyelitis were reviewed. The hip (19) was the most common site involved. Swelling and pseudoparalysis were the most significant local signs. Radiographic abnormalities, such as metaphyseal rarefaction and/or joint subluxation were found on the initial radiographs in 18 of the 19 hips involved. All patients were treated with antibiotics and all infections involving joints were drained surgically. Good results were achieved in 75% of all sites and in 68% of hips.

Diaphyseal primary subacute osteomyelitis in children.

Six patients with subacute diaphyseal osteomyelitis of 200 with acute osteomyelitis who were seen and treated at the Red Cross Children's Hospital in a 3-year period (1985-1987) are reported. All six patients had a history of a minimum of 2 weeks' duration and the radiographic picture of a linear periosteal reaction, which was either single or laminated. This radiographic picture was indistinguishable from round cell tumors of bone. The final diagnosis was established by a histology consistent with a subacute osteomyelitis. In two patients, a positive culture of Staphylococcus aureus was obtained. All of the patients healed after treatment with cloxacillin. Radiographic resolution was noted in all patients within 6 months of treatment.

Severe disseminated staphylococcal disease associated with osteitis and septic arthritis.

We reviewed the records of 1,156 patients treated for acute staphylococcal osteitis or septic arthritis over a 12-year period; 38 had been critically ill with evidence of multiple-organ involvement and 30 (79%) had features of the toxic shock syndrome. The mortality rate of these 38 patients was 13% and the long-term orthopaedic complication rate was 39%. The diagnosis and management of patients with osteitis or septic arthritis, disseminated staphylococcal disease, and the toxic shock syndrome is discussed.