ABC of sports medicine. Management of the acutely injured joint

Is lateral ankle sprain of the child and adolescent a myth or a reality? A systematic review of the literature

BACKGROUND

Ankle trauma in children and adolescents is the most common orthopedic injury encountered in pediatric trauma. It has long been recognized that a lateral ankle injury in this population is often a Salter and Harris type I fracture of the distal fibula (SH1). The purpose of this study is to confirm the existence of a lateral ankle sprain and to report the incidence of each pathology of the lateral ankle compartment: SH1 fracture, ATFL injury, and osteochondral avulsions.

METHODS

A systematic review of the literature is done using the database provided by PubMed and Embase. All articles reporting the incidence of imaging modality-confirmed lateral ankle injury (SH1, ATFL injury, osteochondral avulsion) in children and adolescents were included. Exclusion criteria were the following: case reports or articles with less than ten subjects, unspecified imaging modality and articles unrelated to lateral ankle lesions. Thus, 237 titles and abstracts were selected, 25 were analyzed thoroughly, and 11 articles were included for final analysis.

RESULTS

SH1 fractures were found in 0-57.5% of the cases in all series and 0-3% in the most recent series. A diagnosis of an ATFL injury was found in 3.2-80% and an osteochondral avulsion of the distal fibula in 6-28.1%. The most recent series report 76-80% and 62% for ATFL injury and osteochondral avulsion respectively.

CONCLUSIONS

There is a non-negligible incidence of ATFL sprains and fibular tip avulsions in patients with a suspected SH1 fracture of the distal fibula. According to recent evidence and MRI examinations, the most common injuries of the pediatric ankle are ATFL sprain and osteochondral avulsions. This should be taken into consideration in daily practice when ordering radiological examination and deciding on treatment modalities.

[Ankle injury without fracture in children: cast immobilization versus symptomatic treatment. Impact on absenteeism and quality of life]

Treatment methods for ankle injury in children are numerous and have comparable results. The impact on absenteeism and quality of life is an interesting criterion to consider in order to help doctors in their initial treatment choice.

OBJECTIVE

The objective of this study was to compare two therapeutic strategies for ankle injury without fracture in children in terms of the impact on school absenteeism, parents' professional absenteeism, and quality of life. The strategies compared were cast immobilization of the ankle and a purely symptomatic treatment with no immobilization.

MATERIALS AND METHOD

We conducted a prospective, comparative, and randomized study. The population comprised children between 8 and 15 years of age, consulting for a first episode of ankle injury in a pediatric-emergency department of a hospital center in Marseille, France. A clinical and radiographical report was systematically done. Children were seen after 1 week to provide the clinical monitoring, assess the child's and parents' absenteeism, and assess the quality of life.

RESULTS

Sixty-two patients were studied. There was no difference in clinical progression after 7 days between the two treatment groups. Quality of life was also comparable. However, the children's absenteeism and the parents' absenteeism were higher in the casted group.

Magnetic resonance assessment of inversion ankle injuries in children

A cohort of ten children with X-ray negative inversion ankle injuries were studied using Magnetic Resonance Imaging. The images obtained were scored on six pathological criteria. Despite all ten having normal plain radiographs, 50 per cent were found to have direct evidence of growth plate injury. Seventy per cent of the cohort had periosteal elevation including all those with evidence of growth plate injury. This study supports previous work which suggested that children with 'X-ray' negative acute inversion ankle injuries who exhibited the clinical signs of injury to their lower fibular growth plate most probably have an undisplaced Salter-Harris Type 1 fracture of this structure, despite normal radiographs.