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Biomedical subjects

Pierre Moens

Publications and source records attributed to Pierre Moens.

8 recordsLinked to original sources
PubMed2006

Serial bone scintigraphy in Legg-Calvé-Perthes disease: correlation with the Catterall and Herring classification.

Radiographic classifications in Legg-Calvé-Perthes disease are difficult to use in the early stage of the disease. Changes on bone scintigraphy (revascularization versus recanalization pathway) precede the radiographic changes. Our purpose was to study the correlation between serial bone scintigraphy and radiographic classifications in Legg-Calvé-Perthes disease. In 86 patients, 95 hips that presented with Legg-Calvé-Perthes disease in the early stage were followed with serial bone scintigraphy and radiographs. Forty-four hips showed recanalization: pathway A on bone scintigraphy. Of these hips 96% were classified as Herring A or B and 66% as Catterall 2. Thirty-five hips showed revascularization: pathway B on bone scintigraphy. Of this group 82.8% were classified as Herring C and 17.1% as Herring B. All pathway B hips have Catterall 3 or 4. Sixteen hips showed pathway C: regression from pathway A to pathway B. They presented in 56% of cases with Herring B, 44% with Herring C, and in 81% with Catterall 3 or 4 classifications. We can conclude that there is a significant correlation between the vascularization pattern and the radiographic classification of Herring and Catterall.

Child, Preschool↗
PubMed2004

Lateral shelf acetabuloplasty in the early stage of Legg-Calvé-Perthes disease with special emphasis on the remaining growth of the acetabulum: a preliminary report.

This study reports on the preliminary results in 43 patients with an early stage of unilateral Legg-Calvé-Perthes disease, treated with a shelf acetabuloplasty. The mean postoperative follow-up was 3.7 years (1.3-6.2 years). The results suggest an improved outcome in children older than 5 years of age at onset. According to the Stulberg classification, 16 hips were classified as Stulberg 2, 19 hips as Stulberg 3 and eight hips as Stulberg 4. The acetabular size, which is a measurement of the length of the acetabulum relative to the size of the shelf, increased from 48.86 to 69.13%. This reflects an incorporation of the shelf-graft into the pelvis as a result of continued growth of the lateral acetabular structures. The coverage of the femoral head by the bony acetabulum increased from 68.51 to 73.83%. The acetabular cover increases in children younger than 8 years of age and decreases in patients older than 8 years. We suggest that shelf acetabuloplasty can be considered as an appropriate surgical treatment for children older than 5 years of age, with severe Legg-Calvé-Perthes disease.

Acetabulum↗
PubMed2003

Percutaneous epiphysiodesis for leg length discrepancy.

This study presents a retrospective evaluation of 57 patients who underwent a percutaneous epiphysiodesis for leg length discrepancy. Of these patients, 68.5% presented with a good result with a final leg length discrepancy of less than 1.5 cm, 14% with a fair result with a discrepancy of between 1.5 and 2 cm, and 17.5% showed a poor result with a leg length discrepancy of more than 2 cm. The percutaneous epiphysiodesis was found to be a safe and reliable technique. There were very few technical errors. The causes of failure were analyzed and compared with a previous study from the same department. Error in timing remains the main problem.

Adolescent↗
PubMed2003

Legg-Calvé-Perthes disease in patients under 5 years of age does not always result in a good outcome. Personal experience and meta-analysis of the literature.

This study attempted to analyze objectively the long-standing impression that children under 5 years of age, who have Legg-Calvé-Perthes disease, generally do well. Thirty patients, with 36 hips and onset of disease prior to their fifth birthday were reviewed at skeletal maturity. More than 50% of the hips were classified in Catterall group 3 or 4, and Herring group C. The end evaluation by the Stulberg classification showed 44.5% good, 22.2% fair and 33.3% poor results. By the Mose rating the results were respectively 27.8% good, 30.6% fair and 41.6% poor.A meta-analysis of the literature showed a very broad spectrum of results, leading to the conclusion, first, that comparison is difficult and, second, that young age is not a free ticket to a good result.

Child, Preschool↗
PubMed2003

Temporary epiphysiodesis with Blount stapling for treatment of idiopathic genua valga in children.

Not all idiopathic genua valga in children show an innocuous evolution. If the deformity persists or increases, it can cause a long-term cosmetic or functional problem. The problem can easily be corrected, with only limited risks for complications, with temporary medial hemi-epiphysiodesis of the growth plates around the knees. This retrospective study considers the pre- and postoperative evolution of 44 patients who underwent temporary stapling of the medial femoral and tibial physes following Blount's technique. Ninety percent were satisfied and showed good correction of the knee alignment. Four patients were not satisfied with the result, owing to recurrence of the valgus deformity; two of them had a good result after revision surgery. The condition was assessed by measuring clinically the intermalleolar distance and the radiological hip-knee-ankle angle. Average age at the time of surgery was 12 years six months for girls and 13 years eight months for boys. Pre-operative evaluation of skeletal age on radiographs of the hand is advised. There is a rebound phenomenon after hardware removal, with an average recurrence of the valgus deformity of 4 degrees. Blount stapling appears as a reliable method for treatment of idiopathic genua valga in children, with satisfactory results and few complications.

Adolescent↗
PubMed2002

Avascular necrosis of the talus in children with haemophilia.

Patients who have haemophilia often present with joint problems. Haemarthrosis can occur spontaneously or after minor trauma. Later, degenerative changes can cause pain and loss of motion. Avascular necrosis of the talus has a high incidence after serious trauma. Furthermore, avascular necrosis of the talus has been associated with multiple systemic conditions. The association of haemophilia and avascular necrosis of the femoral head has been described. This study reports three cases (four ankles) where we suspect an avascular necrosis of the talus in children with haemophilia. To the authors' knowledge, the possible association of haemophilia and avascular necrosis of the talus has not yet been described in children.

Adolescent↗