Abstracts accepted for the 2021-2023 French Orthopaedic and Traumatology Society meetings: Proportion of women submitters.

Background: Women are underrepresented in orthopaedic and trauma surgery worldwide, with proportions of 4%-17% across countries and 9.1% in France. The annual meeting of the French Society for Orthopaedic and Trauma Surgery (SOFCOT) provides opportunities for quantifying the representation of women, which has not yet been accurately evaluated.

Methods for three-dimensional characterization of the acetabulum prior to pelvic reorientation osteotomy: a scoping review.

Periacetabular osteotomy is the gold standard treatment for acetabular dysplasia. The great variability of acetabular dysplasia requires a personalized preoperative planning improved by 3D reconstruction and computer-assisted surgery. To plan the displacement of the acetabular fragment by a pelvic osteotomy, it is necessary to define a reference plane and a method to characterize 3D acetabular orientation.

Improvements in Pediatric Bone Loss Reconstruction With the Induced Membrane Technique.

Background: The induced membrane technique is now widely used for pediatric diaphyseal bone loss due to various etiologies. Although consolidation rates remain satisfactory, complications, and healing delays may occur requiring additional procedures. We studied a series of induced membrane bone reconstructions in which the second stage included an embedded endomembranous non vascularized fibular shaft, in addition to iliac bone grafts.

3D pre-operative planning and patient-specific guides for re-directional peri-acetabular osteotomy in children and adolescents.

Surgical procedures to correct hip dysplasia associated with subluxation or dislocation of the femoral head are complex. The 3D geometric abnormalities of the acetabulum and proximal femur vary across patients. We, therefore, suggest a patient-specific surgical treatment involving computer-assisted 3D planning of the peri-acetabular osteotomies, taking into account the femoral head position; 3D printing of patient-specific guides for the cuts, repositioning, and fixation; and intra-operative application of the simulated displacements with their fixation.

"Unhappy triad" of the trauma elbow in children: Diagnosis, classification, and mid-term outcomes.

Background: The aim of this study was to describe the epidemiology, physiopathology, and outcomes of elbow "unhappy triad" trauma in children, combining a posterior dislocation, a proximal radius fracture, and a third lesion (i.e. bony or capsuloligamentous injury).

Long-term outcomes of hip reconstruction surgery in children with GMFCS III diplegic cerebral palsy.

Introduction: The results of hip reconstruction surgery are known for non-walking (GMFCS IV and V) and walking (GMFCS I and II) patients. Few studies deal with GMFCS III patients in isolation. Their intermediate functional status can be deteriorated by asymmetrical contractures, hip dislocation, multi-level deformities of the lower limbs, leading to motor function degradation, and possibly losing their ability to walk.

Postnatal Diagnostic Workup in Children With Arthrogryposis: A Series of 82 Patients.

Objective: To describe a postnatal series of patients with arthrogryposis multiplex congenita by the causal mechanisms involved.

Methods: In this single-center study, the local data warehouse was used to identify patients with arthrogryposis multiplex congenita. Patients were classified into different etiologic groups.

Can Chiari Osteotomy Favorably Influence Long-term Hip Degradation in Multiple Epiphyseal Dysplasia and Pseudoachondroplasia?

Background: Multiple epiphyseal dysplasia (MED) and pseudoachondroplasia (PSACH) are congenital skeletal disorders characterized by irregular epiphyses, mild or severe short stature and early-onset osteoarthritis which frequently affect the hips. The current study evaluates the long-term results of the Chiari osteotomy in MED and PSACH patients.

Methods: Twenty patients (14 MED and 6 PSACH) were retrospectively included.

Kinematics after unilateral femoral derotation osteotomy in children with diplegic cerebral palsy.

Introduction: Femoral derotation osteotomy (FDO) is a treatment option in children and adolescents with cerebral palsy who have transverse plane deviations in their lower limbs. When the transverse kinematic deviations are asymmetric, the osteotomy indication can be unilateral.

Hypothesis: Unilateral FDO has a kinematic effect on ipsilateral transverse plane deviations along with those of the pelvis and contralateral side.

Non-vascularized toe phalanx transfer for correction of severe clinodactyly of the thumb in Rubinstein-Taybi syndrome.

In Rubinstein-Taybi syndrome, patients may have a particularly severe clinodactyly of the thumb. We evaluated a new method for correction of these severe clinodactylies using non-vascularized toe phalanx transfer as a replacement for the abnormal delta phalanx. Results of the new technique are presented, together with those of an osteotomy technique.

Long term results of the revisited Meary closing wedge tarsectomy for the treatment of the fixed cavo-varus foot in adolescent with Charcot-Marie-Tooth disease.

Background: Various techniques have been proposed for the treatment of cavovarus feet (CVF). The aim of this study was to report outcomes of the revisited Meary's dorsal closing wedge tarsectomy for fixed CVF secondary to Charcot-Marie-Tooth (CMT) disease.

Methods: All CVF operated on between 1977 and 2011 were included.

Long-term results of ankle arthrodesis in children and adolescents with haemophilia.

Introduction: Ankle arthrodesis in patients with haemophilia is a joint-non-preserving treatment option often resulting in substantial pain relief and termination of haemarthrosis by osseous consolidating of the joint. However, limited data are available regarding ankle arthrodesis in young patients.

Aim: The aim of this study was to evaluate the long-term clinical and radiographic results with a minimum follow-up of ten years in children with haemophilia who underwent ankle arthrodesis.

The Induced Membrane Technique for Bone Defects of Critical Size After Infection in Children: A Report of 3 Consecutive Cases.

Case: We report 3 consecutive cases of bone defects of critical size after chronic osteomyelitis in children that were treated with the induced membrane technique, in 2 girls and a boy 7 months to 7 years old. All defects were diaphyseal. The length of resection was from 4 to 12 cm (35% to 55% of the total bone length).

Case reports: Treatment of traumatic triradiate cartilage epiphysiodesis: what is the role of bridge resection?

Background: Acetabular fractures are rare in children and can be complicated by premature fusion of the triradiate cartilage resulting in secondary acetabular dysplasia. Early recognition and treatment of a physeal bar in this location can be difficult. The purpose of this case report was to investigate whether early intervention could restore acetabular growth and prevent secondary acetabular dysplasia as measured on plain radiographs.

Extensor tendon injuries in children.

Introduction: This study retrospectively analyzes primary extensor tendon repairs in children younger than 15 years.

Methods: Exclusion criteria were skin loss, devascularization, fractures, or flexor tendon injuries. Fifty patients who had sustained extensor tendon laceration with 53 digits injured were available for review.