Publications by authors named "Chalopin A"

Introduction: Anterior tibial intercondylar eminence fractures (ATIEF) of the knee are rare in children. They are associated with prefracture intraligamental distention of the anterior cruciate ligament (ACL).

Objective: The objective of this study was to evaluate the subjective and objective clinical results of an arthroscopic surgical technique by suture-fixation of the fracture and tensioning of the ACL through hollowing of the tibial footprint.

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Article Synopsis
  • The study analyzed outcomes from 125 patients who had distal femur replacements using the French paradox technique, focusing on implant success and patient functionality over time.
  • Key findings indicate low rates of implant failure, with only one case of aseptic loosening after 21 years, although some patients required additional procedures due to wear and other complications.
  • Overall, the line-to-line cementation technique showed promising long-term stability and functionality, with a notable patient survival rate over the years.
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Introduction: Epidemiological studies of fractures of the spine in children are all old, mostly single-centre, with series spanning periods of 5 to 20 years.

Hypothesis: As lifestyle is constantly changing, notably with an increase in sports activities and improvements in the prevention of road and household accidents, epidemiology has likely changed.

Objective: To update the description of spinal trauma in children and adolescents compared to the existing literature.

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Introduction: Progressive bone lengthening in children can be done using an external fixator, a lengthening nail, or plate with screws. The TrueLok Hexapod System™ (TL-HEX™) is the newest hexapod external fixator on the market. We hypothesized that the TL-HEX™ can accurately correct lower limb deformities in children.

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Background: Cyclops syndrome after anterior cruciate ligament (ACL) reconstruction is due to a fibrous nodule that develops in the anterior part of the intercondylar notch and prevents full knee extension. The primary objective of this systematic literature review was to evaluate the incidence of symptomatic cyclops lesion after ACL reconstruction. The secondary objective was to identify risk factors for cyclops syndrome.

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Purpose: The goal of this study was to evaluate the anatomy of the medial patellar retinaculum and the medial patellofemoral ligament (MPFL) to provide an anatomical validation of a pediatric reconstruction technique.

Methods: Fifteen knees were dissected to study the MPFL and its relationship with the medial patellar retinaculum and the femoral insertion of the medial collateral ligament (MCL). The distances between the insertions of the MPFL of eight knees, and the patellar insertion of the MPFL and the femoral insertion of the MCL of four knees, were measured during the flexion to evaluate the isometricity of the native and reconstructed MPFL.

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Article Synopsis
  • * The study investigates Circulating Tumour Cells (CTCs) as potential biomarkers that may indicate disease progression and aims to understand how they are affected by the chemotherapy drug ifosfamide.
  • * Findings show that CTCs can be found in the bloodstream before tumors are detectable, and while ifosfamide increases CTC counts, it also slows tumor growth and reduces lung metastases.
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Purpose: Giant cell tumor of tendon sheath (GCTTS), formerly known as pigmented villonodular synovitis (PVNS), is a benign, locally aggressive, proliferative disorder of the synovium involving a joint, bursa, or tendon sheath. Treatment of GCTTS involves early surgical resection to limit articular destruction and the risk of recurrence. Synovectomy remains the treatment of choice for GCTTS, but without clear consensus to make an open or arthroscopic synovectomy and no certainty on the responsibility of surgery in the evolution towards the degenerative osteoarthritis.

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Introduction: Childhood fibular hypoplasia is a rare pathology which may or may not involve limb-length discrepancy and axial deformity in one or more dimensions. The objective of the present study was to compare the quality of the axial correction achieved in lengthening procedures by hexapodal versus monorail external fixators. The hypothesis was that the hexapodal fixator provides more precise correction.

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Hypokyphosis is currently observed in thoracic idiopathic scoliosis. The use of sublaminar bands allows a good restoration of sagittal balance of the spine. The aim of the study was to provide a middle-term radiographic analysis of patients with adolescent idiopathic scoliosis with preoperative hypokyphosis treated by posterior arthrodesis with sublaminar bands.

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The treatment objectives in congenital pseudarthrosis of the tibia are bone consolidation and a restored lower-limb axis. They are difficult to achieve, and various surgical techniques have been described, with varying results in terms of bone consolidation and complications. The present study reports clinical and radiographic results in 3 patients managed by the same original technique of transplantar intramedullary nailing using a custom-made proximal locking nail, without surgical approach or resection of the pseudarthrosis site.

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Background: Circulating tumor cells (CTCs) are biomarkers for noninvasively measuring the evolution of tumor genotypes during treatment and disease progression. Recent technical progress has made it possible to detect and characterize CTCs at the single-cell level in blood.

Content: Most current methods are based on epithelial cell adhesion molecule (EpCAM) detection, but numerous studies have demonstrated that EpCAM is not a universal marker for CTC detection because it fails to detect both carcinoma cells that undergo epithelial-mesenchymal transition (EMT) and CTCs of mesenchymal origin.

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Background: Femoral neck fractures are frequent in the elderly population and lead to high morbidity and mortality. Hemiarthroplasty is an established surgical procedure for displaced intracapsular femoral neck fractures. Post-operative infection is frequent and is potentially devastating for the patient and the healthcare services.

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Introduction: To date there is no consensus on therapeutic indications in adolescent idiopathic scoliosis (AIS) with curvature between 30° and 60° at the end of growth.

Objective: The objective of this study was to assess outcome in patients with moderate AIS.

Material And Methods: A multicenter retrospective study was conducted.

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