Effectiveness of bone marrow aspirate concentrate (BMAC) as adjuvant therapy in the surgical treatment of congenital pseudoarthrosis of the tibia: a retrospective comparative study

Congenital pseudoarthrosis of the tibia (CPT) is a rare disease characterised by the onset of bone anomalies or fractures, leading to deformities in paediatric patients. The aetiology of this pathology is unknown. The main theories include the presence of hamartomatous tissue related to Neurofibromatosis type 1, vascularisation deficit of the periosteum and alterations in the numbers and functions of the osteoblasts and osteoclasts in loco. Surgical treatment generally requires multiple operations during the patient's childhood and adolescence. The best outcomes seem to occur when using intramedullary nailing, vascularised fibular transplant and external fixation with the Ilizarov technique. The purpose of this paper is to evaluate the effectiveness of in-situ injections of Bone Marrow Aspirate Concentrate (BMAC) as an adjuvant therapy for congenital pseudoarthrosis of the tibia in patients treated with external fixation and that of radiographic healing over time compared to external fixation treatment alone. We performed a retrospective review of clinical and radiographic records of patients affected by CPT and treated in the Paediatric Orthopaedics and Traumatology Department of the Gaetano Pini Orthopaedic Institute with in-situ injections of bone marrow aspirate concentrate (BMAC) on the pseudoarthrosis site, in addition to pseudoarthrosis site excision and application of circular external fixator frame in compression (Group A). The time needed to reach the radiological consolidation of the resection site was recorded and compared to that needed for patients treated with only pseudoarthrosis site excision and application of circular external fixator frame in compression (Group B). There is a statistically relevant improvement of healing time in patients affected by congenital pseudoarthrosis of the tibia treated with external fixation and bone marrow aspirate concentrate compared to patients affected by the same pathology treated with external fixation only. Injection of MSC in the pseudoarthrosis site after focus removal in combination with circular external fixation achieves faster bone healing compared with external fixation only, and the lower refracture percentage may be associated with the better quality and structure of the new bone. However, it would be desirable to have a longer followup to determine if the results of the BMC as adjuvant therapy will hold up over time.

Retrospective, multicenter evaluation of complications in the treatment of diaphyseal femur fractures in pediatric patients

INTRODUCTION

Femoral shaft fractures are the commonest major pediatric fractures. For generations, traction and casting were the standard method of treatment for children. However, over the past two decades there has been growing recognition of the advantages of fixation and rapid mobilization.

METHODS

A prospective multicenter study was conducted at four Italian centers of reference for pediatric fractures (January 2005 to December 2014). The study involved 62 patients of both sexes, between 6 and 14 years of age, with closed femoral shaft fractures. The aim was to find out more about the short-term complications of titanium elastic nailing in diaphyseal femur fractures in children in order to reduce them.

RESULTS

The commonest complication observed in our study was pain at the nail entry point (24.19%) due to a local inflammatory reaction. After 1 year, 3.22% had limbs of different lengths. Proximal migration occurred in 1.61% of cases.

DISCUSSION

Over the last two decades, the treatment of femoral shaft fractures in pediatric patients has developed to include internal fixation using Titanium Elastic Nails (TEN). We only observed a few complications in our study, most of which were minor and associated with the surgical technique employed, particularly during the initial phase of the surgeon's learning curve.

CONCLUSIONS

TEN are an excellent internal fixation system if used by an expert surgeon and have a very low rate of complications. None of them produced permanent damage in the patients. In older children weighing more than 50 kg, alternative techniques such as subtrochanteric nailing, plates, or external fixation are advisable.

[Evaluation of the combined treatment of oral viscosupplementation with hyaluronic acid intra-articular injection on symptomatic knee osteoarthritis]

OBJECTIVES

Numerous clinical evidences support the treatment of knee OA (KOA) with oral formulations based on hyaluronic acid (HA) and chondroitin sulfate (CS). The formulation aim of the present study (IA) combines a hydrolyzed low molecular weight collagen matrix providing high content of depolymerised HA and CS, with methylsulfonylmethane (MSM), Manganese and a milk glycoprotein. The goal was to evaluate whether combined treatment with intra - articular injection of HA and AI is more effective than treatment with HA only for the symptomatic treatment of knee OA.

MATERIALS AND METHODS

Randomized, double-blind, placebo-controlled clinical trial. Patients (nr = 100), after undergoing an intra-articular injection with HA, were randomized to receive IA or placebo for 3 months. The efficacy of the treatment was assessed by measuring at baseline, 1 and 3 months, the values of the VAS pain scale, the Knee injury and Osteoarthritis Outcome Score, the Tegner Lysholm Knee Scoring Scale, Lequesne algofunctional index and the consumption of NSAIDs and analgesics.

RESULTS

The treatment group HA + IA showed a positive trend compared to the group treated with HA only for all the efficacy variables observed, in particular regarding the VAS and the analgesic consumption.

CONCLUSIONS

The evidences obtained in this study point out that the oral viscosupplementation with the formulation aim of the present study (IA) represents a valuable, manageable, effective and well tolerated aid, useful to maintain and extend the benefits obtained with intra - articular injection of HA, helping to significantly reduce the use of painkillers by patients.

Role of MRI (magnetic resonance imaging) versus conventional imaging for breast cancer presurgical staging in young women or with dense breast

AIMS

The role of magnetic resonance imaging (MRI) in the local staging of breast cancer is currently uncertain. The purpose of this prospective study is to evaluate the accuracy of preoperative MRI compared to conventional imaging in detecting breast cancer and the effect of preoperative MRI on the surgical treatment in a subgroup of women with dense breasts, young age, invasive lobular cancer (ILC) or multiple lesions.

METHODS

Between January 2006 and October 2007, 91 patients with newly diagnosed breast cancer underwent preoperative clinical breast examination, mammography, bilateral breast ultrasonography and high-resolution breast MRI. All patients had histologically verified breast cancer. The imaging techniques were compared using the final pathological report as gold standard.

RESULTS

The sensitivity of MRI for the main lesion was 98.9%, while for multiple lesions sensitivity was 90.7% and specificity 85.4%. After preoperative MRI, 13 patients (14.3%) underwent additional fine needle/core biopsies, 9 of whom had specimen positive for cancer. Preoperative MRI changed the surgical plan in 26 patients: in 19.8% of the cases breast conservative surgery was converted to mastectomy and in 7.7% of the patients a wider excision was performed. At a mean follow-up of 48 months, 2 local recurrences occurred (local failure rate = 2.5%).

CONCLUSIONS

Enhanced sensitivity of breast MRI may change the surgical approach, by increasing mastectomy rate or suggesting the need of wider local excision. MRI can play an important role in preoperative planning if used in selected patients with high risk of multifocal/multicentric lesions. However, the histologic confirmation of all suspicious findings detected by MRI is mandatory prior to definite surgery.