Introduction: Unicompartmental knee arthroplasty (UKA) and valgus high tibial osteotomy (HTO) are two options for isolated medial femorotibial osteoarthritis in genu varum. In the absence of registries for osteotomies and for arthroplasty in the knee, epidemiological data are hard to obtain in France. We therefore performed a retrospective study, with the aims of: 1) estimating UKA and HTO survival without revision by total knee arthroplasty (TKA), and 2) assessing risk factors for revision according to treatment group.
View Article and Find Full Text PDFObjective: To date, breast reconstruction after mastectomy essentially uses flap- or prosthetic-based surgery. Autologous fat grafting (AFT) largely used in breast conservative surgery is considered an additional technique in breast reconstruction. The aim of this retrospective study was to report our experience of AFT as a stand-alone method for immediate breast reconstruction.
View Article and Find Full Text PDFPlast Reconstr Surg Glob Open
May 2020
Unlabelled: Prosthetic reconstruction in previously irradiated breasts has been associated with a higher risk of complications. Here we describe the surgical and cosmetic outcome of our breast reconstruction process based on primary fat grafting combined with prosthetic placement.
Methods: In this multicenter retrospective study, 136 patients who underwent mastectomy and external chest wall radiotherapy between 2014 and 2018 were benefited from chest wall lipofilling and silicone implant placement were chosen.
We report FDG PET/CT images of a 63-year-old woman referred for characterization of osteolytic lesions of the cervical spine. This patient with chronic renal failure had a history of follicular thyroid carcinoma with undifferentiated cells, treated by a total thyroidectomy, completed by radioactive iodine in 2017. Because of cancer history, a FDG PET/CT was performed and showed multiple moderately hypermetabolic osteolytic lesions of the spine from C3 to T1, with joint erosion on CT.
View Article and Find Full Text PDFNeuropsychiatric symptoms, such as avolition, apathy, and anhedonia, precede the onset of debilitating motor symptoms in Huntington's disease (HD), and their development may give insight into early disease progression and treatment. However, the neuronal and circuit mechanisms of premanifest HD pathophysiology are not well-understood. Here, using a transgenic rat model expressing the full-length human mutant HD gene, we find early and profound deficits in reward motivation in the absence of gross motor abnormalities.
View Article and Find Full Text PDFAlthough the term augmented reality appears increasingly in published studies, the real-time, image-guided (so-called 'hands-free' and 'heads-up') surgery techniques are often confused with other virtual imaging procedures. A systematic review of the literature was conducted to classify augmented reality applications in the fields of maxillofacial surgery. Publications containing the terms 'augmented reality', 'hybrid reality', and 'surgery' were sought through a search of three medical databases, covering the years 1995-2018.
View Article and Find Full Text PDFBreast reconstruction by prosthesis remains the most used in the world and even tends to increase again at the expense of musculo-cutaneous flaps since the systematic use, in recent years, of adipocytes grafts (lipofilling) before and/or after in place of the implant. This simpler technique is often preferred by patients who want to avoid scars and pain away from the chest area. The use of different implant forms, fat injection, abdominal advancement flaps, biological or synthetic matrices can significantly improve the results of these reconstructions in secondary or immediate.
View Article and Find Full Text PDFChronic or acute exposure to delta-9-tetrahydrocannabinol (THC), the main psychoactive compound in cannabis, has been associated with numerous neuropsychiatric side-effects, including dysregulation of emotional processing and associative memory formation. Clinical and preclinical evidence suggests that the effects of THC are due to the ability to modulate mesolimbic dopamine (DA) activity states in the nucleus accumbens (NAc) and ventral tegmental area (VTA). Nevertheless, the mechanisms by which THC modulates mesolimbic DA function and emotional processing are not well understood.
View Article and Find Full Text PDFSeveral impulse control disorders such as ADHD, mania, personality disorders or substance abuse share common behavioural traits, like impulsiveness, risk-taking or inflexible behaviour. These disorders are treated with drugs targeting dopamine (DA) and/or serotonin (5-HT). However, the patient's monoamine imbalance that these neurotransmitters compensate is unclear.
View Article and Find Full Text PDFInflexible behavior is a hallmark of several decision-making-related disorders such as ADHD and addiction. As in humans, a subset of healthy rats makes poor decisions and prefers immediate larger rewards despite suffering large losses in a rat gambling task (RGT). They also display a combination of traits reminiscent of addiction, notably inflexible behavior and perseverative responses.
View Article and Find Full Text PDFUnlabelled: The augmented reality on smart glasses allows the surgeon to visualize three-dimensional virtual objects during surgery, superimposed in real time to the anatomy of the patient. This makes it possible to preserve the vision of the surgical field and to dispose of added computerized information without the need to use a physical surgical guide or a deported screen.
Technique: The three-dimensional objects that we used and visualized in augmented reality came from the reconstructions made from the CT-scans of the patients.
Background: The widespread innervation of dopamine (DA) and serotonin (5-HT) systems in cortical and subcortical regions suggests that their biochemical interactions can occur in multiple regions directly or indirectly via neurobiological networks.
New Method: The present study was aimed at validating a neurochemical approach of monoaminergic function based on inter-individual variability of monoamine tissue contents in various cortical and subcortical areas. We focused on monoamines metabolism and examined correlations within and between these monoaminergic systems in selected regions for the metabolites 3,4-dihydroxyphenylacetic acid (DOPAC) and/or homovanillic acid (HVA) and 5-hydroxyindole acetic acid (5-HIAA) alone or with respect to the turnover indexes DOPAC/DA, DOPAC+HVA/DA and 5-HIAA/5-HT.
Plast Reconstr Surg Glob Open
December 2013
Metastatic breast carcinoma can mimic benign cutaneous lesions. Breast surgeons should be aware of skin manifestations to be able to distinguish them and set a proper therapeutic strategy. A clinical case of cutaneous lesion after breast cancer is presented.
View Article and Find Full Text PDFA major challenge of decision-making research in recent years has been to develop models of poor decision-making to identify its neural bases. Toward this goal, we developed a Rat Gambling Task that discerns good and poor decision-makers in a complex and conflicting situation such as the human Iowa Gambling Task. Nothing is known about the role of the monoaminergic modulatory systems in shaping these phenotypes.
View Article and Find Full Text PDFAim: To identify predictors for infiltrating carcinoma and lymph node involvement, before immediate breast reconstructive surgery, in patients with an initial diagnosis of extensive pure ductal carcinoma in situ of the breast (DCIS).
Patients And Methods: Between January 2000 and December 2009, 241 patients with pure extensive DCIS in preoperative biopsy had underwent mastectomy. Axillary staging (sentinel node and/or axillary dissection) was performed in 92% (n = 221) of patients.
The ability to discern temporally pertinent environmental events is essential for the generation of adaptive behavior in conventional tasks, and our overall survival. Cannabinoids are thought to disrupt temporally controlled behaviors by interfering with dedicated brain timing networks. Cannabinoids also increase dopamine release within the mesolimbic system, a neural pathway generally implicated in timing behavior.
View Article and Find Full Text PDFSurgical management of breast cancer has evolved considerably over the last two decades. There has been a major shift toward less-invasive local treatments, from radical mastectomy to breast-conserving therapy (BCT) and oncoplastic breast surgery (OBS). In order to investigate the efficacy of each of the three abovementioned methods, a literature review was conducted for measurable outcomes including local recurrence, survival, cosmetic outcome, quality of life (QOL), and health economy.
View Article and Find Full Text PDFThe dopamine (DA), noradrenalin (NA) and serotonin (5-HT) monoaminergic systems are deeply involved in cognitive processes via their influence on cortical and subcortical regions. The widespread distribution of these monoaminergic networks is one of the main difficulties in analyzing their functions and interactions. To address this complexity, we assessed whether inter-individual differences in monoamine tissue contents of various brain areas could provide information about their functional relationships.
View Article and Find Full Text PDFBackground: The aims of the study were to investigate the factors associated with not having breast reconstruction following mastectomy and to assess patient satisfaction with information on reconstruction.
Patients And Methods: We analysed a historical cohort of 1937 consecutive patients who underwent mastectomy at Institut Curie between January 2004 and February 2007. Their sociodemographic and clinicobiological characteristics were recorded in a prospective database.
Prog Neuropsychopharmacol Biol Psychiatry
July 2014
Environmental and interoceptive cues are theorized to serve as 'signals' that motivate drug seeking and effects that may be augmented in the withdrawn state. Phasic dopamine release events are observed in the nucleus accumbens in response to such motivational salient stimuli and are thought to be necessary for drug-associated cues to trigger craving. We recently demonstrated how dopamine neurons encode stimuli conditioned to a negative event, as might occur during conditioned withdrawal, and stimuli predicting the avoidance of negative events, as might occur as an addict seeks out drugs to prevent withdrawal.
View Article and Find Full Text PDFPlast Reconstr Surg Glob Open
July 2013
A woman in her 50s underwent delayed bilateral Poly Implant Prothèse implant reconstruction following mastectomy for breast cancer. Symptoms of implant rupture developed 43 months after surgery with an erythematous rash on her trunk. The rash then spread to her reconstructed breast mounds.
View Article and Find Full Text PDFBackground: The role of nipple-sparing mastectomy for breast cancer is controversial, as there is concern regarding its oncologic safety and complication rate. The authors reviewed the literature to quantify the incidence of occult nipple malignancy in breast cancer, identify the factors influencing occult nipple malignancy, quantify locoregional recurrence rates, and quantify nipple-sparing mastectomy complication rates.
Methods: A search of the literature was performed using PubMed.