HPV and Other Risk Factors Involved in Pharyngeal Neoplasm-Clinical and Morphopathological Correlations in the Southwestern Region of Romania

Oropharyngeal squamous cell carcinoma (OPSCC) development is strongly associated with risk factors like smoking, chronic alcohol consumption, and the living environment, but also chronic human papilloma virus (HPV) infection, which can trigger cascade cellular changes leading to a neoplastic transformation. The prevalence of these factors differs among different world regions, and the prevention, diagnosis, and prognosis of OPSCC are highly dependent on them. We performed a retrospective study on 406 patients diagnosed with OPSCC in our region that were classified according to the tumor type, localization and diagnosis stage, demographic characteristics, risk factors, and histological and immunohistochemical features. We found that most of the patients were men from urban areas with a smoking habit, while most of the women in our study were diagnosed with tonsillar OPSCC and had a history of chronic alcoholism. During the immunohistochemical study, we analyzed the tumor immunoreactivity against anti-p16 and anti-HPV antibodies as markers of HPV involvement in tumor progression, as well as the correlation with the percentage of intratumoral nuclei immunomarked with the anti-Ki 67 antibody in serial samples. We observed that the percentage of Ki67-positive nuclei increased proportionally with the presence of intratumoral HPV; thus, active HPV infection leads to an increase in the rate of tumor progression. Our results support the implementation of strategies for OPSCC prevention and early diagnosis and can be a starting point for future studies aiming at adapting surgical and oncological treatment according to the HPV stage for better therapeutic results.

Pituitary Apoplexy in Patients with Pituitary Neuroendocrine Tumors (PitNET)

Various complications of pituitary neuroendocrine tumors (PitNET) are reported, and an intratumor hemorrhage or infarct underlying pituitary apoplexy (PA) represents an uncommon, yet potentially life-threatening, feature, and thus early recognition and prompt intervention are important. Our purpose is to overview PA from clinical presentation to management and outcome. This is a narrative review of the English-language, PubMed-based original articles from 2012 to 2022 concerning PA, with the exception of pregnancy- and COVID-19-associated PA, and non-spontaneous PA (prior specific therapy for PitNET). We identified 194 original papers including 1452 patients with PA (926 males, 525 females, and one transgender male; a male-to-female ratio of 1.76; mean age at PA diagnostic of 50.52 years, the youngest being 9, the oldest being 85). Clinical presentation included severe headache in the majority of cases (but some exceptions are registered, as well); neuro-ophthalmic panel with nausea and vomiting, meningism, and cerebral ischemia; respectively, decreased visual acuity to complete blindness in two cases; visual field defects: hemianopia, cranial nerve palsies manifesting as diplopia in the majority, followed by ptosis and ophthalmoplegia (most frequent cranial nerve affected was the oculomotor nerve, and, rarely, abducens and trochlear); proptosis (N = 2 cases). Risk factors are high blood pressure followed by diabetes mellitus as the main elements. Qualitative analysis also pointed out infections, trauma, hematologic conditions (thrombocytopenia, polycythemia), Takotsubo cardiomyopathy, and T3 thyrotoxicosis. Iatrogenic elements may be classified into three main categories: medication, diagnostic tests and techniques, and surgical procedures. The first group is dominated by anticoagulant and antiplatelet drugs; additionally, at a low level of statistical evidence, we mention androgen deprivation therapy for prostate cancer, chemotherapy, thyroxine therapy, oral contraceptives, and phosphodiesterase 5 inhibitors. The second category includes a dexamethasone suppression test, clomiphene use, combined endocrine stimulation tests, and a regadenoson myocardial perfusion scan. The third category involves major surgery, laparoscopic surgery, coronary artery bypass surgery, mitral valvuloplasty, endonasal surgery, and lumbar fusion surgery in a prone position. PA in PitNETs still represents a challenging condition requiring a multidisciplinary team from first presentation to short- and long-term management. Controversies involve the specific panel of risk factors and adequate protocols with concern to neurosurgical decisions and their timing versus conservative approach. The present decade-based analysis, to our knowledge the largest so far on published cases, confirms a lack of unanimous approach and criteria of intervention, a large panel of circumstantial events, and potential triggers with different levels of statistical significance, in addition to a heterogeneous clinical picture (if any, as seen in subacute PA) and a spectrum of evolution that varies from spontaneous remission and control of PitNET-associated hormonal excess to exitus. Awareness is mandatory. A total of 25 cohorts have been published so far with more than 10 PA cases/studies, whereas the largest cohorts enrolled around 100 patients. Further studies are necessary.

Assessment of tumoral and peritumoral inflammatory reaction in cutaneous malignant melanomas

Skin cancer is one of the most common types of cancer, with an increasing worldwide incidence in recent decades. The main risk factor for increasing the skin cancer incidence is ultraviolet (UV) radiation. Of the two major forms of skin cancer (melanomas and non-melanotic cancers), the cutaneous melanoma (CM) is the most aggressive form, causing about 80% of the deaths resulted from this type of tumor. Malignant melanoma develops through malignant transformation of melanocytes in the skin because of prolonged exposure to solar or artificial UV. The malignant transformation of the melanocytes in the skin is accompanied by the presence of a local inflammatory reaction that, in the initial stages of carcinogenesis, would oppose to tumor development. Chronic exposure to UV or other etiopathogenic factors induces chronic inflammation, which, by producing inflammatory molecules (cytokines, chemokines, prostaglandins), constitutes a tumoral microenvironment that favors carcinogenesis, tumor invasion, metastasis, and the presence of neoplastic "mutant cells" that avoid the protective action of the immune system. Using immunohistochemistry techniques, we assessed the intra- and peritumoral inflammatory infiltrate cells in CM. The chronic inflammatory infiltrate presented more intense in the peritumoral stroma compared to the intratumoral one, heterogenous, more intensely composed of lymphocytes, plasma cells, macrophages, and mast cells (MCs), the most numerous cells in the inflammatory infiltrate being T-lymphocytes, plasma cells and macrophages; B-lymphocytes and MCs were in a small number, especially intratumorally. Inflammatory cells had a direct contact with tumor cells, blood vessels, connective matrix, suggesting that the inflammatory microenvironment plays an important role in carcinogenesis, tumor invasion, local angiogenesis, and tumor metastasis.

Histopathological and immunohistochemical changes of the marginal periodontium in patients with Turner syndrome

Turner syndrome (TS) is characterized by partial or complete loss of a sexual chromosome, resulting in an incomplete development of the body, gonadic failure, cardiac and renal abnormalities, oro-dental changes, etc. In our study, we proposed to perform a histological and immunohistochemical (IHC) study of the periodontium changes in patients with TS. The biological material under study was represented by fragments of gingival mucosa harvested from 18 patients with TS who presented advanced periodontal lesions and required dental extractions. The fragments of gingival mucosa were processed by the classical histological technique of paraffin inclusion, subsequently the obtained sections being stained by the Hematoxylin–Eosin (HE) and examined under the optical microscope. For the IHC study, there were performed serial sections incubated with anti-cluster of differentiation (CD) 3, anti-CD20 and anti-CD68 antibodies for highlighting immune cells, as well as with anti-matrix metalloproteinase (MMP) 2 and anti-MMP8 antibodies for highlighting MMPs (MMP2 and MMP8) involved in the periodontal tissue lesions. In the present study, during the histological examination, there were observed morphological changes, both in the epithelium and in the gingival mucosa chorion. Epithelial changes consisted in the onset of acanthosis processes, in the thickening of the epithelium due to the increase of the spinous layer, as well as in the parakeratosis phenomenon. In the chorion, there was observed the presence of inflammatory infiltrates in various stages, presence of fibrosis (extended in some cases) and the presence of an important vascularization in some cases, with a high number of immunocompetent cells involved in the inborn immune response, but also in the adaptive one, as well as a more or less intense immunoexpression of MMP2 and MMP8. Our study suggests that TS may contribute to the development of some inflammatory processes in the marginal periodontium.

Somatostatin receptors in normal and acromegalic somatotroph cells: the U-turn of the clinician to immunohistochemistry report - a review

This is a narrative review of literature introducing somatostatin receptors (SSTRs) as part of understanding the somatotroph cells since they are positive in normal cells but also in tumoral cells as seen in somatotropinoma, a growth hormone (GH)-producing neoplasia, which causes acromegaly. They are five subtypes of SSTRs (1 to 5), which are immunohistochemically positive in different proportions in somatotropinomas. SSTR types 2 and 5 are most frequent in GH-secreting adenomas and they are both targeted by medical therapy with somatostatin analogues (SSTAs) like first generation Octreotide and Lanreotide (mainly targeting SSTR2) and second generation Pasireotide (with highest affinity for SSTR5), thus heterogeneous SSTRs configuration into the tumor explains different pattern of response to treatment and it might predict it once the SSTRs immunostaining is performed. Monoclonal antibodies are used for immunohistochemical detection of SSTRs; currently, a lack of standardization is presented, and scoring systems, such as Volante, H-score or human epidermal growth factor receptor 2 (HER2)-score, are applied. Immunoreactive markers like SSTRs are the U-turn in clinical practice regarding somatotropinomas since the configuration of subtypes 2 and 5 explains the responsiveness to medical therapy like SSTA. Further achievement of disease control is imperiously necessary because acromegaly has an increased rate of morbidity and mortality.

Biochemical Parameters in Patients Using Teriparatide

Teriparatide (TPT) is the active 1-34 amino acid sequence with osteoanabolic use for severe osteoporosis. Our aim is to analyze the biochemical and clinical profile of patients treated with TPT based on Romanian protocol. The inclusion and exclusion criteria are based on specific country protocol for TPT 20 �g/day, for 2 years, once in life time based on self administration. This is a transversal study including data of a tertiary centre of endocrinology on patients who signed the informed consent. This is a real life study, of observational type (the intervention meaning the TPT recommendation was done by individual decision of each clinician). Normal total and ionic calcium is associated with low 25-hydroxyvitamin D levels and a mean lumbar T-score of -3.1�0.7SD. 50% of patients treated with TPT have digestive conditions, less than 10% are first time users, a high severity profile is based on a median of 4 years regarding prior anti-osteoporotic medication and of 3 previous fragility fractures.

A rare association of cutaneous leukocytoclastic angiitis (hypersensitivity vasculitis) and hypersensitivity pneumonia (extrinsic allergic alveolitis) in a pigeon breeder - case report and literature review

Extrinsic allergic alveolitis is an occupational condition intensively studied and published about, unlike cutaneous leukocytoclastic angiitis. The coexistence of these two diseases is even more rare in the same patient with exposure to occupational pollutants of animal origin. We present the case of a 44-year-old man, a pigeon breeder admitted to hospital with a pruritic purpuric eruption and lower limb paresthesia, dyspnea on exertion, polymyalgia rheumatica, mixed polyarthralgias. Based on the clinical, paraclinical and laboratory investigations (electroneuromyography, plethysmography, computed tomography scan, musculocutaneous biopsy, current laboratory tests and immunoassays), the main diagnoses of extrinsic allergic alveolitis and leukocytoclastic vasculitis were determined. The patient underwent treatment with corticosteroids with a favorable outcome, but which becomes aggravated by the occurrence of necrotic skin lesions at the cessation of corticosteroid therapy on the patient's own initiative. After the resumption of the corticosteroid therapy, the lesions and symptoms improve. To our knowledge, this case report is the first one that describes an association of two major conditions, extrinsic allergic alveolitis and cutaneous leukocytoclastic angiitis, in the same clinical context of an occupational exposure to specific pollutants. Long-term corticosteroid therapy has proved to be useful in preventing relapses and improving the patient's clinical status with the association of cutaneous leukocytoclastic angiitis and extrinsic allergic alveolitis. Considering our findings in this case report, we may suggest the inclusion of systemic vasculitis on the list of recognized professional diseases.

5-Hydroxytriptamine and Skeleton Influence Clinical Study

5-hydroxytryptamine (5-HT) dually influences skeleton status through positive, indirect central effect and negative, direct, gut-associated impact. Circulating form is usually tested via venous blood sample. A limited number of clinical studies are published on this specific topic. We introduce a cross-sectional study on menopausal women with normal (N=29) and low bone mineral density (N=32) based on lumbar Dual-Energy X-Ray Absorptiometry (DXA) to whom serum serotonin was assessed and found no correlation with bone loss. This aspect confirms conflicting published data regarding the relationship between circulating levels and fracture risk assessment.

Calcifediol Concentration vs Circulating Thyrotropin and Free Thyroxine in Human Blood of Postmenopausal Women

A total of 55 patients were: G1 of 9 patients, G2 of 23 subjects, and G3 of 23 patients. Similar age and years since menopause was found between the groups. There was no statistical significant difference between the groups regarding these aspects: p-value G1-G2 of 0.67, p-value G1-G3 of 0.72, p-value G2-G3 of 0.47. Similar results were obtained when TSH, FT4 and anti-thyroperoxidase antibodies were analysed between the groups. No TSH-25-OHD correlation reached the statistical significance, neither FT4-25-OHD, TPO-25-OD. P-values between G1 and G2 for TSH, FT4, TPO were 0.23, 0.38, respective 0.7, between G2 and G3 were 0.19, 0.1, 0.35, between G1 and G3 were 0.48, 0.84, respective 0.75. Bone profile analyze based on 25-OHD levels did not identify any statistical significance difference between the mentioned groups (including bone turnover markers).

Ibandronat in the Therapy of Osteoporosis in Turner Syndrome

Turner syndrome represents a condition that associates diverse pathology with somatic, metabolic (diabetes), cardio-vascular, digestive, respiratory and bone involvement along with chromosomal abnormalities. In our study we have analyzed the bone pathology that occurs in Turner syndrome and the response in the therapy with ibandronat. The decrease in value of the bone turn-over biomarkers and the decrease of the T score after the administration of ibandronate p.o. in a monthly dosage demonstrates the efficiency of this bisphosphonate in the treatment of the osteoporosis secondary to sexual hormone deficiency in Turner syndrome.

Renal Dysfunction - a Possible Marker of Severity of Heart Failure

Heart failure (HF) and renal dysfunction are frequent associated in the same patient. The purpose of our study was to assess the prevalence of renal dysfunction and the clinical status in admitted patients for decompensated HF. Material and Methods. 397 patients succesively hospitalized for decompensated HF, NYHA III or IV functional class, with left ventricular ejection fraction (LVEF) � 45% were included in the study. Renal dysfunction was defined by glomerular filtration rate (GFR) [ 60 mL/min/1.73 m 2. The mean GFR in patients with HF was 63.89 � 21.5 mL/min/1.73 m2 .The prevalence of renal dysfunction was 49.6%. Patients with GFR [ 60 mL/min/1.73m2, compared with those with preserved renal function were significantly more frequent older (75.37 � 6.84 vs. 71.33 � 8.08 years; p [0.001), females (53,8% vs. 43.5%; p = 0.04), had a significantly higher prevalence of diabetes mellitus (50.2% vs. 28.5%; p [0.001), atrial fibrillation (53.8% vs 46.2%, p = 0.04) and anemia (47.7% vs. 29.5% ; p [0.001). Also, patients with renal dysfunction had more severe HF than those without renal dysfunction (NYHA class IV: 65% vs 45%, p [0.001, clinical congestion: 78.2% vs 68%, p = 0.02, LVEF [35%: 47.21% vs � 35%, p [0.001). Renal dysfunction can be considered an additional marker of severe cardiac dysfunction along with NYHA IV class and low LVEF. The presence of both renal dysfunction and anemia could represent prognostic markers in HF patients with reduced LVEF.

The urologist and child hydronephrosis caused by ureteral anomalies

Congenital hydronephrosis caused by ureteral anomalies, like ureteral duplicity, megaureter, ureteral ectopy and ureterocele, must be differentiated from ureteropelvic junction obstruction (UJO) hydronephrosis and from the hydronephrosis caused by vesicoureteral reflux. These represent a differentiated branch of congenital abnormalities in children even if not so common, but this fact should not be disconsidered. Over a five years period, from 111 operated children in our Clinic, we performed 13 interventions for congenital hydronephrosis, 11 (84.61%) being caused by ureteral abnormalities. Here, there were described particular cases, with diagnosis steps and treatment decisions. Ureteral ectopy can be manifested by loss of urine drops in cases where ureteral holes are located in the vagina, septum or urethra, inferior to the sphincter mechanism. Incontinence in boys never occurs because the ectopic ureter never opens under the sphincter mechanism. If the ureter opens in the genital tract, patients may clinically present with the epididymitis symptom. From autopsy statistics in the US, the incidence of ureteral duplex is estimated to be less than 1%. When the duplex is associated with urinary infection, the incidence of ureteral duplex increases up to 8%.

Morphological features of tongue squamous cell carcinoma diagnosed in Dolj County population between 2012-2014

Tongue squamous carcinoma can be found in many forms, having a lot of risk factors, and whose morphological characteristics can be used as a prognostic. The purpose of this study was to histologically characterize a number of 54 patients diagnosed between 2012-2014, with tongue squamous carcinoma. Surgical resection specimens of tongue tumors were processed by paraffin inclusion technique. The diagnose samples were reevaluated according to the World Health Organization (WHO) criteria for head and neck tumors diagnosis, by screening the Hematoxylin-Eosin staining sections. The most common histopathological variety of tongue carcinoma observed in our cases was the non-keratinized form, the basaloid and sarcomatoid types of carcinoma being ranked on the last places. The study outlined the prevalence of non-keratinized forms of tongue squamous carcinoma and all types of tumoral invasion patterns have been observed in different percentages.

Muscle metastases from cervical carcinoma - case report

Muscular metastases are rarely found in medical practice, and the reported cases in literature are not numerous. The diagnosis of these lesions involves an interdisciplinary collaboration. We present a case of secondary determination in the psoas muscle, with a starting point of cervical squamous carcinoma. In establishing the diagnosis, there contributed the clinical, imagistic and magnetic resonance evaluation and computed tomography (CT), the histopathological diagnosis being determined after the CT-guided biopsy puncture.

Difficulty in positive diagnosis of ascites and in differential diagnosis of a pulmonary tumor

Ascites is the most frequent complication of cirrhosis and occurs only when the portal hypertension has already installed but ascites is caused by neoplasms, heart failure, tuberculosis, pancreatic illnesses, as well as other kind of affections. We describe the case of a 67-year-old patient, a retired person, without significant personal or familial history, nonsmoker, infrequent alcohol and coffee consumer with following chief complaints at onset: loss of appetite, weight loss, serious physical asthenia, delayed intestinal transit, diffuse abdominal pain and increase of abdominal circumference. Initially was misdiagnosed with liver cirrhosis. After discharged from our Clinic, suspicion of diagnosis was mesothelioma as well as after first thoracoscopy and pleural biopsy performed in a Clinic of Thoracic Surgery. Several pleural fragments collected by biopsy were sampled for the histopathological exam. The stainings used were Hematoxylin-Eosin (HE) and Periodic Acid-Schiff (PAS) for the mucopolysaccharides. For the immunohistochemistry was used the labeled Streptavidin-Biotin (LSAB)-Horseradish peroxidase (HRP) method, as well as the antibodies: cytokeratin (CK) cocktail (AE1÷AE3), vimentin, calretinin, CK7, CK5÷6, CK20, epithelial specific antigen/epithelial cell adhesion molecule (Ep-CAM) (BerEP4), thyroid transcription factor-1 (TTF-1), E-cadherin, CDX2, carcinoembryonic antigen (CEA) and the Hector Battifora mesothelial antigen-1 (HBME-1). The aspect at immunohistochemistry establishes a positive diagnostic of poorly differentiated mucinous pulmonary adenocarcinoma, with "signet ring" cells. The rapid and accurate determination of the diagnostics will allow not only for a decrease in the expenses for inefficient treatments, but also for the guidance of the patients towards clinics or centers able to provide and supervise these treatments.

Evaluation of Helicobacter pylori infection in patients with eso-gastro-duodenal pathology

Helicobacter pylori (HP) infection is one of the most frequent bacterial infections in humans. The studies performed in the last 30 years showed that this bacterium is the main cause of chronic gastritis and the main etiological agent of peptic ulcer and gastric cancer. We investigated the prevalence of HP infection in a group of 1525 patients who addressed a gastroenterology medical center between 2010-2014, in Craiova, Romania, for dyspeptic symptoms. The patients underwent a clinical, endoscopic and serologic investigation for highlighting a possible HP infection. The age of the patients with gastric duodenal pathology varied between 16 and 87 years old. Of the 1525 patients, a number of 971 (63.67%) were diagnosed with HP infection, while the rest of 554 (36.33%) were not infected. The study on the distribution of gastric duodenal pathology and HP infection showed that the lesions of the upper digestive tract and HP infection emerged quite early, a number of 29 patients being aged less than 20 years old; among these, 21 (72.41%) patients were HP positive and only eight (27.59%) were HP negative. In the age group of 20-29 years old there were recorded 184 patients, of which 120 (65.22%) were HP positive and only 64 (34.78%) were HP negative. There may be observed that in the age group of 20-29 years old, both the patients with gastric duodenal pathology and the ones with HP infection increased six times in comparison to the first decade. Most cases were recorded in the patients aged between 50 and 69 years old. The two decades comprised a total number of 607 (39.8%) patients, of which 375 (61.78%) were HP positive and 232 (38.22%) were HP negative. By evaluating the distribution of HP infection according to the social environment, there was observed that there were no significant differences between the patients coming from the urban area and the ones from the rural area, as far as the HP infection was concerned.

Acute lithiasic cholecystitis, pseudoneoplastic form, a cause of conversion for laparoscopic cholecystectomy

Acute lithiasic cholecystitis represents one of the most frequent pathologies of the digestive tract, most often requiring emergency surgical treatment. The prevalence of this condition increases with age and it affects women the most. Laparoscopic cholecystectomy is the preferred surgical treatment, as it diminishes postoperatory pain, it reduces the hospitalization period and medical and social costs, and it also provides a rapid postoperatory recovery. We present the case of an elder female patient, who presented with complex symptoms and signs, suggesting both lithiasic cholecystitis and a gallbladder neoplastic condition. Although there was preferred a laparoscopic cholecystectomy, the presence of an inflammatory process with intense sclerous reaction in the hepatocystic triangle led the conversion of laparoscopic cholecystectomy into an open, classical one. Due to the inflammatory process, the common bile duct (CBD) could not be explored. The subsequent practicing of a cholangiography on the drain tube highlighted the presence of an obstacle in the end zone of the CBD, which could not be removed until the second surgical intervention. The histopahological exams - from frozen sections to immunohistochemistry - had a crucial role in deciding patient's surgical management. The good evolution of the case and the final postoperatory result confirmed that the therapeutic manner chosen for this case was the appropriate one.

Imaging and histopathological aspects in aseptic osteonecrosis of the femoral head

Aseptic osteonecrosis causes various clinical manifestations, depending on its location, but has in common a histopathological and radiological substrate. Aseptic osteonecrosis of the femoral head is a condition whose pathogenesis remains unclear despite many theories developed so far, and the discovery of numerous risk factors. The objective of this study is to emphasize the role of imaging techniques and correlating histology and immunohistochemistry methods in order to more accurately stage the disease. This retrospective study was performed on a total of 103 patients with clinical and radiological suspicion of unilateral or bilateral osteonecrosis. For the diagnosis criteria, we used clinical information, pelvic X-ray images, magnetic resonance imaging (MRI) or computed tomography (CT). For the inclusion of patients in a disease stage, we used the Association Research Circulation Osseous (ARCO) classification system. For patients diagnosed at an advanced stage, who underwent hip arthroplasty, we harvested biological material necessary for the histopathological study. There were differences in the appearance and extent of the lesion on the histological samples compared to macroscopic examination and even those obtained through imaging means, particularly for patients in evolutionary stage III. Aspects such as the extension of the area of fibrosis, bone tissue remodeling, the density of the newly formed vascular network and degree of impairment of the cartilage, are determined more accurately using histology and immunohistochemistry techniques. Before classifying patients in a certain stage, after correlating clinical and imaging data, histopathological aspects have to be considered, particularly in patients in stages III and IV, in which total hip arthroplasty could be delayed.

Histopathological and immunohistochemical aspects in chronic suppurative maxillary rhinosinusitis

Chronic rhinosinusitis is a multifactorial disease with pathophysiological mechanisms, which remain unclear, and with a high prevalence worldwide. They generate social problems due to the high number of days of leave and relatively elevated medical expenses. The histopathological and immunohistochemical study that we conducted revealed many lesional aspects of the epithelium of the sinus mucosa, which ranged from hypertrophy, hyperplasia and metaplasia, to erosion and discontinuities. In the chorion of the sinus mucosa there was an inflammatory infiltrate composed mainly of lymphocytes, plasma cells and macrophages, and also a highly developed vascular network. Among immune cells, T-cells appeared to be more numerous than B-lymphocytes and macrophages. We believe that microscopic changes are due mainly to microscopic organisms that make up the biofilm of the sinus cavity, whose virulence has been more or less influenced by exogenous or endogenous factors.

A multidisciplinary approach in patients with femoral neck fracture on an osteoporotic basis

INTRODUCTION

Osteoporosis is a common affection characterized by a reduction of bone mass that affects mostly women after menopause. It currently leads to fractures, especially of the spine and hip thus enhancing the costs of medical care. There are many factors that contribute to its development, leading to various strategy lines to deal with it.

AIM

The present study aims at showing how a multidisciplinary, multifactorial approach can be effective in treating and preventing new osteoporotic fractures.

MATERIAL AND METHODS

The study included 17 patients that had replacement arthroplasty for femoral neck fractures. Bone tissue fragments were obtained from all of them and analyzed by pathology specialists. A dual-energy X-ray absorptiometry exam was also performed on each patient. In the end, the data was collected and processed by rehabilitation experts in order to establish proper therapy.

RESULTS

The hip fracture incidence was two times more frequent in women than in men, higher in the 71-80-year-old group. By analyzing the bone fragments atrophy could be seen, especially in the femoral neck as well as lamellae and osteon reduction and bone architecture alterations.

CONCLUSIONS

Surgical or pharmacological treatments alone are not sufficient for handling osteoporosis. Strategies such as preventing falls, a proper diet, treating associated conditions and a well-established exercise program need to be considered. Specialists from several areas such as pathology, orthopedics, endocrinology, internal medicine and rehabilitation should work together to design the best approach to deal with osteoporosis.

Numerical simulations of the 3D virtual model of the human hip joint, using finite element method

In this paper, we present a three-dimensional mathematical model for a normal hip joint. The three-dimensional finite element model has been constructed based on Computer Tomograph scans of the bones. The obtained 3D model is studied using the finite element method, taking into consideration the real structure of the bone and the mechanical characteristics of cortical and spongy. The FE model of hip joint, the material properties used to simulate the behavior of the cortical and trabecular bone (of femur and coxal bone) and the cartilage, as well as the boundary conditions are presented. The distribution map of the axial and global movements on the global model and the distribution map of the axial and von Misses strain in the cartilaginous surface of the femur are presented.

Hypothesis of microfractures by buckling theory of bone's trabeculas from vertebral bodies affected by osteoporosis

Osteoporosis has become in recent years a public health problem considered a true "silent epidemic", by increasing the number of osteoporosis fractures in the world as a result of increased number of persons 3rd group of age by increasing life expectancy and reducing physical effort and the emergence of sedentary occupations, increasing incidence of obesity, diabetes, liver disease and kidney by applying widely corticosteroid therapy. Starting from the macroscopic and microscopic aspects of the bone spongy tissue affected by osteoporosis, from vertebral bodies, we try to explain the modality of damaging the bone micro-structure by buckling phenomenon, knowing that the bone tissue has at trabecular level, an elasticity degree and supports high levels of mechanical forces.

Histological study [correction of styudy] of the femural head and neck microscopic architecture in persons with senile osteoporosis

For our study were available fragments of bony tissue from 24 patients (15 females and 9 males) aged between 55-82 which needed hip arthroplasty after they had undergone femural neck fractures. Biologic pieces have been fixed, then decalcified and processed by wax embedding. We noted that the spongious osseous tissue appeared as rarefied after the remoulding processes; osseous traveas grew unplainly thinner, with their large areolar cavities filled of bony yellow marrow. The osseous cortex presented deformed osteomas with large irregular Havers ducts. The osteocytes appeared rarefied, of small size with a picnotic and hyperchrome nucleus.