LAM KID

[Everyday decisions regarding osteoporosis treatment]

TAKÁCS István

DECEMBER 10, 2012

LAM KID - 2012;2(04)

[Efficient, new medicines as well as recent scientific results have substantially changed the options and daily practice of osteoporosis treatment. Besides the indicated duration of therapies, their indication has also changed in several key points, and the range of possibilities for switching therapies have expanded. Despite the availability of a steadily increasing number of data, large-scale studies do not always help making therapeutic decisions, so we have to rely on professional protocols and our own experience, as well as on logical thinking. Moreover, we also have to observe financial regulations. This summary is intended to serve as a guideline for the most important decision situations from the initiation of therapy until its cessation.]

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Further articles in this publication

LAM KID

[Stop at one - Make your first break your last!]

NÉMETH Éva

LAM KID

[Adherence of Hungarian postmenopausal women with osteoporosis]

LAKATOS Péter, TÓTH Emese, LANG Zsolt, NAGY Bence, SZEKERES László, TAKÁCS István

[INTRODUCTION - Osteoporosis is defined as a loss of bone tissue and bone mass that leads to a compromised trength and quality of bones and thus to an increased risk of fractures. In many women, menopausal hormonal changes are associated with an increased bone loss. This population has postmenopausal osteoporosis. The essence of osteporosis treatment is the adequate calcium and vitamin D supplementation, which, if needed, might be combined with drug therapy to inhibit the process of bone loss. METHODS - We assessed the adherence to therapy of Hungarian patients and its effect on the risk of bone fractures, using data recorded by the National Health Insurance Fund Administration between 2004 and 2010 (n=223068, mean age: 69.9 years). We performed a statistical analyses of the available data. Medication possession ratio (MPR) for each treatment and the ratio of patients receiving continuous treatment in the study period (for 12, 18 and 24 months) were estimated. Medication persistence was investigated using Kaplan-Meier survival analysis. A multivariate Cox proportional hazard model was used to determine the factors influencing the risk of fracture. RESULTS, CONCLUSION - The results of our study show that medication adherence to treatment is low among Hungarian patients [mean MPR: 57.9%; 95% CI (57.7%- 58.0%) and persistence rate: 32.4%; 95% CI (32.2%-32.6%) in the first year]. These parameters are substantially influenced by the administration route and the frequency of treatments [mean MPR ranged 41.5%- 100% and persistence rates ranged 18.8%- 100% in the first year, differences between subgroups were significant (p<0,05)]. Our compliance as well as persistance studies showed that parenteral administration had more beneficial effects. Confirming our preliminary hypotheses, the improvement of patient compliance significantly reduced fracture risk (good compliance was defined as MPR>80%, which was associated with RR: 0.57, p<0.05 for fracture risk). Further improvement might be achieved by parenteral administration [RR for fracture risk 0.60 compared with non-compliant patients and 0.44 compared with compliant subgroups treated with oral and parenteral medications (p<0.05)].]

LAM KID

[The effects of targeted therapies on bones]

SZEKANECZ Zoltán

[Arthritis is associated with local as well as generalised bone loss. It is likely that similar inflammatory/immunological factors contribute to both types of bone loss. Today, the main targets of arthritis therapy are proinflammatory citokines (TNF-alpha, IL-1, IL-6, in the future IL-17) and the inhibition of B and T cells. All biological therapies have been proved to slow down the development of focal joint destruction. TNF-inhibitors in particular have been demonstrated to have a beneficial effect on generalised osteoporosis. In ankylosing spondylitis, generalised osteoporosis and locally increased bone formation occur at the same time, creating a controversial situation. Further studies are needed for a better understanding of the effects of targeted therapy on bones.]

LAM KID

[Hip cortical thickness assessment in postmenopausal women with osteoporosis and strontium ranelate effect on hip geometry]

BALLA Bernadett

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[Diffusely increasing neck fat mass]

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[Denosumab is a fully human monoclonal antibody to RANKL modifying bone resorption in a rapid, sustained and reversible way. In postmenopausal women with low bone mineral density, denosumab 60 mg every 6 months increased mineral density, and reduced bone turnover. In postmenopausal women, it reduced the risk of vertebral, hip, and non-vertebral fractures. Increase in body mass index and reduction in bone turnover was more pronounced with denosumab than with alendronate. In patients who were switched from alendronate to denosumab, positive effects on bone were more pronounced than in those continuing alendronate. Denosumab was safe and well tolerated, and it holds the promise of becoming an efficacious therapy for postmenopausal osteoporosis.]

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[PRIMARY TUMOURS OF UNKNOWN ORIGIN WITH CERVICAL LYMPH NODE METASTASES - A RETROSPECTIVE STUDY]

GARAI Tibor, NÉMETH Zsuzsanna, TOMPOS Tamás, ZEMPLÉN Béla

[ITRODUCTION - Primary tumours are defined unknown if, despite of the presence of histologically verified metastases, the site of origin cannot be revealed even with complex investigations. On average, 5% of patients with cervical lymph node metastases belong to this group. The incidence of cervical lymph node tumours increases with age, with more than 60% arising from malignancies in patients over 40. PATIENT AND METHODS - In this retrospective study, the authors review the history of 29 patients treated or examined in their department between January 2002 and November 2006 with the starting diagnosis of cervical lymph node metastasis from a primary tumour of unknown origin. All patients had a thorough physical examination, indirect upper respiratory tract endoscopy, and aspiration cytology. In the search for the primary tumour the use of both traditional X-ray studies and modern imaging techniques are justified. RESULTS - Of the 29 patients, five did not present after surgery, and one patient died. The location of the primary tumour could be determined in 12 of the remaining 23 patients during the follow-up period. These included the palatine tonsil in four cases, the lung in three patients, the lower pharynx in two patients, and one case each of the lingual radix, the larynx and the nasal pharynx. The histology of the metastases was mostly squamous cell carcinoma and they were located in the upper parajugular region. The investigation of the remaining patients is continued. CONCLUSION - In cases of cervical lymph node metastases that histologically turn out to be squamous cell carcinoma, the primary tumour should first be searched for in the head-and-neck region, followed by the lungs. On the other hand, high-grade nasopharyngeal carcinomas warrant the search in the Waldeyer ring. The authors emphasize the importance to keep the proper order of the diagnostic and therapeutic steps and to manage these patients in experienced institutions.]

LAM KID

[Is a paradigm shift possible in the clinical practice of preventing recurrent fractures?]

TAKÁCS István

[Recurrent osteoporotic bone fractures are less and less considered “natural”, due to the immense variety of products available for treatment. In order to prevent recurrent fractures, treatment should be started in time, and a careful approach is needed to choose the appropriate treatment, and, if needed, to switch therapy. When choosing the therapeutic approach, we have to decide whether it corresponds to the severity of the osteoporosis and the risk of fracture. In order to do this, we have to consider bone quality, previous fractures, the condition of cortical bones and the mode of action of the selected treatment, in addition to the easily evaluated density value. The aim of this article is to provide practical help for the above mentioned decisionmaking process.]

Ca&Bone

[Vitamin D receptor gene BsmI polymorphism in rheumatoid arthritis and associated osteoporosis]

PÁKOZDI Angéla és munkatársai

[Rheumatoid arthritis is frequently associated with secondary osteopenia or osteoporosis. Gene polymorphisms, such as the BsmI polymorphism of the vitamin D receptor gene are likely to be be involved in the pathogenesis of osteoporosis. However, very little information is available on the role of the BsmI polymorphism in rheumatoid arthritis or in arthritisassociated metabolic bone disorders. Here the authors review international data on vitamin D receptor gene polymorphisms and their relationship with bone metabolism.The authors emphasize that more detailed research is needed to clarify the relationship between these polymorphisms and rheumatoid arthritis.]

Clinical Neuroscience

[Treatment of osteoporotic vertebral compression fracture with PMMA augmented pedicle screw fixation]

PADÁNYI Csaba, MISIK Ferenc, PAPP Zoltán, VITANOVICS Dusan, BALOGH Attila, VERES Róbert, LIPÓTH László, BANCZEROWSKI Péter

[Background - Over the last few decades many innovative operation technique were developed due to the increase of porotic vertebral fractures. These new techniques aim to reach the required stability of the vertebral column. In case of significant instability, spinal canal stenosis or neural compression, decompressive intervention may be necessary, which results in further weakening of the column of the spine, the minimal invasive percutan vertebroplasty is not an adequate method to reach the required stability, that is why insertion of complementary pedicular screws is needed. Considering the limited screw-fixing ability of the porotic bone structure, with this new technique we are able to reach the appropriate stability of cement-augmented pedicle screws by dosing cement carefully through the screws into the vertebral body. We used this technique in our Institute in case of 12 patients and followed up the required stability and the severity of complications. Methods - Fifteen vertebral compression fractures of 12 patients were treated in our Institute. Using the classification proposed by Genant et al. we found that the severity of the vertebral compression was grade 3 in case of 13, while grade 2 in case of two fractures. The average follow up time of the patients was 22 months (12-39), during this period X-ray, CT and clinical control examinations were taken. During the surgery the involved segments were localised by using X-ray and after the exploration the canulated screws were put through the pedicles of the spine and the vertebral body was filled through the transpedicular screws with bone cement. Depending on the grade of the spinal canal stenosis, we made the decompression, vertebroplasty or corpectomy of the fractured vertebral body, and the replacement of the body. Finally the concerned segments were fixed by titanium rods. Results - In all cases the stenosis of spinal canal was resolved and the bone cement injected into the corpus resulted in adequated stability of the spine. In case of six patients we observed cement extravasation without any clinical signs, and by one patient - as a serious complication - pulmonary embolism. Neurological progression or screw loosening were not detected during the follow up period. Part of the patients had residual disability after the surgery due to their older ages and the problem of their rehabilitation process. Conclusion - After the right consideration of indications, age, general health condition and the chance of successful rehabilitation, the technique appears to be safe for the patients. With the use of this surgical method, the stability of the spine can be improved compared to the preoperative condition, the spinal canal stenosis can be solved and the neural structures can be decompressed. The severity of complications can be reduced by a precise surgical technique and the careful use of the injected cement. The indication of the surgical method needs to be considered in the light of the expected outcome and the rehabilitation.]