Abstract：
:The natural tibiofemoral joint (TFJ) functions according to the asymmetrical joint surfaces and the rolling-gliding mechanism. In the sagittal section, the human TFG is the tibial plateau on the medial concave side and curved on the lateral convex. With the asymmetrical joint surfaces, the flexion of the knee consists of two parts: the femur rolls backwards over the tibia plateau, and further flexion causes increased gliding. In most knee arthroplasties, these factors are not taken into account; instead, they are equipped with symmetrical medial and lateral joint surfaces. Thereby, the curvatures of the sagittal contours and the medial lateral joint surfaces create a common axis of rotation. The goal of this study was therefore to develop a novel knee endoprosthesis with asymmetrical joint surfaces and natural rolling-sliding behaviour.
journal_name
Med Hypothesesjournal_title
Medical hypothesesauthors
Wei H,Lu W,Niu S,Tian F,Tian H,Ni Ydoi
10.1016/j.mehy.2014.04.015subject
Has Abstractpub_date
2014-09-01 00:00:00pages
247-9issue
3eissn
0306-9877issn
1532-2777pii
S0306-9877(14)00164-9journal_volume
83pub_type
杂志文章abstract：:Our hypothesis was that testosterone therapy (TT) interacts with previously undiagnosed thrombophilia-hypofibrinolysis, leading to hospitalization for deep venous thrombosis (DVT)-pulmonary emboli (PE). We determined the prevalence of DVT-PE associated with TT 147 men hospitalized in the last 12 months for DVT-PE. Of ...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2015.01.020
更新日期：2015-04-01 00:00:00
abstract：:Music is ubiquitous. Yet, its biological relevance is still an ongoing debate. Supporting the view that music had an ancestral role in courtship displays, a pilot study presented here provides preliminary evidence on the link between music and sexual selection. The underlying hypothesis is based on the fact that the s...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2016.05.030
更新日期：2016-08-01 00:00:00
abstract：:Insulin resistance has been associated with people diagnosed with depression. Conversely, it has also been documented that diabetics have an increased risk of depression. Evidence suggests that insulin activity plays a role in serotonergic activity by increasing the influx of tryptophan into the brain. This increased ...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1054/mehy.2000.1103
更新日期：2000-12-01 00:00:00
abstract：:Local-regional relapse is the main recurrence pattern of the carcinoma in gut, and leads to poor prognosis. With the development of the total mesorectal and complete mesocolic excision (TME/CME), the local relapse rate of colorectal cancer has significantly decreased. People attributed it to the improvement of lymphad...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2017.04.013
更新日期：2017-06-01 00:00:00
abstract：:An association between Alzheimer's Disease (AD) and low CSF and serum vitamin B12 (B12) has recently been described (1, 2, 3). This is apparently independent of nutritional intake (4). It has been suggested that such patients may exhibit an atypical form of cobalamin deficiency (3, 4). It is therefore proposed that th...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/0306-9877(92)90074-m
更新日期：1992-03-01 00:00:00
abstract：:Colic is generally defined as excessive crying in early infancy and can have negative consequences on the infant as well as on the infant's family life. Excessive crying can result in escalating parental stress levels, abusive caregiver response, increased risk of shaken baby syndrome and parental postpartum depressio...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2014.05.018
更新日期：2014-09-01 00:00:00
abstract：:It is well documented that depressed patients, as a result of their illness, often experience some difficulties with their memory. This hypothesis suggests a vice-versa; that it is a gradual impairment and ultimate failure of specific memory systems that may underpin the onset and continuation of a depressive illness....
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2007.01.046
更新日期：2007-01-01 00:00:00
abstract：:Ample intakes of fruit and vegetables have been linked epidemiologically with reduced risk for coronary disease, stroke, hypertension, obesity, many types of cancer, chronic pulmonary disease, osteoporosis, and various ocular disorders. The favorable impact of diets rich in fruit and vegetables on coronary risk has be...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2005.09.058
更新日期：2008-01-01 00:00:00
abstract：:Mood expressions encompassing positive scales like "activity, elation, contemplation, calmness" and negative scales like "anger, excitement, depression, fatigue" were applied for introducing a new tool to assess the effects of acupuncture on brain structures. Traditional acupuncture points defined in the literature fo...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2015.05.013
更新日期：2015-09-01 00:00:00
abstract：:Cameron and Pauling have reported large survival increases in terminal cancer patients treated with Vitamin C. Their trials, which have been criticised because not based on random, double-blind principles, are reviewed here using a broad inductive method that relies on diverse data of varying quality. Conclusions are ...
journal_title：Medical hypotheses
pub_type： 临床试验,杂志文章
doi：10.1016/0306-9877(82)90089-5
更新日期：1982-01-01 00:00:00
abstract：:The interstitial space (ISS) can be thought of as an organ of translocation. Defined in this way the concentration of any substance in the ISS is equal to the ratio of an input to a clearance function. When substances accumulate, there is a disturbance of one or both functions. The three phase anatomy of the ISS give ...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/0306-9877(80)90040-7
更新日期：1980-09-01 00:00:00
abstract：:A steady fall in mortality rates from cardiovascular diseases (CVD) has been reported recently in the United States. This study tests the hypothesis that fruits and vegetables had a protective effect against cardiovascular mortality among the American population from 1964-78. Special attention was focused on more spec...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/0306-9877(85)90035-0
更新日期：1985-01-01 00:00:00
abstract：:Auer rods are cytoplasmic inclusions found only in the leukaemic cells of some cases of acute myeloid leukaemia (AML). The ultrastructure of Auer rods is different in different sub-types of the disease and it is suggested here that this may be a consequence of the Auer rods consisting of different crystalline forms of...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/0306-9877(89)90058-3
更新日期：1989-11-01 00:00:00
abstract：:Muscle spindles are increasingly recognized as playing a pivotal role in the cause of dystonia. This development and own laryngeal observations that support the idea of causally "well-intentioned" stuttering motivated us to present the following hypothesis: stuttering events compensate for a sensory problem that arise...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2012.03.025
更新日期：2012-07-01 00:00:00
abstract：:Cancer stem cells are presently viewed as carriers of the growth initiating potential, repopulation capability and drug resistance in tumors. However, many of these fundamental properties of cancer are host-related, modified by cell-cell interactions and/or dependent on angiogenesis. Indeed, it is well established tha...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2005.09.004
更新日期：2006-01-01 00:00:00
abstract：:While cigarette smoking is recognized as an important risk factor in human oral cancers, the effect of water pipe smoking (WPS) on these cancers is not known. WPS is very common in the young adult population, especially in the Middle East, and has been associated with several respiratory problems. However, to date, th...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2009.10.013
更新日期：2010-03-01 00:00:00
abstract：:Women with polycystic ovary syndrome (PCOS) have been shown to have a higher incidence of cancer. It is suggested that several factors, including hyperinsulinemia, dyslipidemia, raised estrogen levels, chronic inflammation, and reduced apoptosis are responsible for this association. However, in this paper we propose t...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2019.109437
更新日期：2020-01-01 00:00:00
abstract：:The hypothesis is proposed that: 1. Aflatoxin B1 and polycyclic hydrocarbon carcinogens cause the deletion of genes necessary for the production of a substance required for differentiation of the cell and activated by a steroid hormone possibly a corticosteroid. 2. Such genes could include genes for production of: glu...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/0306-9877(79)90046-x
更新日期：1979-09-01 00:00:00
abstract：:Photodynamic therapy (PDT) is a new therapeutic approach for the treatment of malignant tumors. Hyperbaric oxygen (HBO(2)) shows beneficial effects in various modalities of cancer interventions. Tumor cells tend to accumulate large amount of iron. There is interaction between tissue content of oxygen, iron, free radic...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2005.12.052
更新日期：2006-01-01 00:00:00
abstract：:Reversing chronic conditions remains an elusive goal of medicine. The modern medical paradigm based on blocking overactive pathways or augmenting deficient pathways offers symptomatic benefit, but tolerance to therapy can develop and treatment cessation can produce rebound symptoms due to compensatory mechanisms. We p...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2004.09.007
更新日期：2005-01-01 00:00:00
abstract：BACKGROUND:Eelier studies demonstrated the up-regulation of some transcriptional factors such as Oct4, Nanog, Sox2 in undifferentiated cancer cells. These transcriptional regulators are up-regulated in pluripotent cells, as well and are responsible for cell reprogramming in normal cells. It might be said that normal ce...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2014.09.014
更新日期：2014-12-01 00:00:00
abstract：:So-called 'limited life span' of diploid cells does not depend on their unresponsiveness to growth factors from the data obtained by complete protein-free culture of tumor cells. Limited proliferation (called limited life span) of diploid cells is one of the 'ad-hoc' negative regulatory mechanisms in animals, and can ...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/0306-9877(93)90090-d
更新日期：1993-10-01 00:00:00
abstract：:Dyslipidemia is a common pathology throughout the industrialized world, and HMG-CoA reductase inhibitors (statins) are often administered to treat elevated lipid levels. Substantial concern has been raised regarding the aggressive clinical lowering of cholesterol, particularly in light of a growing body of research li...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2016.10.018
更新日期：2016-12-01 00:00:00
abstract：:Increased longevity is compromised for the quality of life due to prevalence of metabolic derangements and systemic degenerative disorders, as a result of lifestyle changes in modern days. In a craze to improve upon quality of life, use of pharmacological formulations aimed towards symptomatic treatment regimen is man...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2006.09.069
更新日期：2007-01-01 00:00:00
abstract：:Vasogenic brain edema occurs as a result of a diverse spectrum of central nervous system pathology. The fundamental physiologic abnormality of vasogenic brain edema is an increase in cerebral capillary permeability. It is hypothesized that the recent development of new, potent, synthetic vasopressin antagonists will m...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/0306-9877(88)90112-0
更新日期：1988-05-01 00:00:00
abstract：:The paper discusses a mechanism for reciprocal translocation of midsegments between two chromatids so that one of the segments is restacked in inverted configuration. Regarding malignant cells, such process could derive from anachronistic assembly of the nuclear envelope. ...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/s0306-9877(98)90277-8
更新日期：1998-06-01 00:00:00
abstract：:Considerations are given to special features of the nuclear envelope that might occasion segmental exchange between sister chromatids. The underlying dynamics may lead to illegal apposition of originally distant sequences and/or to modulations in the topologic orientation of genes on chromatid segments involved in suc...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/0306-9877(91)90003-h
更新日期：1991-12-01 00:00:00
abstract：:A case-control study was conducted in order to test the hypothesis that a reduced exposure to human seminal factors in the early reproductive life of women is a risk factor in breast cancer. The relative risk of exposure to the hypothetical semen-factor deficiency is 4.7 times greater for breast-cancer patients than f...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/0306-9877(78)90051-8
更新日期：1978-03-01 00:00:00
abstract：:Preliminary reports have demonstrated that anterior nucleus thalamus high-frequency electrical stimulation (ANT-HFS) is an effective treatment for patients who suffer from medically refractory epilepsy. However, its extensive application has been hampered by the high cost and the unpredictable outcome before the opera...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2013.06.001
更新日期：2013-09-01 00:00:00
abstract：:Myeloid-derived suppressor cells (MDSCs) accumulate in tumor-bearing hosts and play an essential role in tumor-associated immunosuppression, which hampers effective immunotherapeutic approaches. MicroRNAs (miRNAs) are short noncoding RNAs that negatively regulate target gene expression at the posttranscriptional level...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2014.05.006
更新日期：2014-08-01 00:00:00
