Twenty percent of the patients in the unipolar ha group displayed acetabular erosion at the 12month followup compared to 5% in the. Unipolar versus bipolar hemiarthroplasty malaysian orthopaedic. A bipolar prosthesis has an additional artificial joint between the two components of the prosthesis. Bipolar or unipolar hemiarthroplasty after femoral neck. Unipolar depression is a mental disorder that results in a patient having episodes of lowmood, low selfesteem, loss of interest, loss of pleasure in enjoyable activities. Unipolar versus bipolar hip hemiarthroplasty in the treatment of. The choice of prosthesis in hemiarthroplasty is controversial for geriatric patients after femoral neck fracture. Using a pencil instrument, the active electrode is placed in the entry site and can be used to cut tissue. Unipolar hemiarthroplasty versus bipolar hemiarthroplasty in the. The decision to perform hemiarthroplasty using a unipolar or bipolar prosthesis remains controversial, with proponents on either side. For example, unipolar depression is a set of symptoms someone. The aim of this study was to compare the short outcome of surgical treatment of femoral neck fractures in elderly using unipolar and bipolar hip hemiarthroplasty. Unipolar and bipolar switching scheme are applied to control the magnitude and frequency of output voltage and result of both unipolar and bipolar are compared.
However, it has recently been reported that bipolar ha bha also provides good outcomes, and it is not clear as to whether bha or tha is most appropriate. Is there a significant difference in surgery and outcomes. Pdf comparison between unipolar and bipolar single phase. A total hip replacement total hip arthroplasty or tha. Unipolar or bipolar hemiarthroplasty in the treatment of. Hemiarthroplasty unipolar and bipolar indications approach and procedure moderator. Bipolar disorder is a condition in which people experience extensive mood swings. Among these procedures, hemiarthroplasty has become the most preferred treatment option for surgeons according to the surveys. Untreated basotrochanteric fracture of one month duration. Hip replacement is a surgical procedure in which the hip joint is replaced by a prosthetic implant, that is, a hip prosthesis. Hemiarthroplasty half joint replacement hemiarthroplasty involves replacing the femoral head with a prosthesis, while.
Whether bipolar hemiarthroplasty bh for displaced femoral neck fractures has benefit over unipolar hemiarthroplasty uh remains controversial. Pdf hemiarthroplasty ha is generally considered to be the treatment of choice in the most elderly patients with a displaced fracture of the femoral. Such joint replacement orthopaedic surgery is generally conducted to relieve arthritis pain or in some hip fractures. Unipolar hemiarthroplasty versus bipolar hemiarthroplasty. Due to the unsatisfactorily high level of uncertainty, this study was undertaken to analyze the relationship between perioperative parameters, functional outcome and complications of bipolar hemiarthroplasty in elderly patients with displaced intracapsular femoral neck fractures and to. It is rarely used except for a temporary way to handle a bad lead wire. Ninh, md, anil sethi, md,y mohammed hatahet, md, clifford les, phd, massimo morandi, md, and rahul vaidya, md, frcscy abstract. Hemiarthroplasty means replacing the hip joint with a metal prosthesis. Bipolar disorder ii refers to a less severe form of bipolar depression with fluctuations between depression and hypomania. Unipolar or bipolar hemiarthroplasty for femoral neck. If you think you are experiencing the symptoms of unipolar or bipolar depression, you can take our confidential self evaluator and make an appointment to see a counselor or doctor. Adding to the diagnostic challenge, patients with bipolar disorder tend to spend a far larger proportion of their time in a depressive phase than in the manic. Proposed advantages of the bipolar prosthesis include.
I wonder why it was set to unipolar in the first place. Unipolar, bipolar or total hip endoprosthesis after. Hemiarthroplasty for displaced femoral neck fractures in. Hip replacement surgery can be performed as a total replacement or a hemi half replacement. Bipolar disorder i is the traditionally diagnosed condition with both observable mania and the typical lows of major depression. A person may start of being happy and then go quickly to becoming sad or depressed. Hemiarthroplasty is a common procedure in the treatment of femoral neck fractures in the elderly.
In a previous oneyear followup of an rct from our department including 120. Hip dislocation after modular unipolar hemiarthroplasty christopher c. A bipolar signal is one that ranges from some negative value to some positive value is both positive and negative going. The hhs scores were equal at both followups, but there was a trend towards better hrqol in the bipolar ha group at four months, eq5d index score 0. Comparison of bipolar hemiarthroplasty and total hip. Unipolar versus bipolar hemiarthroplasty for displaced femoral. Inside the main prosthetic femoral head there will be a second smaller ball that will have articulate as well. Click here to learn about hip hemiarthroplasty bipolar, which is performed by the specialtytrained doctors at orthopedic associates in port huron, michigan. Both unipolar and bipolar depression are sets of symptoms which indicate certain mental health diagnoses. Hip hemiarthroplasty bipolar orthopedic associates of.
The purpose of this study was to compare the causes of failure and longevity in both types of ha. Unipolar versus bipolar hemiarthroplasty for displaced femoral neck fractures in the elderly. However, it is debatable whether unipolar or bipolar ha is the most suitable implant. A metaanalysis chen jiangtao1, zhou yijun2, xun chuanhui1, huo jianjun3, song xinghua1, tian zheng1, akbar yunus1, cao li1 1orthopaedic department, the first affiliated hospital of xinjiang medical university, urumqi 2orthopaedic department, the first peoples. In the next decade, no other major country except china can possibly narrow the gap between itself and the. How to differentiate bipolar disorder from unipolar.
In 2010, hedbeck et al randomized 120 patients to either unipolar or bipolar hemiarthroplasty and examined acetabular erosion rates at 1 year. The purpose of this study was to report the conversion rate of ha to total hip arthroplasty tha for displaced femoral neck fractures and compare outcomes between implant constructs bipolar vs unipolar, fixation options cemented vs cementless stems, and age groups unipolarbipolar measurement range. This surgical procedure replaces the head of a damaged femur with an implant designed to stabilize the femur and restore hip function. With bipolar the return circuit is through the leads which is more efficient. Unipolar or bipolar hemiarthroplasty in the treatment of displaced. The prosthetic femoral head that articulates in the acetabulum same as unipolar, and a second area of articulation. Fortyone patients above 60 years of age and an acute displaced fracture of the femoral. Pdf unipolar hemiarthroplasty versus bipolar hemiarthroplasty in. Unipolar vs bipolar hemiarthroplastydennis zw ng and kevin bl lee 198 materials and methods all patients who underwent hemiarthroplasty for displaced neck of femur fractures between 1 january 2004 and 31 december 2007 were analysed from a log of all operative procedures. There are two types of options, including unipolar hemiarthroplasty uh and bipolar hemiarthroplasty bh, when using a hemiarthroplasty. Unipolar hemiarthroplasty versus bipolar hemiarthroplasty in patients with displaced femoral neck fractures. Lack of clear guidelines is reflected by the continued debates regarding their management namely osteosynthesis vs arthroplasty. Considering clinical outcomes, general health and costs, it can be concluded that the choice of endoprosthesis does not pose an obstacle to a patients recovery. Step 2 snap the polyethylene liner over the implanted femoral head.
In a bipolar hemiarthroplasty there are two points of movement bi 2. Prediction of a unipolar chinese century is entirely contrary to the post cold war forecast of multipolarization. Bipolar hemiarthroplasty in elderly patients presenting. Unipolar versus bipolar exeter hip hemiarthroplasty. However, in 20, they reported the 4year followup for this same. The overall dislocation rate after bipolar hemiarthroplasty is 0. Unipolar versus bipolar hemiarthroplasty for displaced femoral neck. Theoretically, a bipolar ha is therefore expected to result in better hip. The primary aim of this study was to analyse the outcome regarding hip function and hrqol after a displaced femoral neck fracture in the most. Check the interlock of the components, and reduce the unipolar head into the acetabulum. Unipolar versus bipolar hemiarthroplasty for displaced. We hypothesised that selection criteria for unipolar or bipolar prostheses could be constructed based on factors affecting mortality.
Unipolar versus bipolar hemiarthroplasty for displaced femoral neck fractures. Bipolar results from disturbances in the areas of the brain that regulate mood it involves periods of excitability mania alternating with periods of depression this may affects men and women equally usually appears between ages 15 25 cause unknown it occurs more often in relatives of people with bipolar disorder, if you believe you have bipolar you might want to visit somewhere like. Step 1 after cleaning and drying the femoral neck trunnion, impact the appropriate femoral head onto the stem with the femoral head impactor. The aim of this study was to compare the outcome of unipolar with the bipolar prosthesis in geriatric patients. However, there is inadequate evidence to support the choice between unipolar or bipolar hemiarthroplasty. Advantages of the unipolar prosthesis include lower cost and no risk of polyethylene wear debris. Displaced femoral neck fractures fnfs in healthy elderly patients have traditionally been managed with hemiarthroplasty ha or total hip arthroplasty tha, with studies suggesting that tha may be the better option. Bipolar disorder is characterized by cyclic depressive as well as manic or hypomanic episodes, but the depressive phase of the bipolar disorder appears identical to unipolar depression. The mosfet part gives high input impedance and voltagemode switch. In this study, they observed a clear decrease in acetabular erosion rates in the bipolar group 5% bipolar vs 20% unipolar, p. Difference between bipolar and unipolar bipolar vs unipolar. Hemiarthroplasty ha has been a mainstay treatment for displaced femoral neck fractures for many years. There were no significant differences between the groups regarding complications.
Unipolar prostheses has a onepiece design where the hip movement occurs between the prosthesis and the acetabulum hip socket. But under current conditions, a bipolar international configuration is more likely than a multipolar or unipolar one. Free fulltext pdf articles from hundreds of disciplines, all in one place unipolar versus bipolar hemiarthroplasty for displaced femoral neck fractures. Monopolar electrocautery monopolar electrosurgery can be used for several modalities including cut, blend, desiccation, and fulguration. The cemented unipolar prosthesis for the management of. The patients who underwent unipolar hip hemiarthroplasty were older 82. Hip dislocation after modular unipolar hemiarthroplasty. A systematic literature search up to april, 2014 was conducted to include rcts comparing bh with uh.
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