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Protrusion of unipolar prosthesis and conversion to THA. 

Protrusion of unipolar prosthesis and conversion to THA. 

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Purpose of this study was to evaluate the outcomes of patients underwent hemiarthroplasty for proximal femoral fracture converted to total hip arthroplasty (THA). A total of 138 patients from October 2009 till October 2014 had conversion of their failed hemiarthroplasties following a proximal femoral fracture to total hip arthroplasty (THA) in Erfa...

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... main indications for conversion arthroplasty were stem loosening in 75 patients (54.4%) ( Fig. 3) and acetabular erosion in 66 patients (47.7%); there were also 12 patients (8.6%) with an unreduced dislocation (Fig. 4); 9 patients (6.5%) with femoral erosion and 6 patients (4.3%) with protrusion (Fig. 2). The mean time from primary operation to appearance of symptoms in patients with alone stem loosing was 41 months (range 6-108 months), 57 months for alone acetabular erosion (range 18-108 months), 34 months for combination of acetabular erosion and stem loosening (range 6-96 months), 15 months for dislocated hemiarthroplasty (range 6-24 months), and 96 months for femoral erosion (range 96-96 ...
Context 2
... patients (7.24%) had infection. The mean preoperative HHS score was 44.93 ? 8.40 in patients (ranged 30-62). The average of shortening was 1.79 ? 1.11 preoperatively in patients (ranged 0-5). Thirty-three patients (23.80%) had acetabular deficiency (23 patients Paprosky type 1 (69.6%) and 10 patients Paprosky type2 (30.4%)) and 6 patients were managed with femoral bulk allograft; 6 patients with PE cemented; 12 of them with central IM Augment and 9 patients with reflection cup (Fig. 2). Fractures of the femur and trochanteric avulsion were treated by cerclage wiring and weight bearing was delayed for 3 months in patients with intraoperative ...

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Citations

... increasing to 95.41±2.27 at the final follow-up assessment. During the course of the study, dislocation was observed in 6 patients, constituting 4.34% of the cases [12] . ...
... The reported rates of PJI after hip arthroplasty for hip fractures vary between 0 and 18% with an average PJI rate of 2-4% [11,12]. The poor medical status of patients with older age increases associated comorbidity factors, and surgery performed for a hip fracture associated with a fracture hematoma increases the risk of PJI. ...
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... [2][3][4][5][6] The most used technique for management of infections is staged re-implantation of prosthesis after systemic antibiotic therapy. [7] Despite of lower rate of infection after primary THA (<1%), [2,5,6,[8][9][10][11] the rate of infection after 2-step THA is reported between 3.2% and 13%. [12][13][14][15] Recent guidelines have mentioned the improvement in diagnostic approaches of pre-operative infections. ...
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... Thus, the femoral canal will be filled with cement and then implant will be inserted, after a while it will be fixed in its place. [2][3][4][5] These patients can soon put their weight on the member and with a physiotherapy session (almost immediately after the surgery) walk without any help. ...
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... In his stuady he found that the less favorable results associated with revision THA were only partly explained by the greater morbidity and older age. In Afshin Taheriazam et al. [12] suggest good functional outcome after revision hip arthroplasty and due to less duration of study period, small sample size and also we found that aseptic loosening was the most common indication for revision. ...
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Background: Conversion total hip arthroplasty (cTHA) is increasingly utilized as a salvage procedure for complications associated with fracture fixation around the hip and acetabulum and for failed hip preservation surgery. While primary THA (pTHA) has a high success rate, little is known about outcomes following conversion THA. The purpose of this study is to evaluate patient reported outcomes (PROs) and complication rates following conversion THA compared to primary THA. Methods: Patients that underwent cTHA or pTHA from 2015-2020 at a large tertiary referral academic center were retrospectively identified. THA patients were propensity matched in a 1:1 fashion by age, body mass index (BMI), and sex. Pain scores and PROMIS physical function (PF), pain interference (PI), and depression (DA) scores were compared at preoperative and final postoperative follow up timepoints using independent t-tests. Differences in complication and reoperation rates between cohorts were assessed using chi square analysis. Results: A total of 118 THAs (59 cTHA, 59 pTHA) were included in this analysis with an average follow up of 21.3 months. cTHAs were most commonly performed following hip fracture fixation (50.8%). The conversion cohort had significantly longer lengths of stay (3.6 days vs 1.9 days, p<0.01) and greater use of revision-type implants (39.0% vs 0.0%, p<0.01) compared to pTHA. There was no significant difference in complication rates (cTHA = 15.3%, pTHA = 8.5%; p=0.26), with intraoperative fracture being the most common for both. Primary and conversion THA groups also experienced similar reoperation rates (cTHA = 5.1%, pTHA = 6.8%; p=0.70). No significant differences in PROs at final follow up were identified between groups. Conclusion: Patients undergoing cTHA required increased utilization of revision hip implants and had longer lengths of stay, but had comparable complication and reoperation rates, and ultimately demonstrated similar improvements in PROMIS scores compared to a matched cohort of pTHA patients. Level of Evidence: III.
... 12 With the development of acetabular arthritis, conversion of HA to THA is commonly performed for pain relief to remove the articular bearing against the metal prosthetic femoral head. [13][14][15] Compared to primary THA, HA conversion to THA has been associated with higher rates of reoperations and complications. [16][17][18][19] Studies demonstrating matched cohorts have involved conversions done for all failed hip fractures, including those receiving cephalomedullary nails, percutaneous screw fixation, and sliding hip screws. ...
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Background: One of the most common surgical options for treatment of a femoral neck fracture is hemiarthroplasty (HA). However, progression of arthritis or pain can necessitate conversion to total hip arthroplasty (THA). While conversion to a THA is a viable option, it does carry multiple risks. The purpose of this study was to identify whether performing conversion from HA to THA carries an increased risk of post-operative joint complications when compared to elective THA. Methods: An administrative claims database was queried to identify patients who underwent conversion from a HA to a THA. Incidences of prosthetic dislocation, prosthetic joint infection (PJI), periprosthetic fracture, aseptic loosening, and revision were collected and compared to elective primary THA with multivariable logistic regression. Results: Patients undergoing conversion THA had significantly higher risks of all joint complications examined at both 1 and 2 years after surgery. These included prosthetic dislocation (1-year: OR 2.95; 2 years: OR 3.77), PJI (1-year: OR 1.38; 2 years: OR 2.13), periprosthetic fracture (1-year: OR 2.95; 2 years: OR 3.75), aseptic loosening (1-year: OR 6.86; 2 years: OR 7.70), and revision (1-year: OR 3.65; 2 years: OR 6.73). Conclusion: Performing conversion arthroplasty from HA to THA is associated with an increased risk of multiple joint complications in both the short and mid-term follow-up period. Surgeons should consider these complications when indicating HA for femoral neck fractures and elective conversion arthroplasty.
... Acetabular erosion and stem loosening have been reported to be two most common causes of failure after a HA procedure. The mean time from index surgery to those symptomatic failures ranged from 34 to 96 months [29]. A modern generation of DM-THA has been reported with excellent long-term implant survival (more than 95% at 10-year follow-up) [30]. ...
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Background: Elderly patients with femoral neck fractures are at a higher risk of dislocation after hip arthroplasty procedures. In comparison with total hip arthroplasty (THA), bipolar hemiarthroplasty (HA) and dual-mobility total hip arthroplasty (DM-THA) can be an effective alternative treatment which increases the effective head size and overall stability of the prosthesis. We aim to review the current evidence on the outcome after DM-THA and HA for femoral neck fractures in the elderly. Methods: We performed a comprehensive review of literatures on PubMed, Embase, Web of Science and the Cochrane Library for randomized controlled trials and comparative interventional studies. Of the 936 studies identified, 8 met the inclusion criteria (541 DM-THA and 603 HA procedures). Two reviewers independently reviewed and graded each study and recorded relevant data including dislocation rate, implant failure rate, reoperation rate, one-year mortality rate, Harris hip score (HHS), operation time and intraoperative blood loss. Results: DM-THA was associated with a lower dislocation rate (OR: 3.599; 95% CI 1.954 to 6.630), a lower reoperation rate (OR: 2.056; 95% CI 1.211 to 3.490), an increased operation time (SMD: -0.561; 95% CI -0.795 to -0.326) and more intraoperative blood loss (SMD: -0.778; 95% CI -1.238 to -0.319), compared with the HA group. Moreover, the multivariate regression analysis revealed that age, female sex, posterolateral surgical approach, choice of DM-THA or HA were not associated with dislocation or reoperation. Conclusions: Based on the current evidence, the advantages reported for DM-THA over HA with regards to dislocation and reoperation rate in elderly patients with FNF remain inconclusive. High-quality studies on the high-risk patients with cognitive disorder or dementia are necessary to validate the value of DM-THA.
... These advantages of HA ostensibly make it a superior treatment for older adults with various underlying comorbidities [1,5]. Some concerns in relation to HA have been discussed in other studies: The reoperation rate for failed HA is reportedly as high as 24%, and the problem of acetabular wear has been noted as the primary cause of HA failure [11][12][13][14][15]. These concerns might provide additional motivation for the recommendation of primary THR for FNF displacement. ...
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Background Femoral neck fracture (FNF) is among the commonest fractures affecting the geriatric population. Hemiarthroplasty (HA) is a standard treatment procedure and has been performed by hip surgeons for decades. Recently, primary total hip replacement has proved advantageous for the treatment of such fractures. The aim of this study is to retrospectively review all causes of failure of all patients who underwent HA in our institute and reevaluated whether HA remains a favourable choice of treatment for patients with displaced FNFs. Methods A total of 4516 patients underwent HA at our centre from 1998 to 2017. The HA implants included unipolar and bipolar prostheses. Patients diagnosed with displaced FNF, underwent primary HA initially, required second revision procedures, and followed up for a minimum of 36 months were included in this study. Data were collected and comprehensively analysed. Results In 4516 cases, 99 patients underwent second surgeries. The revision rate was 2.19%. Reasons for failure were acetabular wear (n = 30, 30.3%), femoral stem subsidence (n = 24, 24.2%), periprosthetic fracture (n = 22, 22.2%), infection (n = 16, 16.2%), and recurrent dislocation (n = 7, 7.1%). The mean follow-up period was 78.1 months. The interval between failed HA and revision surgery was 22.8 months. Conclusion HA has a low revision rate and remains a favourable choice of treatment for patients with displaced FNFs.