Search Results
Results 201 - 250 of 1289
< 1 2 3 4 5 6 7 8 9 10 >
Dixon Sean M - - 2009
We report a 10% failure rate for aseptic loosening and overall revision rate of 15% at 5 years mean follow up in 190 patients using the Cormet 2000 Dual coat acetabular component. Between 2001 and 2004, the original Dual coat component was used in our region by 4 experienced arthroplasty ...
Simon Jean-Pierre - - 2009
Between 1991 and 2003, the senior author performed 42 bilateral total hip arthroplasties as a single-stage procedure in 21 patients less than 35 years old. One patient was lost to follow-up, leaving 40 total hip arthroplasties in 11 male and 9 female patients for review, with a mean follow-up of ...
Hungerford Marc W - - 2009
Cementless total hip replacement has been advocated for patients with osteonecrosis of the femoral head. This study examined the outcome of the femoral stem of four generations of an uncemented, proximally porous-coated, chrome-cobalt total hip prosthesis. There were 158 cases in 141 osteonecrosis patients (74 men, 67 women) who had ...
McCalden Richard W - - 2009
BACKGROUND: Highly cross-linked polyethylene was introduced for clinical use in total hip arthroplasty with the expectation that it would exhibit less wear when compared with conventional polyethylene. The purpose of this study was to report the clinical and radiographic results, after a minimum of five years of follow-up, of a ...
Stilling Maiken M Department of Orthopaedics, Aarhus University Hospital, Tage-Hansens Gade 2, Aarhus C, Aarhus, Denmark. - - 2009
Ceramic femoral heads were developed to reduce the wear of conventional ultrahigh-molecular-weight polyethylene (UHMWPE) bearing surfaces in THA. We compared the wear rates of PE acetabular components bearing against femoral heads of zirconia (Zr) or cobalt-chromium (CoCr) in young patients. One surgeon inserted CoCr femoral heads in all 33 patients ...
Fox Tyler J - - 2009
INTRODUCTION: This study was conducted to determine the survival of different glenoid component designs, assess the reasons for revision surgery, and identify patient and diagnostic factors that influence this need. METHODS: Between January 1, 1984, and December 31, 2004, 1337 patients underwent 1542 total shoulder arthroplasties with 6 types of ...
Wysocki Robert W - - 2009
We evaluated the performance of a contemporary cementless acetabular component at a minimum of 5 years postoperatively. One hundred eighty-seven consecutive acetabular component revisions were performed using a hemispherical porous-coated component. Patients were followed prospectively with radiographs and Harris hip scores. Twenty patients died, leaving 158 patients (166 hips) available ...
Miller Anna N AN Department of Orthopedic Surgery, Hospital for Special Surgery, 535 E. 70th Street, New York, NY 10021, - - 2009
The low wear rates associated with ceramic hip articulations have made them a popular bearing for younger patients. Although few complications have been observed, one report revealed several instances of incomplete seating of the ceramic liner in the metallic shell. We performed a cohort study of consecutive THAs using a ...
Huddleston James I - - 2010
The long-term results of Hylamer implants have not been reported previously. Clinical and radiographic results of a consecutive series of 43 patients (45 hips) who had primary total hip arthroplasty using Hylamer liners were compared with those of 37 patients (43 hips) who had conventional liners after 10-year follow-up. The ...
Saltman Benjamin E - - 2009
To evaluate the incidence of alarplasty in primary and revision rhinoplasty during a 3-year period. We conducted a retrospective medical record review of patients undergoing primary and revision rhinoplasty between January 1, 2004, and December 31, 2006. Patients were divided into the following categories: primary or revision rhinoplasty, alarplasty, and ...
Chandrasekar C R - - 2009
We undertook a cemental unipolar proximal femoral endoprosthetic replacement in 131 patients with a mean age of 50 years (2 to 84). Primary malignant tumours were present in 54 patients and 67 had metastatic disease. In addition, eight patients had either lymphoma or myeloma and two had non-oncological disorders. The ...
Sun Chuang - - 2009
The aim of this study was to evaluate the clinical and radiographic results of cementless acetabular revision with deep frozen morsellised allografts. Sixty-one patients (65 hips) underwent acetabular revision using cementless components and deep frozen morsellised allografts. Fifty-seven hips (53 patients) were reviewed at a mean of 105.1 months (range ...
Thien Truike M - - 2010
Eighty patients (84 hips) randomly received an anteverted cobalt-chromium stem (Lubinus SP2; Waldemar Link, Hamburg, Germany) with matte, polymethyl methacrylate-coated, or polished surface (uncollared). Radiostereometry was used to study migration and wear; and the bone mineral density was studied with dual-energy x-ray absorptiometry at 6 months, 1 year, 2 years, ...
Lewis Peter M - - 2010
This prospective randomized study aims to compare the outcome between an alumina ceramic-on-ceramic (CC) articulation with a ceramic on ultra-high-molecular-weight polyethylene articulation (CP). Fifty-six hips in 55 patients with mean age 42.2 (range, 19-56) each received uncemented components, a 28-mm alumina head with randomization of acetabular liner. Mean St Michael's ...
Davies Howard - - 2010
We report the mean 15.2 year follow-up results for a porous coated version of the Bi-Metric (Biomet UK Ltd, Bridgend, UK) uncemented femoral stem in young patients. Sixty-four hips were implanted into 54 patients (mean age, 54.3 years) and followed up using the Hospital for Special Surgery score and regular ...
Jialiang Tian - - 2009
We evaluated the clinical and radiographic results of 67 (64 patients) cementless Duraloc-300 cups for young active patients after a mean follow-up period of 6.2 years. The preoperative mean Harris hip score improved from 46.24 to 96.5 points at 5 years. The survivorship of the cup, using radiographically confirmed aseptic ...
Friedl Gerald - - 2009
BACKGROUND: Aseptic loosening is the most frequent cause of implant failure in total hip arthroplasty. While a direct link between aseptic loosening and periprosthetic bone loss remains elusive, there is plentiful evidence for a close association with early implant migration. The present trial was primarily designed to evaluate whether a ...
Daniel J - - 2009
We describe the findings at six years in an ongoing prospective clinicoradiological and metal ion study in a cohort of 26 consecutive male patients with unilateral Birmingham Hip Resurfacing arthroplasties with one of two femoral head sizes (50 mm and 54 mm). Their mean age was 52.9 years (29 to ...
Yoshitomi Hiroyuki - - 2009
In the 1980s, zirconia was introduced for THA with the expectation of lower polyethylene wear and better clinical results. However, several studies have reported poor survivorship of zirconia-polyethylene THA. We performed a systematic review and meta-analysis of zirconia-polyethylene THA to confirm or refute the theoretical advantages of this combination. Of ...
Shia Derek S - - 2009
Highly cross-linked polyethylene has been associated with low in vitro wear, but also has decreased in vitro ultimate yield strength. We therefore asked whether highly cross-linked polyethylene would result in lower outcome scores, wear, or early failure in a young patient population. Seventy THAs in 64 patients were performed using ...
Aldrian Silke - - 2009
A variety of different bearing surfaces have been used to avoid osteolysis following hip replacement. We report a retrospective review of medium-term results of a modern ceramic-ceramic bearing (Biolox, CeramTec, Plochingen, Germany) and uncemented components (Alpha Cera Fit Alphanorm, Lassnitzhohe, Austria) in 107 hip arthroplasties. The clinical outcome based on ...
Jacobi Joshua A - - 2009
We tested whether routine preprocedure fluoroscopy of the femoral head would improve sheath placement or reduce the incidence of groin complications. Patients were randomized to receive either fluoroscopy or "blind" sheath placement using palpation alone. The location of the femoral sheath was established by femoral artery angiography. Sheath placement in ...
Cwanek Janusz - - 2009
40 samples of stem surfaces of the Weller endoprosthesis of hip joint removed because of aseptic loosening were tested. The patients between the ages of 61 and 87 were examined and the exploitation time of endoprosthesis ranged from 1 to 20 years. The material analysed was as follows: I group ...
Sandiford Nemandra A - - 2009
We report the early results of 10 consecutive metal-on-metal resurfacing arthroplasties performed between May 2006 and July 2007 in young, active patients with gross femoral head defects. Failure was classified as revision for any reason. The mean age of our cohort at the time of surgery was 42.8 years and ...
Kerin Cronan - - 2009
No evidence based guidelines on surveillance of cemented total hip arthroplasty exist. We reviewed outcomes of this procedure from 1996 & 1997. Patients were identifed from theatre log books. Follow up data was retrieved from patient records. Evidence of radiological loosening & time of revision were recorded. Data was analysed ...
Ferrell Michael S - - 2009
The porous-coated anatomic (PCA) total hip was a first-generation cementless implant system introduced in 1983 for both primary and revision total hip arthroplasty. Between February 1983 and June 1989, 219 uncemented PCA total hips were implanted in 194 patients as part of a multisurgeon, single-institution, prospective study. Short-term follow-up data ...
Spear Scott L - - 2009
Although breast augmentation is a procedure with a high patient satisfaction rate, at some point in time, some patients will need a revision. A better understanding of what leads to revisions is desirable to determine whether the frequency of revisions can be reduced. With that in mind, we reviewed all ...
Ren Weiping - - 2009
There is currently no cure for aseptic loosening (AL) of total joint replacement (TJR) except surgical revision. The purpose of this study was to determine whether oral EM could improve the periprosthetic tissue profiles and reduce serum cytokine production in AL patients who are candidates for surgical revision. We recruited ...
Gao Feng - - 2009
The optimal mode of femoral fixation in total knee arthroplasty (TKA) remains controversial, especially for the young patient. In a prospective randomised study we compared the magnitude and pattern of the fixation of cemented versus uncemented femoral components during 2 years in patients younger than 60 years. Forty-one knees in ...
Holloway Ian P - - 2010
This study reexamines the clinical and radiologic results of the first 216 cases of a cementless fixed-bearing tibial tray without screw holes in 191 patients at 7.6-year follow-up (range, 5-10 years). Mean Hospital for Special Surgery scores improved from 54/100 preoperatively to 84/100 postoperatively. Four tibial baseplates were revised. Five ...
Kanoh Toshiya - - 2010
Between February 2005 and August 2006, we recorded acetabular component orientation in 90 patients (100 hips) who underwent primary total hip arthroplasty (THA), to determine whether using an alignment guide ensures accurate acetabular positioning. In the alignment-guide group (46 patients; 48 hips), a guide was placed on the pelvis, a ...
Lang Jason E - - 2010
Use of the rim-fit technique in revision acetabular surgery was reviewed for 20 hips in 18 patients. Defects at revision surgery included isolated medial segmental and global cavitary deficiencies with largely intact peripheral rim. A cementless acetabular component is placed to achieve a press-fit against the bony acetabular rim after ...
Qiu XueYong - - 2009
A retrospective study was undertaken to evaluate the clinical and radiographic outcomes of 74 cementless total hip arthroplasties (THA) in 69 young Chinese patients. The Asian size and MMA AML stems with smoothly tapered tip were used, and the patients were followed up for at least five years. The mean ...
Lewis Peter M - - 2008
The purpose of this investigation was to assess the midterm clinical outcomes after implantation of Oxinium (OX) vs cobalt-chrome (CC) femoral heads. Primary total hip arthroplasty (THA) procedures were performed in 100 patients. After randomization, half of the patients received OX femoral heads and half received CC femoral heads. At ...
Lewis Peter M - - 2008
The Echelon Primary femoral stem is an extensively porous coated cylindrical cobalt chrome hip component. A prospective review of 392 Echelon stems revealed excellent survivorship of the stem, with a 99.3% survival rate for aseptic loosening and a 98.3% survival rate for revision for any reason at 8 years. Normalized ...
Bauchu Philippe - - 2008
Dislocation is a leading cause of revision after total hip arthroplasty (THA). To address this risk, dual-mobility technology was developed, which features a mobile polyethylene liner locked onto a femoral head and articulating in a metallic acetabular shell. This study reports clinical outcome data after implantation of the third-generation POLARCUP ...
Geerdink Carel H - - 2009
Wear particle-induced osteolysis is a major cause of aseptic loosening in THA. Increasing wear resistance of polyethylene (PE) occurs by increasing the cross-link density and early reports document low wear rates with such implants. To confirm longer-term reductions in wear we compared cross-linked polyethylene (irradiation in nitrogen, annealing) with historical ...
Timperley A John - - 2009
The quality of technique used at the time of socket cementation is crucial in ensuring a durable long-term result of the implant. We asked whether a new instrument, an aspirator retractor introduced into the wing of the ilium before socket preparation and cementation, would enhance cement fixation as defined by ...
Wetmore Stephen J - - 2008
OBJECTIVE: To analyze the results of primary and revision endolymphatic sac surgery for the treatment of Ménière's disease in patients who failed medical therapy. DESIGN: Retrospective medical chart review. SETTING: Tertiary referral center. PATIENTS: Fifty-one adult patients with Ménière's disease who failed medical therapy. INTERVENTIONS: Endolymphatic sac to mastoid shunts ...
Utting M R - - 2008
We have reviewed 70 Harris-Galante uncemented acetabular components implanted as hybrid hip replacements with cemented stems between 1991 and 1995 in 53 patients whose mean age was 40 years (19 to 49). The mean follow-up was for 13.6 years (12 to 16) with no loss to follow-up. We assessed the ...
de Kam D C J - - 2008
We evaluated the outcome of 104 consecutive primary cemented Exeter femoral components in 78 patients (34 men, 44 women) under the age of 40 years who underwent total hip replacement between October 1993 and May 2004. The mean age at operation was 31 years (16 to 39). No hip was ...
Moon Kyoung Ho - - 2008
PURPOSE: This study examined the rate of degeneration of acetabular cartilage by the bipolar head according to time, and also which clinical factors are related to the degeneration of acetabular cartilage. MATERIALS AND METHODS: Among 192 patients (226 hip joints) who received bipolar hemiarthroplasty from August 1996 to August 2002, ...
Lombardi Adolph V AV - - 2009
Tapered titanium porous plasma-sprayed components have performed well in primary THA. To confirm the literature at longer followup we retrospectively reviewed all 1639 patients who underwent 2000 THAs in which a specific porous femoral component was used. One hundred fourteen patients (134 hips) were lost to followup leaving a cohort ...
Pierannunzii Luca L III Division of Orthopaedics and Trauma, Gaetano Pini Orthopaedic Institute, Piazza C. Ferrari, 1, 20122 Milan, Italy. - - 2008
Osteolytic lesions are common radiological findings behind acetabular prosthetic cups. If the cup is well-fixed, the management is quite controversial. Although implant exchange is the most reliable procedure, in most cases it could be considered overtreatment, with the potential for further morbidity and bone loss. Liner exchange associated with lesion ...
Siegmeth Alexander A Department of Orthopaedics, Golden Jubilee National Hospital, Glasgow, - - 2009
Large acetabular defects can be reconstructed with various methods depending on size and location of the defect. We prospectively followed our first 37 patients in whom we reconstructed the acetabulum with a trabecular metal augment combined with a trabecular metal shell. Three patients died before completing the minimum 24 months ...
Restrepo Camilo C Department of Orthopaedic Surgery, Thomas Jefferson University Hospital, Rothman Institute, Philadelphia, PA 19107, - - 2009
Polyethylene wear and osteolysis are not uncommon in THA mid- and long-term. In asymptomatic patients the dilemma faced by the orthopaedic surgeon is whether to revise the cup and risk damage to the supporting columns and even pelvic discontinuity or to perform isolated polyethylene exchange and risk a high rate ...
Yamashita Takayuki - - 2008
STUDY DESIGN: A retrospective study of patients undergoing palliative surgery for metastatic spinal tumors. OBJECTIVE: To investigate short-term functional recovery and duration of improvement after palliative surgery, to correlate these outcomes with the revised Tokuhashi score, and to examine the relationship between function and neurologic deterioration. SUMMARY OF BACKGROUND DATA: ...
Ihle M - - 2008
In a prospective study, 93 unselected consecutive uncemented hip arthroplasties were performed in 80 patients using the titanium-coated RM acetabular component and the CLS femoral component. The mean age of the patients at operation was 52 years (28 to 81). None were lost to follow-up. In the 23 patients who ...
Mäkelä Keijo T - - 2008
BACKGROUND: According to the long-term results obtained from the Scandinavian arthroplasty registries, cemented total hip replacement has been the treatment of choice for osteoarthritis of the hip in elderly patients. The aim of the present study was to analyze population-based survival rates of the cemented and cementless total hip replacements ...
Gallo J - - 2008
PURPOSE OF THE STUDY Hydroxypatite coating (HAC) was introduced into total hip arthroplasty (THA) practice to improve the fixation interface between bone and prosthesis. To test this assumption however, long-term follow-up investigations are needed. In this study, we present data for two consecutive series of THA stems with HAC and ...
< 1 2 3 4 5 6 7 8 9 10 >