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Results 201 - 250 of 2813
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Varela-Egocheaga José Ramón - - 2010
Minimally invasive knee arthroplasty seeks to diminish the problems of traditional extensile exposures aiming for more rapid rehabilitation of patients after surgery. To determine if the subvastus approach results in less perioperative pain and blood loss, shorter hospital stay, and improved function at both early and long-term followup. One hundred ...
Pan W-M - - 2010
This prospective randomized study compared the clinical and radiological results of primary total knee arthropasty (TKA) using a mini-subvastus approach (group I; n = 35) or a standard approach (group II; n = 33). A posterior-stabilized prosthesis was used in both groups by the same surgeon. Mean follow-up was 18 ...
Gómez-Barrena Enrique - - 2010
Better muscular recovery of the extensor mechanism after TKA is claimed by femoral designs based on a sagittal single radius. We aimed to compare postoperative knee performance through the Knee Society scores, flexor and extensor muscle function, stability, and gait of a series of patients receiving a posterior stabilized, cemented ...
Ike Robert W - - 2010
OBJECTIVE: To describe 1) a technique that can detect synovial effusions not seen on static ultrasound (US) examination and 2) the characteristics of patients with knee osteoarthritis (OA) for whom this technique proved useful. METHODS: From reviewed records of 76 patients with knee OA (112 knees) that we had seen ...
Thomeé Pia - - 2010
CONTEXT: The Knee Self-Efficacy Scale (K-SES) has good reliability, validity, and responsiveness for patients' perceived knee-function self-efficacy during rehabilitation after an anterior cruciate ligament (ACL) injury. Preoperative knee-function self-efficacy has also been shown to have a predictive ability in terms of outcome 1 y after ACL reconstruction. OBJECTIVE: To evaluate ...
Nishino Tomofumi - - 2010
The purpose of this study was to clarify the effect of gradual weight bearing (GWB) on regenerating cartilage. We developed a novel external fixation device (EFD) with a controllable weight-bearing system and continuous passive motion (CPM). A full-thickness defect was created by resection of the entire articular surface of the ...
Balakrishnan Vikram - - 2010
BACKGROUND: An important determinant of long-term outcomes following total knee arthroplasty (TKA) is post-operative alignment as measured on radiographs. Thus far, radiographs have been measured using the goniometer method (GM) and no standard protocol has been followed. The aim of this prospective study was to: (i) outline a protocol for ...
Zeni Joseph A JA - - 2010
Although total knee arthroplasty improves functional mobility in persons with end-stage knee osteoarthritis, many subjects have reported continued difficulty with stair ascent and descent after surgery. The purpose of the present study was to determine preoperative predictors of handrail use during stair ascent and descent following primary unilateral total knee ...
Hernández-Vaquero Daniel - - 2010
Rotating-hinge total knee prostheses may be used for the treatment of global instability about the knee. The designs of previous generations were associated with suboptimal outcomes. We evaluated the clinical and radiographic outcomes of salvage knee reconstructions using modern-generation, modular, kinematic rotating-hinge total knee prostheses. We retrospectively reviewed 26 rotating-hinge ...
Cheng Chun-Chien - - 2010
Congenital dislocation of the knee (CDK) is a very rare condition that comprises a spectrum of deformities from subluxation to complete dislocation. The incidence of CDK is estimated at 1 per 100,000 live births, which is 1% of the incidence of developmental dysplasia of the hip (DDH). Moreover, 40-100% of ...
Rodríguez-Merchán E Carlos EC Department of Orthopaedics, La Paz University Hospital, Paseo de la Castellana 261, 28046 Madrid, Spain. - - 2010
Patellar resurfacing (PR) in total knee arthroplasty (TKA) is controversial. The Outerbridge classification of cartilage defects in the patella is commonly used in the literature. The purpose of this study was to determine if the Outerbridge classification can predict the need for PR as part of total knee arthroplasty. Between ...
Hsu Wei-Hsiu - - 2010
Computer-assisted surgery-total knee arthroplasty (CAS-TKA) has been suggested to afford greater precision than conventional TKA; however, it is unclear whether this is influenced by preoperative angular deformity. This prospective study was conducted to determine the effect of preoperative angular deformity on the postoperative mechanical axis. Sixty patients underwent stage bilateral ...
John Joby - - 2011
We report the outcome of 94 Miller-Galante unicompartmental knee replacements done by a single surgeon over 16 years in a district general hospital in the UK. Patellofemoral arthritis was considered a contraindication only if symptomatic and confirmed on radiography and surgery. Deformity when present was correctable. The mean age at ...
Niemeyer Philipp - - 2010
We report the 2-year clinical results and identify prognostic factors in patients treated with autologous chondrocyte transplantation by use of a collagen membrane to seed the chondrocytes (ACT-CS). This is a prospective study of 59 patients who were treated with ACT-CS and followed up for 24 months. Clinical function was ...
Eriksson Karl - - 2010
It seems to be a general belief that knee flexion releases the tension on the popliteal artery (PA) and displaces it posteriorly. Furthermore, there are opinions suggesting that previous surgery may result in fibrosis and rigidity of the vessels in the posterior knee region, which can lead to tethering of ...
Devers Brandon N - - 2011
The purpose of this study was to determine whether high flexion leads to improved benefits in patient satisfaction, perception, and function after total knee arthroplasty (TKA). Data were collected on 122 primary TKAs. Patients completed a Total Knee Function Questionnaire. Knees were classified as low (≤110°), mid (111°-130°), or high ...
Matsuda Shuichi - - 2010
A prospective study was performed to compare the clinical and radiological results of mobile- and fixed-bearing total knee arthroplasty with specific attention to rotational alignment and range of motion. Sixty-one knees were assigned to total knee arthroplasty with either the NexGen LPS Flex fixed-bearing or with the NexGen LPS Flex ...
Hauschild Oliver - - 2010
Valid and reproducible measurements of limb alignment are prerequisites for planning, performing and evaluating TKAs. Although navigation systems have been shown to be reproducible tool for intraoperative TKA alignment measurements, particular doubt has been raised on the correlation with postoperative radiographic measurements. The aim of the present study was to ...
Massin P - - 2010
The rotating platform flexion (RPF) Sigma total knee prosthesis (DePuy; Warsaw, Indiana) was designed for maintaining the contact of the condyles with their corresponding tibial plateau throughout the high-flexion range. However, this requires an additional 3-mm bone cut of the posterior condyles. Compared to the conventional design, this modification is ...
Spahn G - - 2010
AIM: Numerous epidemiological studies have suggested a relationship between knee osteoarthritis and occupational load or, respectively, a kneeling or squatting position at work. Cartilage breakdown was clearly identified as the main mechanism of the osteoarthritic process. This arthroscopic study was aimed to evaluate the relationship between frequency and grade of ...
Müller-Rath R - - 2011
The non-operative treatment of medial degenerative joint disease of the knee has proven to be difficult due to the underlying deformity and the pathological mechanical loading. Valgus knee bracing offers the possibility to directly address the mechanical deficit. The aim of this study was to analyse whether or not part-time ...
Kisielinski Kai - - 2010
OBJECTIVES: In the literature, radiosynoviorthesis (RSO) has been associated only with a small number of complications. There is a trend towards increasing the use of RSO in diverse indications. After repeatedly observing several complications following RSO, a retrospective evaluation was undertaken to estimate the safety of this method. METHODS: Between ...
Guney Ahmet - - 2010
This study aimed to evaluate the short- and mid-term results of plica excision in patients with mediopatellar plica and associated cartilage degeneration. Seventy-six surgically treated patients with mediopatellar plica and associated cartilage degeneration at medial femoral condyle (MFC) and/or medial pole of patella were included. Patients were evaluated at baseline, ...
Kraenzlin Marius E ME Division of Endocrinology, Diabetes and Clinical Nutrition, University Hospital, 4031 Basel, Switzerland. - - 2010
Osteonecrosis (ON) in the knee occurs as a localized inflammatory disease in relation to spontaneous or non-traumatic ON. Conservative treatment possibilities are limited, and prognosis appears to be poor; in most cases, ON results in knee arthroplasty. Bisphosphonates are suggested to prevent bone resorption and collapse of necrotic bone. In ...
Sterett William I - - 2010
Active patients with arthritic malalignment of the knee are difficult to manage. Arthroplasty, unicompartmental or total knee replacement, may not be appropriate in patients who desire to remain highly active. High tibial osteotomy has been recommended for the treatment of varus osteoarthritis to decrease pressure on the damaged medial compartment. ...
Pearse A J - - 2010
We reviewed the rate of revision of unicompartmental knee replacements (UKR) from the New Zealand Joint Registry between 1999 and 2008. There were 4284 UKRs, of which 236 required revision, 205 to a total knee replacement (U2T) and 31 to a further unicompartmental knee replacement (U2U). We used these data ...
Pasquini Stephanie M - - 2010
PURPOSE: To determine whether patients using a wheeled walker post-total knee replacement (TKR) surgery walk differently prior to hospital discharge and 6 weeks after surgery when compared with patients using a standard walker. METHODS: Fifty-one patients, mean age 67.2 (8.3), seen for TKR were assigned to either a standard walker ...
Mohanlal Paraskumar - - 2010
A prospective study was performed to assess the intra-operative variation in femoral and tibial axis alignment during navigated total knee replacement. The intra-operative initial, trial and final mechanical axis alignments were recorded from the navigation system. The mean variation and correlation coefficient were calculated and analysed. There were 40 patients ...
Niki Yasuo - - 2010
Minimally invasive surgery (MIS) in total knee arthroplasty (TKA) reportedly yields decreased patient morbidity and a rapid return of function, but how much deformity can be accepted for MIS-TKA remains unclear. This study investigated 238 knees from 218 consecutive patients who underwent MIS-TKA. Patients were divided into groups with tibiofemoral ...
Oetgen Matthew E - - 2010
BACKGROUND: Congenital knee dislocation (CDK) is a rare congenital deformity, which often requires surgery for treatment. Little objective data exist characterizing the outcome of patients who require operative treatment for this condition. The purposes of this study were to objectively evaluate the functional, clinical, and gait outcomes of patients who ...
Watanabe Hiroyuki - - 2010
PURPOSE: To compare quality of life, knee function, and physical activity in 33 elderly women with or without early-stage knee osteoarthritis (OA). METHODS: 33 Japanese elderly women (mean age, 66 years) with (n=18) or without (n=15) early-stage knee OA symptoms (knee pain and decreased range of motion [ROM]) were recruited. ...
Saccomanni Bernardino - - 2010
There has been a resurgence of interest in unicompartmental knee arthroplasty (UKA) for treatment of medial unicompartmental knee osteoarthritis (OA). Improved prosthetic design, minimally invasive surgical techniques, and strict patient selection criteria have resulted in improved survivorship and functional outcomes. A review of orthopedic literature was conducted regarding the advantages ...
Smolders José M H - - 2010
To evaluate the short-term outcome of osteochondritis dissecans (OCD) treated with mosaic osteochondral autograft transplantation (OAT), 7 male patients (mean age 33.4) with 8 OCD lesions on the lateral border of the medial femoral condyle were prospectively followed. Patients were evaluated by the International Knee Documention Committee (IKDC) score and ...
Pan Kok Long - - 2010
PURPOSE: To identify initial symptoms of osteosarcoma around the knee joint. METHODS: Records of 19 men and 11 women aged 9 to 34 (mean, 17) years with osteosarcoma around the knee joint were reviewed. Each patient was interviewed (for a mean of 1.5 hours), and a detailed history of symptom ...
Huh Kenneth - - 2010
BACKGROUND: Although equinus is more common in cerebral palsy (CP), the prevalence of calcaneal gait (CG) has been reported at more than 30% among patients with CP, even in the absence of prior surgical intervention. The goal of this study was to identify patient characteristics predictive of the development of ...
Kim Young-Hoo - - 2010
Periprosthetic osteolysis is an increasingly prevalent complication of TKA. To reduce the polyethylene wear and periprosthetic osteolysis, particularly in young patients, the design of the contemporary fixed-bearing TKAs has been modified and mobile-bearing TKAs have been introduced. We asked whether the prevalence of osteolysis would be less in well-functioning mobile-bearing ...
W-Dahl Annette - - 2010
In Sweden, surgery for knee osteoarthritis (OA) in patients younger than 55 years of age has doubled during the last 10 years. We evaluated the use of 3 surgical alternatives: high tibial osteotomy (HTO), unicompartmental arthroplasty (UKA), and total knee arthroplasty (TKA). We also examined the outcome, expressed by rate ...
Kauppila Anna-Maija - - 2010
OBJECTIVE: To examine whether a multidisciplinary rehabilitation programme can improve functional recovery and quality of life and reduce the use of rehabilitation services compared with conventional care one year after total knee arthroplasty. DESIGN: Prospective, randomized, non-blinded, controlled trial. SETTING: An outpatient centre-based setting. SUBJECTS: Eighty-six patients who were scheduled ...
Boopalan P R J V C - - 2011
This study aimed to determine the efficacy of PEMF (pulsed electromagnetic field) treatment in experimental osteochondral defect healing in a rabbit model. The study was conducted on 12 New Zealand white rabbits. Six rabbits formed the study group and six rabbits the control group. The right knee joints of all ...
Molli Ryan G - - 2011
The purpose of this study was to evaluate the effectiveness of software advancements in improving total knee component positioning and limb alignment when using computer-aided navigation. A single total joint fellowship-trained surgeon performed unilateral total knee arthroplasty on 315 patients using conventional techniques or with assistance from computer navigation software. ...
Campbell D - - 2010
INTRODUCTION: Ligament balancing is an established surgical technique in total knee arthroplasty with good clinical results. A similar technique for unicondylar knee arthroplasty was developed. The aim of this study was to asses the outcomes of a unicondylar knee replacement implanted with a ligament tensor. MATERIALS AND METHODS: A prospective ...
Nakamura Shinichiro - - 2010
The Bi-Surface Knee System (Japan Medical Material, Kyoto, Japan), which has a unique ball-and-socket joint and whose femoral component is made from alumina ceramic, was designed to improve deep knee flexion and long-term durability after total knee arthroplasty. The purpose of this study was to review the clinical results of ...
Kilincoglu Volkan - - 2011
A bilateral total knee prosthesis procedure can be performed simultaneously in patients with bilateral gonarthrosis. The purpose of this study was to evaluate the differences in component alignment between the simultaneous bilateral TKA and unilateral TKA. A total of 20 patients out of 40 underwent simultaneous bilateral TKA, whereas 20 ...
Chen Wei-Ping - - 2010
This study investigated the effects of the histone deacetylase (HDAC) inhibitor trichostatin A (TSA) on cartilage degradation in an experimental model of osteoarthritis (OA). Thirty-two male New Zealand rabbits underwent unilateral anterior cruciate ligament transection (ACLT) on left knee joints to induce OA and were randomly divided into two groups ...
Cheng Tao - - 2010
Concerns have been raised regarding minimally invasive surgery (MIS) and its possible effect on postoperative functional recovery, complications, and survival rate after TKA. We specifically asked whether MIS TKA would be associated with (1) increased operative time, (2) reduced blood loss, (3) shortened hospital stay, (4) faster recovery of ROM, ...
Bito Haruhiko - - 2010
In the current study, we evaluated changes in the patellofemoral joint indices in 49 knees from 39 patients (11 men and 28 women with a median age of 64 years; range 53-79) who had undergone an opening wedge high tibial osteotomy (OWHTO). Osteoarthritis had been diagnosed in 39 knees and ...
Youm Yoon-Seok - - 2010
We hypothesized that changes in patellar thickness following patellar resurfacing affect patellar tilt in total knee arthroplasty (TKA) patients. The study enrolled 272 TKAs and categorized them into four groups according to change in patellar thickness: (A) thinner by 1 mm or more, (B) equal or thinner by less than ...
Ni Guo-Xin - - 2010
BACKGROUND: Tai chi (TC) is proposed as a potential option for the management of osteoarthritis (OA), however, its beneficial effect on patients with knee OA has not been convincing. OBJECTIVES: To evaluate the effect of a 24-week TC program on physical functions in older Chinese women with knee OA. METHODS: ...
Rechcińska-Roślak Beata - - 2010
BACKGROUND: The goal of the study was to compare surgical approaches to the knee joint (anterior-medial approach--midvastus type and anterior-medial--midpatellar type) and assess their influence on post-operative range of motion, muscle strength, pain intensity and the rate of progress of rehabilitation in patients with different degrees of knee joint function. ...
Demey Guillaume - - 2010
BACKGROUND: Total knee arthroplasty can involve substantial blood loss. We prospectively studied a consecutive series of patients undergoing primary total knee arthroplasty to assess the influence of femoral cementing on perioperative blood loss. We hypothesized that an uncemented femoral component is a risk factor for bleeding. METHODS: A semiconstrained posterior ...
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