Correct alignment of the leg and positioning of the components are important factors in good long-term outcome of total knee arthroplasty (TKA). Computer-assisted navigation systems were introduced to improve component alignment accuracies. The three main hypotheses of this study were that the navigated compared to jig-based patient will show the ...

Prospective cohort study. To measure changes in muscle strength, range of motion, and function from 2 weeks before to 6 months after total knee arthroplasty (TKA) and compare outcomes with data from a control group consisting of healthy adults. Total knee arthroplasty successfully alleviates pain from knee osteoarthritis, but deficits ...

Unicompartmental knee arthroplasty has been associated with faster recovery with less potential perioperative morbidity compared to total knee arthroplasty. This study investigates the rate of transfusion, symptomatic thromboembolic events, and length of hospital stay in 1000 consecutive, unicompartmental knee replacements performed by 2 surgeons. A rapid recovery protocol coupled with ...

Various methods and means are available for patients in rehabilitation after arthroplasty of the knee with total endoprosthesis, including the use of devices with biofeedback, thanks to which the patient learns conscious control of the given activity in a way adequate to the information received. Therapy with biofeedback is especially ...

Survivorship following modern total knee arthroplasty (TKA) is good with revision rates generally lower than for total hip arthroplasty (THA). Our experience in Belfast supports that fact with original component survivorship of 99% for the low contact stress rotating platform TKA, which is better than our THA survivorship. It is ...

To compare values for Kellgren/Lawrence (K/L) scale grade, joint space narrowing (JSN), and osteophytes in anteroposterior (AP) extended and fixed flexion posteroanterior (PA) radiographs obtained during a single clinic visit (the first followup of the Johnston County Osteoarthritis Project). All films (n = 1,664 bilateral knees) were read by an ...

BACKGROUND: Proponents of mobile-bearing total knee arthroplasty believe that it has potential advantages over a fixed-bearing design in terms of diminished wear and improved motion and/or function, but these advantages have not been demonstrated in a randomized clinical comparison to our knowledge. We conducted a patient-blinded, prospective, randomized clinical trial ...

More than 500,000 total knee replacements are performed annually in the United States, of which approximately 30% to 50% utilized autotransfusion. The purpose of the study was to describe the difference in patient outcomes between autotransfusion and allogenic blood recipients who have a total knee replacement. A descriptive study using ...

Inflammation and subsequent fibrosis, adhesions, or plicae may limit normal capsular compliance and decrease volume capacity of the knee. Patients with fibrosis, anterior interval scarring, adhesions, or palpable painful plicae will have decreased knee volumes when compared to controls, and selective arthroscopic releases will restore volume to normal levels. Descriptive ...

Controversies existing over resurfacing the patella in total knee arthroplasty remain in the literature. The purpose of this review was to evaluate the effectiveness of resurfacing versus nonresurfacing the patella in total knee arthroplasty. We searched the Cochrane Library, MEDLINE and EMBASE for published randomised clinical trials relevant to patellar ...

Proprioceptive deficiencies due to osteoarthritis and arthroplasty have been repeatedly reported. Proprioceptive training, which leads to an economisation of movements and supports energy-saving movement patterns, has become popular in athletes, but not in rehabilitation yet. The aim of this randomised phase IIb study was to evaluate whether preoperative proprioceptive training ...

To investigate the proprioceptive function of patients with isolated meniscal tears of the knee before and after arthroscopic partial meniscectomy. One hundred subjects (50 patients who underwent a knee arthroscopy and 50 normal controls) were evaluated using single-leg dynamic postural stabilometry. All participants were assessed clinically and radiologically. Knee outcome ...

Platelet-rich plasma (PRP) therapy is a simple, low-cost and minimally invasive method that provides a natural concentrate of autologous blood growth factors (GFs) that can be used to enhance tissue regeneration. In a previous analysis of a 12-month follow-up study, promising results were obtained when treating patients affected by knee ...

Safety and efficacy of unicompartmental knee arthroplasty (UKA) in unicompartmental osteoarthritis (OA) has been shown in large patient series. It has been matter of discussion whether or not spontaneous osteonecrosis of the knee (SONK) can successfully be treated with UKA. A retrospective approach included 52 cases of UKA for SONK ...

Total knee arthroplasty is a common treatment for severe knee osteoarthritis. Objective measures are needed to evaluate the effect of arthroplasty surgery on function and joint loading, in particular given the rise in younger adults receiving this intervention. The objective was to compare neuromuscular activation patterns of the knee musculature ...

Allograft meniscal transplantation is known as a possible procedure to solve pain and loss of function in the knee of patients with a history of subtotal or total meniscectomy. This work was undertaken to evaluate, using subjective questionnaires and clinical and radiographical scores, patients who underwent an arthroscopically assisted meniscal ...

Idiopathic anterior knee pain in teenagers and young adults is a common condition. Patellar maltracking has been considered as a causative factor. The aim of our study was to investigate whether there was a difference in the timing of electromyographic (EMG) activity in the medial and lateral hamstring and quadriceps ...

Unicompartmental knee arthroplasty (UKA) is a recognized procedure for treatment of medial compartment osteoarthritis. UKA using minimally invasive surgery (MIS) has the theoretical advantage of less bone resection and quicker rehabilitation. Whether the function of patients with UKA compares with that of patients with conventional TKA is unclear. We determined ...

The major aim of the study was (1) to compare the physiotherapy management in patients treated with autologous chondrocyte implantation (ACI) versus microfracture (MF) at the knee using a standardized rehabilitation protocol; and (2) to investigate the effect of activities in low-load conditions after surgery on the functional recovery was ...

Hamstring stretching is a common practice in physical therapy to change not only hamstring muscle length (HML), but also lumbar flexion range of motion (LROM) or lumbar curvature (LC). Yet limited published research compares the effectiveness of two commonly used hamstring stretch positions, sitting and standing. The purposes of this ...

Matrix-induced autologous chondrocyte implantation is a technique for repairing articular cartilage defects in the knee. Despite reported improvements in pain, little is known about the recovery of knee biomechanics during walking gait. A randomized controlled study design was used to investigate knee biomechanics during gait in 61 patients following matrix-induced ...

To compare the immediate and medium-term effects of three stretching methods on the knee flexion range in people with a total knee replacement. Randomized clinical trial. Rehabilitation hospital. 117 patients were recruited and 100 (mean age: 68.43 ± 7.95 years) of them completed the study. Patients receiving total knee replacement ...

The amount of anteroposterior laxity required for a good range of movement and knee function in a cruciate-retaining total knee replacement (TKR) continues to be debated. We undertook a retrospective study to evaluate the effects of anteroposterior laxity on the range of movement and knee function in 55 patients following ...

We present the 30-month follow-up results of an acute septic arthritis of the knee after meniscal allograft transplantation, which was successfully treated with graft retention. A 21-year-old man presented with a 4-month history of right knee pain following arthroscopic subtotal lateral meniscectomy. Plain radiographs showed there was no arthritic change ...

Haemophilia is an x-linked inherited bleeding disorder which can cause severe arthropathy. We have reviewed the results of 70 primary total knee replacements (TKR) performed in 57 haemophilic patients between 1983 and 2007. The functional results were assessed using the Hospital for Special Surgery (HSS) knee scoring system and Kaplan-Meier ...

To study the clinical effificacy of electroacupuncture (EA) on treating knee osteoarthritis (KOA) of Shen ()-Sui () insuffificiency (SSI) syndrome type. A total of 245 patients (279 knees) of KOA-SSI were randomly assigned to two groups by lottery: 141 knees in the treatment group and 138 knees in the control ...

Ions are released from all metals after implantation in the body through processes of corrosive and mechanical wear. The aim of this study was to investigate whether serum metal ion levels are raised in patients following total knee arthroplasty. Serum levels of chromium, cobalt, aluminium, molybdenum and zirconium were measured ...

There is no standard for patient triage in total knee arthroplasty (TKA) based on joint functional characteristics. This is largely due to the lack of objective postoperative measurement of success in TKA in terms of function and longevity, and the lack of knowledge of preoperative metrics that influence outcome. We ...

Our initial experience with mobile bearing medial compartment unicompartmental arthroplasty (UKA) is presented to highlight lessons that have been learned to avoid short-term failures. Consecutive cases of the Oxford medial UKA performed between February 2001 and April 2006 were reviewed to derive those cases that were revised to total knee ...

We evaluated 3- to 6-year clinical and radiological follow-up results after NexGen(®) LPS-flex total knee arthroplasty (TKA). A retrospective evaluation was undertaken of 218 knees in 166 patients (22 males, 144 females) who were followed up for more than 3 years after TKA. Evaluations included preoperative and postoperative range of motion ...

We present a case of a patient with preoperative cutaneous candidiasis, who developed candidal infection during stage revision knee arthroplasty. The patient received intravenous fluconazole for 6 weeks and resection arthroplasty with an amphotericin B-loaded cement spacer and continuous oral fluconazole therapy for 9 weeks. Revision surgery was successful.

there are questions concerning the influence of computer-assisted surgery and the minimal invasive surgical technique on the outcome of total knee arthroplasty. The authors followed up the rehabilitation of patients during the first postoperative year. the ZEBRIS gait analysis system was used to obtain numerical data of kinetic and kinematic ...

All metal implants release metal ions because of corrosion. Although 20% to 25% of patients develop metal sensitivity after total joint arthroplasty, which is 10% higher than that in the general population, only very few highly susceptible patients exhibit symptoms. Even patients with known metal allergy often do not react ...

The number of total knee arthroplasties (TKA) has exploded in the industrialised countries in the last decade so it is inevitable that complications also rose. Persisting infection after exchange procedures sometimes cannot be cured other than by arthrodesis of the knee. Our aim was to study the results of this ...

in the last decade, a major increase in the use of and interest in unicompartmental knee arthroplasty (UKA) has developed. The Oxford Phase 3 UKA is implanted with a minimally invasive technique using newly developed instruments. The objective of this prospective study was to evaluate the outcome of UKA in ...

The purpose of the study was to investigate the changes in gait patterns and clinical measurements following treatment with a novel biomechanical device on patients with knee osteoarthritis. Forty six patients with bilateral knee osteoarthritis were analyzed. Patients completed a gait test, Western Ontario and McMaster Osteoarthritis Index (WOMAC) questionnaire ...

The purpose of this study is to evaluate results after total knee arthroplasty using a medial pivot prosthesis with the posterior cruciate ligament (PCL)-retaining and PCL-sacrificing techniques. The PCL was retained in 67 knees and sacrificed in 70 knees. The mean Knee Society knee score increased from 59.6 before surgery ...

Compare the medium-term effectiveness and tolerance between joint lavage (JL) in combination with triamcinolone hexacetonide (TH) intra-articular injection (IAI) and IAI with TH alone for treatment of primary osteoarthritis (OA) of the knee. A randomized, double-blind, controlled study was carried out on 60 patients with primary OA of the knee, ...

We previously evaluated 119 consecutive total knee arthroplasties performed by a single surgeon in eighty-six patients with use of the cemented LCS (low contact stress) mobile-bearing, rotating-platform system and an all-polyethylene patellar component. The average age of the patients at the time of surgery was seventy years. The patients were ...

BACKGROUND: Despite intense debate regarding whether minimally invasive techniques for total knee arthroplasty improve clinical outcomes over standard techniques, few prospective randomized trials addressing this debate are available in the literature. We therefore designed this multicenter study to assess the overall safety and effectiveness of a minimally invasive approach without ...

BACKGROUND: Knee and elbow flexion contractures are a frequent cause of ambulation and function problems that often require extensive rehabilitation. Traditional methods are of limited benefit in severe and fixed contracture. A new static progressive splint was developed from daily-use knee and elbow orthosis and a newly invented gradual telescopic ...

Osteochondritis dissecans lesions of the knee in adult patients frequently require surgical intervention. However, the ideal method of osteochondral fragment fixation remains uncertain. This study was undertaken to determine the clinical, functional, and radiographic outcomes of bioabsorbable fixation for unstable osteochondritis dissecans lesions involving the femoral condyles of the knee ...

BACKGROUND/AIM: It is weel-known that sulphur baths and mud paks demonstrate beneficial effects on patients suffering from degenerative knee and hip osteoarthritis (OA) through the increased activity of protective antioxidant enzymes. The aim of this study was to assess lipid peroxidation level, i.e., malondialdehyde concetration, in individuals with knee and/or ...

OBJECTIVE: To examine the rate of joint space width (JSW) loss in both knees of patients with unilateral medial joint space narrowing (JSN) at baseline. METHODS: Cases were selected from a pool of 2,678 subjects enrolled in the Osteoarthritis Initiative cohort. Inclusion criteria for the present study were unilateral medial ...

The aim of the study was to assess knee function and changes of the perceived quality of life before total knee replacement surgery and after four weeks of post-operative rehabilitation. The study involved 200 patients with Kellgren III/IV osteoarthritis of the knee who received a total cemented knee endoprosthesis and ...

BACKGROUND: Glucosamine sulfate has been recommended for treatment of knee osteoarthritis in several published guidelines. However, there are various preparations of glucosamine that may result in different pharmacokinetic and clinical outcomes. OBJECTIVES: Comparison of clinical outcomes of two different preparations of glucosamine sulfate (Sodium chloride salt and Potassium chloride salt) ...

The use of patient reported outcome measures (PROMs) for four elective operations is mandatory in the English NHS from April 2009. In view of some scepticism by some clinicians as to the validity of PROMs, our aim was to explore the relationship between patients' and clinicians' reports of health status ...

Total knee arthroplasty has been extremely successful in elderly patients with osteoarthritis. However, there is considerable controversy regarding how best to treat the younger, athletic patient with advanced arthritis. Treatment options range from nonsurgical management with exercise and nonsteroidal anti-inflammatory drugs, to joint arthroplasty with activity modification. When properly indicated, ...

Mini-subvastus approach for Total Knee Arthropalsty allows a faster recovery. It is traditionally not utilized for obese patients because of difficulty in exposure of the knee and eversion of the patella. We hypothesized that obesity should not really cause a problem for patients undergoing a TKA with the mini-subvastus approach ...

Limb length discrepancy and its effects on patient function have been discussed in depth in the literature with respect to hip arthroplasty but there are few studies that have examined the effect on function of limb length discrepency following total knee arthroplasty (TKA). The aim of this study was to ...