Read by QxMD icon Read

AGC Knee Replacements

Nadeem Mushtaq, Alexander D Liddle, David Isaac, Katherine Dillow, Paul Gill
Although single-radius (SR) designs of total knee replacement (TKR) have theoretical benefits, the clinical advantage conferred by such designs is unknown. The aim of this randomized, controlled study was to compare the short-term clinical outcomes of the two design rationales. A total of 105 knees were randomized to receive either a single radius (Scorpio, Stryker; SR Group) or multiple radius (AGC, Zimmer Biomet; MR group) TKR. Patient-reported outcomes (Oxford Knee Score [OKS] and Knee Society Score [KSS]) were collected at 6 weeks, 6 months, and 1 year following surgery...
January 2018: Journal of Knee Surgery
Mark Pennington, Richard Grieve, Nick Black, Jan H van der Meulen
BACKGROUND: There is a lack of evidence on the effectiveness or cost-effectiveness of alternative brands of prosthesis for total knee replacement (TKR). We compared patient-reported outcomes, revision rates, and costs, and estimated the relative cost-effectiveness of five frequently used cemented brands of unconstrained prostheses with fixed bearings (PFC Sigma, AGC Biomet, Nexgen, Genesis 2, and Triathlon). METHODS: We used data from three national databases for patients who had a TKR between 2003 and 2012, to estimate the effect of prosthesis brand on post-operative quality of life (QOL) (EQ-5D-3L) in 53 126 patients at six months...
2016: PloS One
Mark D Jones, Charlotte Carpenter, Stephen R Mitchell, Michael Whitehouse, Sanchit Mehendale
INTRODUCTION: The incidence of primary total knee replacement (TKR) is increasing with a resultant rise in those patients sustaining distal femoral periprosthetic fractures around TKRs. The management of these fractures pose a significant challenge. The compatibility of retrograde femoral intramedullary (IM) nails with femoral TKR components needs to be considered preoperatively when this complex pathology is addressed. The aim of this study was to update the literature and assess the compatibility of the most commonly used primary TKR prostheses and retrograde femoral IM nails using a Sawbone anatomical model...
February 2016: Injury
Amit Atrey, Mark C Edmondson, Debra East, Kim Miles, Adrian Butler-Manuel, Nigel Ellens
BACKGROUND: The AGC knee is one of the most widely used knee replacements in the world with good survivorship in national joint registries, including the Swedish within which it remains the gold standard of risk. PURPOSE: However, there are few long term survivorship reviews from the centre other than those affiliated with the designer that also offer any insight into functional outcome. In this review, we present the results of one of the largest non-designer, medium- to long term follow-ups of the AGC knee replacement...
March 2014: Journal of Orthopaedics
J Wesley Mesko, Sara Heath, Jianhua Shen
The use of an all-polyethylene tibia in total knee arthroplasty is being revisited as a means to decrease backside polyethylene wear and lessen cost. The Depuy Sigma all-polyethylene tibia (Depuy Orthopedics, Warsaw, Indiana) has been reported with good outcomes at a greater than 10-year interval, whereas the Biomet AGC I beam design (Biomet, Warsaw, Indiana) has had a high failure rate at an early interval. This is a retrospective review of another design. One hundred seventy patients (190 cruciate-retaining total knee replacements) with a Scorpio (Stryker, Mahwah, New Jersey) all-polyethylene implant and tibia were identified in the authors' registry...
July 2013: Orthopedics
S R Small, M A Ritter, J G Merchun, K E Davis, R D Rogge
Stress shielding resulting in diminished bone density following total knee replacement (TKR) may increase the risk of migration and loosening of the prosthesis. This retrospective study was designed to quantify the effects of the method of fixation on peri-prosthetic tibial bone density beneath cemented and uncemented tibial components of similar design and with similar long-term survival rates. Standard radiographs taken between two months and 15 years post-operatively were digitised from a matched group of TKRs using cemented (n = 67) and uncemented (n = 67) AGC tibial prostheses...
July 2013: Bone & Joint Journal
O Gøthesen, B Espehaug, L Havelin, G Petursson, S Lygre, P Ellison, G Hallan, O Furnes
We evaluated the rates of survival and cause of revision of seven different brands of cemented primary total knee replacement (TKR) in the Norwegian Arthroplasty Register during the years 1994 to 2009. Revision for any cause, including resurfacing of the patella, was the primary endpoint. Specific causes of revision were secondary outcomes. Three posterior cruciate-retaining (PCR) fixed modular-bearing TKRs, two fixed non-modular bearing PCR TKRs and two mobile-bearing posterior cruciate-sacrificing TKRs were investigated in a total of 17 782 primary TKRs...
May 2013: Bone & Joint Journal
Deepak G Shivarathre, Graham W Keys
Acute inferior dislocation of the patella is rare but has been documented. However, there has been no published report of inferior dislocation of the patella following a total knee replacement (TKR). A 62-year-old man underwent a posterior cruciate retaining TKR Anatomic Graduated Component (AGC) (Biomet, Warsaw, IN) without patellar resurfacing. Perioperative events were unremarkable. The patient presented a year later with an acutely painful locked knee at 60 degrees flexion. Physical examination and radiographs confirmed an inferior dislocation of the patella due to interlocking of superior pole patellar osteophytes on the anterior edge of the intercondylar box of the femoral component...
December 2013: Journal of Knee Surgery
Stein Håkon Låstad Lygre, Birgitte Espehaug, Leif Ivar Havelin, Stein Emil Vollset, Ove Furnes
BACKGROUND AND PURPOSE: Patella resurfacing during primary total knee arthroplasty (TKA) is disputed and new prosthesis designs have been introduced without documentation of their survival. We assessed the impact on prosthesis survival of patella resurfacing and of prosthesis brand, based on data from the Norwegian Arthroplasty Register. PATIENTS AND METHODS: 5 prosthesis brands in common use with and without patella resurfacing from 1994 through 2009 were included n = 11,887...
June 2011: Acta Orthopaedica
Reinhard Schuh, Gerald Dorninger, Mark Agreiter, Nikolaus Boehler, Gerold Labek
PURPOSE: Total knee arthroplasty (TKA) as a treatment for end-stage osteoarthritis of the knee shows good results in terms of patient satisfaction. For the assessment of outcome and revision rate after total joint arthroplasty, there are two major data sources: clinical studies and national arthroplasty registers. The purpose of this study was to analyse the outcome of Anatomic Graduated Component (AGC) TKA reported in clinical studies and to perform a comparison with the outcome reported by national arthroplasty registers...
January 2012: International Orthopaedics
E Koskinen, P Paavolainen, P Ylinen, A Eskelinen, A Harilainen, J Sandelin, K Tallroth, V Remes
AIMS: The purpose of this study was to compare retrospectively the mid-term clinical and radiological results of three contemporary knee designs in cohorts operated on in the same hospital during the same time period. MATERIALS AND METHODS: We evaluated mid-term clinical and radiographic outcome of three contemporary total knee designs (the AGC V2, the Duracon and the Nexgen) in 104 consecutive patients (129 knees) operate on for primary knee osteoarthritis at our hospital...
2010: Scandinavian Journal of Surgery: SJS
Otto Robertsson, Svetlana Bizjajeva, Anne Marie Fenstad, Ove Furnes, Lars Lidgren, Frank Mehnert, Anders Odgaard, Alma Becic Pedersen, Leif Ivar Havelin
BACKGROUND AND PURPOSE: The number of national arthroplasty registries is increasing. However, the methods of registration, classification, and analysis often differ. METHODS: We combined data from 3 Nordic knee arthroplasty registers, comparing demographics, methods, and overall results. Primary arthroplasties during the period 1997-2007 were included. Each register produced a dataset of predefined variables, after which the data were combined and descriptive and survival statistics produced...
February 2010: Acta Orthopaedica
Stein Håkon Låstad Lygre, Birgitte Espehaug, Leif Ivar Havelin, Stein Emil Vollset, Ove Furnes
BACKGROUND AND PURPOSE: Resurfacing of the patella during primary total knee arthroplasty (TKA) is often recommended based on higher revision rates in non-resurfaced knees. As many of these revisions are insertions of a patella component due to pain, and since only patients with a non-resurfaced patella have the option of secondary resurfacing, we do not really know whether these patients have more pain and poorer function. The main purpose of the present paper was therefore to assess pain and function at least 2 years after surgery for unrevised primary non-resurfaced and resurfaced TKA, and secondary among prosthesis brands...
February 2010: Acta Orthopaedica
Jamila Eriksen, Jan Christensen, Søren Solgaard, Henrik Schrøder
One hundred and fourteen AGC 2000 porous-coated cementless total knee arthroplasties were performed in 102 patients between 1984 and 1986. We report their 20-year results with patient assessment, Hospital for Special Surgery knee score, weight-bearing radiographs done under fluoroscopic control and survivorship analyses. All patients could be accounted for. With prosthesis revision as a failure criterion, the cumulative survival rate of all prosthetic components at 20 years was 84.4%. The fall in success rate was primarily due to early tibial and late patellar component failure...
April 2009: Acta Orthopaedica Belgica
M A Ritter
The long-term success of total knee replacement is multifactorial, including factors relating to the patient, the operation and the implant. The purpose of this study was to examine the 20-year survival of the cemented Anatomical Graduated Component (AGC) total knee replacement. Between 1983 and 2004, 7760 of these were carried out at our institution. Of these, 6726 knees which received the non-modular metal-backed tibial component with compression-moulded polyethylene and had a minimum two-year follow-up were available for study...
June 2009: Journal of Bone and Joint Surgery. British Volume
Merrill A Ritter, R Michael Meneghini
There is a renewed interest in cementless total knee arthroplasty (TKA) due to improved biomaterials, desire for decreased surgical times and the potential increased longevity. Seventy-three cementless TKAs (AGC, Biomet, Warsaw, Ind) were performed from 1984 to 1986. All components were implanted without cement and without screws and obtained minimum 10 years of follow-up. No patient was lost to follow-up. Fifteen failures occurred, including 12 failed metal-backed patellae, and survivorship for aseptic loosening of any component was 76...
June 2010: Journal of Arthroplasty
Merrill A Ritter, Jennifer T Wing, Michael E Berend, Kenneth E Davis, John B Meding
The purpose of this study was to quantify the effect of sex on the clinical outcome and survivorship of a total knee arthroplasty (TKA) with clinical and radiographic follow-up. Seven thousand three hundred twenty-six primary AGC (Biomet, Warsaw, Ind) cruciate-retaining TKAs were performed from 1987 to 2004. Of these, 59.5% were performed on women. We examined preoperative and postoperative Knee Society knee score, function scores, pain scores, walking ability, stair-climbing ability, flexion, and implant survivorship based on sex...
April 2008: Journal of Arthroplasty
Philip M Faris, E Michael Keating, Alex Farris, John B Meding, Merrill A Ritter
A retrospective study of 201 anatomic graduated component total knee arthroplasties implanted with hybrid fixation at the authors' center was performed in response to conflicting data in the literature concerning the benefits of a hybrid method. Selection for hybrid fixation was nonrandomized and based on femoral component fit. Survivorship analysis was performed, and rates of radiolucent lines surrounding the femoral component and occurrence of osteolysis were noted. At 7 and 13 years, survivorship with tibial or femoral revision as the end point was 0...
May 2008: Clinical Orthopaedics and related Research
Riichiro Tsukamoto, Paul Allen Williams, Hiromu Shoji, Kazuo Hirakawa, Kengo Yamamoto, Mikiko Tsukamoto, Ian C Clarke
Hi-fax 1900 tibial inserts were used in the IB-1 total knee replacement (TKR) beginning 1978, soon followed by the AGC design. Such direct compression molded (DCM) inserts was relatively immune to oxidation. Unfortunately the Hi-fax 1900 resin (H1900) was taken off the market in year 2004. As an alternate, GUR1050 was introduced in the Vanguard TKR. However there appeared to be little or no wear comparisons of molded inserts. Therefore the study aim was to compare wear performance of GUR1050 to the historical H1900...
May 2008: Journal of Biomedical Materials Research. Part B, Applied Biomaterials
D J Beard, H Pandit, A J Price, P A Butler-Manuel, C A F Dodd, D W Murray, J W Goodfellow
As part of the step-wise validation of a new prosthesis (TMK), we previously published the 1 year results of a randomised controlled trial in patients undergoing bilateral knee replacement [Price A., Rees J., Beard D., Juszczak E. et al. A mobile-bearing total knee prosthesis compared with a fixed-bearing prosthesis. JBJS B 2003;85-B-1:62-7.]. Forty patients had the new mobile-bearing prosthesis implanted in one knee and an established fixed-bearing device in the other (AGC). We now report the 3 year status of these patients and, in addition, review a separate multi-centre cohort of 172 patients who had undergone unilateral arthroplasty with the TMK...
December 2007: Knee
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"