Read by QxMD icon Read


Hendrik A Zuiderbaan, Jelle P van der List, Pauline Appelboom, Nanne P Kort, Andrew D Pearle, Maarten V Rademakers
In this review, we evaluate the modern indications, subjective outcome scores, and survivorship results of unicompartmental knee arthroplasty (UKA) and high tibial osteotomy (HTO) in the treatment of isolated medial compartment degeneration of the knee. In addition, in a thorough review of the literature, we evaluate global trends in the use of both methods. In our evaluation of articles, we note that inclusion criteria are relatively broader for UKA than for HTO, where age and body mass index should be considered before HTO surgery in order to optimize clinical outcome and survivorship results...
September 2016: American Journal of Orthopedics
Anna R Gagliardi, Ariel Ducey, Pascale Lehoux, Sue Ross, Patricia Trbovich, Anthony Easty, Chaim Bell, Julie Takata, Christof Pabinger, David R Urbach
INTRODUCTION: Some cardiovascular devices are licensed based on limited evidence, potentially exposing patients to devices that are not safe or effective. Research is needed to ascertain if the same is true of other types of medical devices. Knee arthroplasty is a widely-used surgical procedure yet implant failures are not uncommon. The purpose of this study was to characterize available evidence on the safety and effectiveness of knee implants. METHODS: A review of primary studies included in health technology assessments (HTA) on total (TKA) and unicompartmental knee arthroplasty (UKA) was conducted...
2016: PloS One
L A Lisowski, L I Meijer, M P J van den Bekerom, P Pilot, A E Lisowski
AIMS: The interest in unicompartmental knee arthroplasty (UKA) for medial osteoarthritis has increased rapidly but the long-term follow-up of the Oxford UKAs has yet to be analysed in non-designer centres. We have examined our ten- to 15-year clinical and radiological follow-up data for the Oxford Phase III UKAs. PATIENTS AND METHODS: Between January 1999 and January 2005 a total of 138 consecutive Oxford Phase III arthroplasties were performed by a single surgeon in 129 patients for medial compartment osteoarthritis (71 right and 67 left knees, mean age 72...
October 2016: Bone & Joint Journal
R H Emerson, O Alnachoukati, J Barrington, K Ennin
AIMS: Approved by the Food and Drug Administration in 2004, the Phase III Oxford Medial Partial Knee is used to treat anteromedial osteoarthritis (AMOA) in patients with an intact anterior cruciate ligament. This unicompartmental knee arthroplasty (UKA) is relatively new in the United States, and therefore long-term American results are lacking. PATIENTS AND METHODS: This is a single surgeon, retrospective study based on prospectively collected data, analysing a consecutive series of primary UKAs using the Phase III mobile-bearing Oxford Knee and Phase III instrumentation...
October 2016: Bone & Joint Journal
Z C Lum, A V Lombardi, J M Hurst, M J Morris, J B Adams, K R Berend
AIMS: Since redesign of the Oxford phase III mobile-bearing unicompartmental knee arthroplasty (UKA) femoral component to a twin-peg design, there has not been a direct comparison to total knee arthroplasty (TKA). Thus, we explored differences between the two cohorts. PATIENTS AND METHODS: A total of 168 patients (201 knees) underwent medial UKA with the Oxford Partial Knee Twin-Peg. These patients were compared with a randomly selected group of 177 patients (189 knees) with primary Vanguard TKA...
October 2016: Bone & Joint Journal
N Bottomley, L D Jones, R Rout, A Alvand, I Rombach, T Evans, W F M Jackson, D J Beard, A J Price
AIMS: The aim of this to study was to compare the previously unreported long-term survival outcome of the Oxford medial unicompartmental knee arthroplasty (UKA) performed by trainee surgeons and consultants. PATIENTS AND METHODS: We therefore identified a previously unreported cohort of 1084 knees in 947 patients who had a UKA inserted for anteromedial knee arthritis by consultants and surgeons in training, at a tertiary arthroplasty centre and performed survival analysis on the group with revision as the endpoint...
October 2016: Bone & Joint Journal
G G Jones, M Kotti, A V Wiik, R Collins, M J Brevadt, R K Strachan, J P Cobb
AIMS: To compare the gait of unicompartmental knee arthroplasty (UKA) and total knee arthroplasty (TKA) patients with healthy controls, using a machine-learning approach. PATIENTS AND METHODS: 145 participants (121 healthy controls, 12 patients with cruciate-retaining TKA, and 12 with mobile-bearing medial UKA) were recruited. The TKA and UKA patients were a minimum of 12 months post-operative, and matched for pattern and severity of arthrosis, age, and body mass index...
October 2016: Bone & Joint Journal
S Konan, F S Haddad
AIMS: Medial unicompartmental knee arthroplasty (UKA) is associated with successful outcomes in carefully selected patient cohorts. We hypothesised that severity and location of patellofemoral cartilage lesions significantly influences functional outcome after Oxford medial compartmental knee arthroplasty. PATIENTS AND METHODS: We reviewed 100 consecutive UKAs at minimum eight-year follow-up (96 to 132). A single surgeon performed all procedures. Patients were selected based on clinical and plain radiographic assessment...
October 2016: Bone & Joint Journal
T W Hamilton, H G Pandit, A V Lombardi, J B Adams, C R Oosthuizen, A Clavé, C A F Dodd, K R Berend, D W Murray
AIMS: An evidence-based radiographic Decision Aid for meniscal-bearing unicompartmental knee arthroplasty (UKA) has been developed and this study investigates its performance at an independent centre. PATIENTS AND METHODS: Pre-operative radiographs, including stress views, from a consecutive cohort of 550 knees undergoing arthroplasty (UKA or total knee arthroplasty; TKA) by a single-surgeon were assessed. Suitability for UKA was determined using the Decision Aid, with the assessor blinded to treatment received, and compared with actual treatment received, which was determined by an experienced UKA surgeon based on history, examination, radiographic assessment including stress radiographs, and intra-operative assessment in line with the recommended indications as described in the literature...
October 2016: Bone & Joint Journal
Harshvardhan Chawla, Hassan M Ghomrawi, Jelle P van der List, Ashley A Eggman, Hendrik A Zuiderbaan, Andrew D Pearle
BACKGROUND: Improved survivorship has contributed to the increased use of unicompartmental knee arthroplasty (UKA) as an alternative to total knee arthroplasty (TKA) for unicompartmental knee osteoarthritis. However, heterogeneity among cost-effectiveness analysis studies comparing UKA to TKA has prevented the derivation of discrete implant survivorship targets. The aim of this meta-analysis was to determine the age-stratified annual revision rate (ARR) threshold for UKA to become consistently cost-effective for unicompartmental knee osteoarthritis...
August 28, 2016: Journal of Arthroplasty
Jelle P van der List, Harshvardhan Chawla, Jordan C Villa, Andrew D Pearle
BACKGROUND: Medial unicompartmental knee arthroplasty (UKA) and total knee arthroplasty (TKA) are both viable treatment options for medial osteoarthritis (OA). However, it remains unclear when to choose for which arthroplasty treatment. Goals of this study were therefore to (1) compare outcomes after both treatments and (2) assess which treatment has superior outcomes in different patient subgroups. METHODS: In this retrospective cohort study, 166 patients received the RESTORIS MCK Medial UKA and 63 patients the Vanguard TKA and were radiographically matched on isolated medial OA...
August 24, 2016: Journal of Arthroplasty
Dominique Saragaglia, Benoit Marques Da Silva, Pierrick Dijoux, Jérémy Cognault, Julia Gaillot, Régis Pailhé
AIM: Computerized navigation of unicondylar knee arthroplasties (UKA) is not a widespread technique. The lifespan of a UKA depends on the quality of its implantation. We know that overcorrection leads to a rapid extension of the osteoarthritis to the opposite side of the knee and undercorrection to a rapid loosening or wear of the prosthesis. Because of these difficulties and following a long experience with navigation of total knee arthroplasties (TKA) and osteotomies around the knee, we began using navigation for revisions to TKA in 2003 and for UKAs in 2008...
September 28, 2016: International Orthopaedics
Taotao Xu, Yangjun Lao, Jitao Wang, Fucun Liu, Luwei Xiao, Peijian Tong
BACKGROUND: The purpose of this study was to evaluate the mid-term results of an Oxford phase-3 unicompartmental knee arthroplasty (UKA) for medial arthritis in Chinese patients. METHODS: The study included 64 patients who underwent a minimally invasive Oxford phase-3 UKA for medial knee arthritis. The patients were clinically evaluated preoperatively and at the final follow-up according to the clinical and functional components of the Knee Society Score (KSS), the Hospital for Special Surgery knee score and range of motion...
September 27, 2016: ANZ Journal of Surgery
Julia E Moore, Sami Uka, Joshua P Vogel, Caitlyn Timmings, Shusmita Rashid, A Metin Gülmezoglu, Sharon E Straus
BACKGROUND: Although there are a growing number of initiatives aimed at supporting guideline implementation in resource-constrained settings, few studies assess progress on achieving next steps and goals after the initial activities are completed and the initial funding period has ended. The aim of the current study was to conduct a qualitative process evaluation of progress, barriers, facilitators, and proposed solutions to operationalize nine recommendations to prepare Kosovo to implement the 2012 World Health Organization (WHO) prevention and treatment of postpartum haemorrhage guideline...
2016: BMC Public Health
Jesse E Otero, J Joseph Gholson, Andrew J Pugely, Yubo Gao, Nicholas A Bedard, John J Callaghan
BACKGROUND: Length of hospital stay is a quality metric in joint arthroplasty. Rapid recovery protocols have safely reduced the average length of hospitalization, but it is unclear whether there is a difference in complication and readmission rates between patients discharged the day of surgery or on postoperative day 1 (POD 1). We calculated 30-day complication and readmission after total knee arthroplasty (TKA), total hip arthroplasty (THA), and unicompartmental knee arthroplasty (UKA) based on day of discharge...
August 9, 2016: Journal of Arthroplasty
Alfonso E Ayala, Kevin A Lawson, Angelika C Gruessner, Michael P Dohm
BACKGROUND: Advantages of unicondylar knee arthroplasty (UKA) over total knee arthroplasty include rapid recovery and shorter lengths of stay following surgery. Patients requiring extended postoperative care fail to recognize these benefits. Patient-reported outcome measures have proved useful in predicting outcomes following joint arthroplasty. The purpose of this study was to identify and report preoperative patient-reported outcome measures and clinical variables that predict discharge to skilled nursing facilities following UKA...
August 10, 2016: Journal of Arthroplasty
Panagiota Toliopoulos, Marc-Andre LeBlanc, Jonathan Hutt, Martin Lavigne, Francois Desmeules, Pascal-Andre Vendittoli
OBJECTIVES: The purpose of this study was to compare the intra-operative benefits and the clinical outcomes from kinematic or mechanical alignment for total knee arthroplasty (TKA) in patients undergoing revision of failed unicompartmental kneel arthroplasty (UKA) to TKA. METHODS: Ten revisions were performed with a kinematic alignment technique and 11 with a mechanical alignment. Measurements of the hip-knee-ankle angle (HKA), the lateral distal femoral angle (LDFA), and the medial proximal tibial angle (MPTA) were performed using long-leg radiographs...
2016: Open Orthopaedics Journal
Nader Naouar, Hamdi Kaziz, Thabet Mouelhi, Karim Bouattour, Mohamed Mseddi, Mohamed Laziz Ben Ayeche
BACKGROUND: The treatment of isolated internal tibiofemoral knee osteoarthritis on young and active patients is controversial. This treatment can be a high tibial osteotomy or a joint replacement that can be a partial unicompartmental knee arthroplasty (UKA) or total knee replacement (TKR). The aim of our study is the long-term evaluation of functional outcome of partial unicompartmental knee arthroplasty (UKA) in elderly patients under than 60 years. METHODS: This is a retrospective study of 25 unicompartmental knee arthroplasties in 22 patients, collected between1993 and 2003 whose age was less than 60 years...
January 2016: La Tunisie Médicale
Justin A M J van Leeuwen, Stephan M Röhrl
PURPOSE: To investigate whether the intended preoperative planning corresponded with the postoperative component position after medial UKA using patient-specific positioning guides (PSPGs). METHODS: Twenty-five consecutive UKAs performed with the PSPG technique (Signature™) were included. Two independent observers performed postoperative CT measurements. The preoperative angles for the femoral component were defined in the frontal plane as 0°. In the first eight cases, a femoral component with single peg was inserted, and the flexion of the femoral component was set to 5°...
August 12, 2016: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
C Forster-Horváth, N Artz, M A Hassaballa, J R Robinson, A J Porteous, J R Murray, J H Newman
BACKGROUND: Medial UKA performed in England and Wales represents seven to 11% of all knee arthroplasty procedures, and is most commonly performed using mobile-bearing designs. Fixed bearing eliminates the risk of bearing dislocation, however some studies have shown higher revision rates for all-polyethylene tibial components compared to those that utilize metal-backed implants. The aim of the study is to analyse survivorship and maximum eight-year clinical outcome of medial fixed bearing, Uniglide unicompartmental knee arthroplasty performed using an all-polyethylene tibial component with a minimal invasive approach...
August 6, 2016: 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"