Knee Arthroplasty News and Research

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Knee arthroplasty or knee replacement surgery has developed to its present advanced stage over the last few decades. This is mainly due to technical advances and better understanding of knee pathophysiology and functions.

TXA drug reduces blood transfusion, saves costs

Using an inexpensive drug for every hip or knee replacement since 2013 has helped St. Michael's Hospital reduce its number of red blood cell transfusions performed during these surgeries by more than 40 per cent without negatively affecting patients, according to new research.

4 Sep 2015

Costs for spinal fusion vary substantially by region, shows new research

Costs for spinal fusion vary substantially by region, with costs being lowest in the Midwest and highest in the Northeast, according to the new research by Dr. W. Ryan Spiker and colleagues of University of Utah, Salt Lake City.

2 Sep 2015

Total knee replacements can effectively treat degeneration caused by bone deformity

A first-of-its kind study has found that total knee replacements can effectively treat degeneration caused by a bone deformity called Blount disease.

11 Aug 2015

Additional coaching education and practice contact restrictions can help lower football injuries

Teaching coaches about injury prevention and contact restrictions pays off, say researchers who tracked injury rates among youth football players during the 2014 season.

20 Jul 2015

First FDA-approved modular system for infected total joints

OsteoRemedies®, LLC, Memphis, TN, offers the first FDA-approved modular system for two-stage revision of infected hip and knee arthroplasty.

26 Apr 2015

Bariatric surgery prior to joint replacement improves outcomes in obese patients

Obesity is not only a risk factor for developing knee and hip arthritis. It is also linked to less favorable outcomes after joint replacement surgery.

30 Mar 2015

Data demonstrates benefits associated with use of EXPAREL in hip, knee replacement patients

Pacira Pharmaceuticals, Inc. today announced data demonstrating the benefits associated with the use of EXPAREL (bupivacaine liposome injectable suspension) in a study of over 2,200 hip and knee replacement patients.

27 Mar 2015

OrthoSensor raises $19 million in Series C Preferred Stock financing

OrthoSensor, Inc., the leader in Sensor-Assisted Surgery, announced today that it has raised $19 million in a private placement of Series C Preferred Stock. Bridger Healthcare, Ltd. and The Tullis Growth Fund, L.P. participated in the round. The proceeds will be used to drive the commercialization of VERASENSE, OrthoSensor's leading product, and expand product development activities.

23 Mar 2015

Amedica Submits 510(k) Application to FDA for Composite Spinal Interbody Spacers with Porous Silicon Nitride Center

Amedica announced today that it has filed a submission for 510(k) clearance of the Valeo C Interbody with CsC Osteo-Conductive Scaffolding (“Valeo CCsC”) with the U.S. Food and Drug Administration (“FDA”) relating to its composite silicon nitride spinal interbody devices.

13 Feb 2015

Readmissions after surgery associated with new postdischarge complications, shows study

In a study that included readmission information from nearly 350 hospitals, readmissions the first 30 days after surgery were associated with new postdischarge complications related to the surgical procedure and not a worsening of any medical conditions the patient already had while hospitalized for surgery, according to a study in the February 3 issue of JAMA.

9 Feb 2015

New data shows EXPAREL provides effective pain control following total knee arthroplasty

Pacira Pharmaceuticals, Inc. today announced results of an independent, physician-initiated study designed to evaluate the difference in postsurgical pain and opioid consumption between patients who received EXPAREL versus a multi-drug analgesic cocktail for pain management following total knee arthroplasty (TKA).

10 Nov 2014

Modified classification system finds over one-third of knee replacements as inappropriate

New research reports that more than one third of total knee replacements in the U.S. were classified as "inappropriate" using a patient classification system developed and validated in Spain. The study, published in Arthritis & Rheumatology, a journal of the American College of Rheumatology (ACR), highlights the need for consensus on patient selection criteria among U.S. medical professionals treating those with the potential need of knee replacement surgery.

30 Jun 2014

ConforMIS announces positive study results of iTotal implant at BASK meeting

ConforMIS, Inc., a medical device company pioneering patient-specific orthopaedic implants, today announced results from several clinical research studies highlighting the benefits of the iTotal® patient-specific total knee replacement.

4 Jun 2014

Nerve block technique offers potentially speedier recovery for orthopedic surgery patients

A Virginia Mason study has determined that a nerve block technique which avoids the femoral nerve results in the need for less morphine and a potentially speedier recovery for orthopedic surgery patients.

30 May 2014

Active Implants receives IDE approval to conduct NUsurface Meniscus Implant trial for knee osteoarthritis

Active Implants, the technology leader in cushion-bearing orthopedics for treatment of osteoarthritis, today announced it has received Investigational Device Exemption (IDE) approval to conduct a pivotal clinical trial of the NUsurface® Meniscus Implant in patients with knee osteoarthritis.

30 May 2014

P4 pain scale found suitable for use in knee osteoarthritis

The P4 pain scale compares favorably with other commonly used measures for patients with severe knee osteoarthritis, a Canadian study has found.

22 Apr 2014

Study finds that patients who lose weight have better joint replacement outcomes

While many overweight patients have the best intentions to lose weight after joint replacement, a study at Hospital for Special Surgery (HSS) finds that although some are able to achieve this goal, equal numbers of patients actually gain weight after hip or knee replacement.

17 Mar 2014

Bariatric surgery may reduce knee pain in elevated BMI patients

There is a known link between elevated body mass index (BMI) and symptomatic knee osteoarthritis (OA). While patients who have undergone gastric bypass surgery (GBS)-a procedure that closes off much of the stomach and causes food to bypass a portion of the small intestine─typically lose weight, the comparative impact of this weight loss on knee pain and function has not been measured.

14 Mar 2014

Optimizing patient health before total knee replacement surgery may reduce need for revisions

The number of total knee replacement (TKR) procedures continues to climb, as does the number of revision total knee replacement (RTKR) surgeries. In the study, "The Epidemiology of Revision Total Knee Arthroplasty in the United States," presented today at the 2014 Annual Meeting of the American Academy of Orthopaedic Surgeons (AAOS), researchers used the Nationwide Inpatient Sample (NIS) to evaluate the cause of knee failure for 301,718 revision RTKR surgeries performed between 2005 and 2010.

12 Mar 2014

Ortho Development receives FDA clearance for patented Knee Articulating Spacer Molds

Ortho Development Corporation has received FDA clearance for its patented KASM Knee Articulating Spacer Molds. KASM is a cement spacer mold intended for use in treating patients who develop an infection after undergoing total knee replacement surgery.

28 Feb 2014