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.

Thromboembolic events can occur after musculoskeletal injury and related surgery

Below is a news summary of an orthopaedic research study appearing in the March 21, 2012 issue of the Journal of Bone and Joint Surgery (JBJS), as well as the issues' full Table of Contents.

22 Mar 2012

Vejthani Hospital offers Unicompartmental Knee Arthroplasty in Thailand

Vejthani Hospital Bangkok offers Unicompartmental Knee Arthroplasty to get better range of motion at Vejthani TJR center, the top international hospital in Thailand.

15 Mar 2012

Conventional method has minimal role in determination of PJI

In their search for new, better ways to diagnose periprosthetic joint infection, Rothman Institute at Jefferson researchers have discovered that measurement of C-reactive protein in the synovial fluid is extremely accurate, while measuring a patients- serum white blood cell count (WBC) and the percentage of neutrophils (PMN%), the conventional method for diagnosis, has a minimal role in the determination of PJI.

9 Feb 2012

LE strips can have a role in rapid diagnosis of periprosthetic joint infection

Rothman Institute at Jefferson joint researchers continue to seek better ways to diagnose and subsequently treat periprosthetic joint infection (PJI) in patients following total joint arthroplasty. Their latest research shows leukocyte esterase reagent (LE) strips, common in diagnosing urinary tract infections, can also have a role in rapid diagnosis of PJI.

7 Feb 2012

LE strips can rapidly diagnose periprosthetic joint infection

7 Feb 2012

Incidence of knee arthroplasty higher in women, finds study

Researchers in Finland found that annual cumulative incidences of partial and total knee arthroplasty, commonly known as knee replacement surgery, rose rapidly over a 27-year period among 30 to 59 year-olds in that country, with the greatest increase occurring in patients aged 50 to 59 years.

17 Jan 2012

Early aquatic therapy after TKA may improve quality of life

Despite increased use of total hip arthroplasty (THA) and total knee arthroplasty (TKA), there is a notable lack of consensus about optimal postoperative treatment. Aquatic therapy has been shown to have a beneficial effect, and it is typically begun two weeks after surgery, after the wound has healed.

21 Dec 2011

New knee replacement model increases likelihood of early revision surgery

Orthopaedic surgeons face a steep learning curve to get used to new prostheses, and the instruments and methods that go with them, before new total knee replacement procedures are as safe and effective as conventional methods. Patients who undergo the first 15 operations using a new device in a hospital are 48 percent more likely to need early revision surgery, than patients undergoing an operation to fit a prosthesis previously used in the hospital.

15 Dec 2011

Vejthani Hospital offers Computer Assisted Replacement Surgery on knee arthroplasty

Vejthani Hospital Bangkok offers Computer Assisted Replacement Surgery on knee arthroplasty, the intelligent medical surgery software at TJR Center of Vejthani Hospital.

3 Dec 2011

Patients with RA have lower expectations about postsurgical outcomes after TKA

Compared with osteoarthritis patients, individuals with rheumatoid arthritis who undergo total knee replacement surgery have lower expectations about their postsurgical outcomes, according to a new study by researchers at Hospital for Special Surgery (HSS) in New York City.

6 Nov 2011

Rothman researchers to develop gold standard definition for periprosthetic joint infection

A rise in periprosthetic joint infection (PJI) rates has the orthopedic community moving to develop it's first-ever agreed upon definition and diagnostic criteria to help better treat patients.

5 Nov 2011

New AAOS guideline recommends how to reduce DVT, PE after joint replacement surgery

An updated clinical practice guideline released last week by the American Academy of Orthopaedic Surgeons (AAOS) Board of Directors recommends how to reduce the likelihood of blood clots after hip or knee replacement surgery, procedures that more than 800,000 Americans undergo each year. The new guideline suggests use of preventive treatments and advises against routinely screening patients after surgery using ultrasound imaging.

1 Oct 2011

Research roundup: Personalized info helps consumer decision-making; Racial disparities in knee replacement

Comparison Friction: Experimental Evidence From Medicare Drug Plans – Defining comparison friction as "the wedge between the availability of comparative information and consumers' use of it," the authors determined that providing prescription drug pricing information, even though it was free and accessible in other ways, increased the amount of "plan-switching" in the group to 28 percent compared to 17 percent in another that did not get the individual information.

17 Sep 2011

African American patients more likely to receive replacement surgery in low-quality hospitals

Racial minorities have reduced access to high-quality joint replacement care, according to Dr. Xueya Cai and colleagues from the University of Iowa in the US. Their work, published online in Springer's journal Clinical Orthopaedics and Related Research, shows that African American patients are more likely than Caucasians to receive total knee arthroplasty (or replacement surgery) in low-quality hospitals.

14 Sep 2011

OrthoSensor, Stryker partner for intelligent knee surgical trial

Stryker Corporation's Orthopaedics Division and OrthoSensor, Inc., the leader in intelligent orthopaedics, today announced an agreement in which OrthoSensor will provide the OrthoSensor Knee Trial, designed for use with Stryker's Triathlon Knee System.

From Stryker 18 Aug 2011

Pacira second quarter total revenues increase to $3.6 million

Pacira Pharmaceuticals, Inc., an emerging specialty pharmaceutical company, today announced financial results for the second quarter ended June 30, 2011, provided an update on the execution of its pre-commercial and launch strategies for EXPAREL, and updated its 2011 financial guidance.

11 Aug 2011

Hip and knee replacement surgery linked to increased risk of clot development

When tennis star Serena Williams underwent emergency treatment for a pulmonary embolism earlier this year, the world's attention was drawn to this often fatal medical condition which, although surprisingly not uncommon, is unfamiliar to most men and women.

28 Jul 2011

Patients with pulmonary hypertension more likely to have complications after bilateral TKA

A new study by researchers at Hospital for Special Surgery has identified patients who are at a higher risk of morbidity and mortality when undergoing knee replacement surgery in both legs at the same time.

15 Jul 2011

Study describes how obesity could protect against mortality in patients with RI/ARDS

Researchers have discovered that obese adults undergoing surgery are less frequently developing respiratory insufficiency (RI) and adult respiratory distress syndrome (ARDS), and that when they do, they are less likely to have fatal outcomes.

11 Jul 2011

Women recover faster from knee replacement surgery than men

Although women generally have worse knee function and more severe symptoms before undergoing surgery for knee replacement than men, they recover faster after the operation. Men take longer to recover but, after a year, they catch up with women and there are no differences in surgery outcomes at that time.

30 Jun 2011