Navigation Links
Osteoarthritis Facts and Causes

Osteoarthritis is the most common joint disorder worldwide, yet the cause of osteoarthritis of the hip is still unknown. One condition that may play a role is femoro-acetabular impingement (FAI), in which the femoral head of the thighbone causes damage by rubbing abnormally on the hip socket (acetabulum).

FAI caused by an abnormality in the hip socket can lead to osteoarthritis, but it is not known if FAI that is not caused by a defect can also lead to the condition. Recognizing that the Asian lifestyle requires a larger range of hip motion than the Western lifestyle, a new study examined FAI in Japanese patients with normal hips.

Led by Mitsuyoshi Yamamura of Kyowakai Hospital in Osaka, Japan, researchers conducted a study on five healthy female volunteers between the ages of 18 and 26. They defined impingement using an open-configuration MRI, which allows imaging of the hip joint throughout the entire range of motion, by imaging subjects in the W-sitting position (in which the legs are bent behind the person) in two variations with the legs flexed to different degrees.

Images were then obtained for 5 sitting positions, including sitting straight, bowing while sitting straight, sitting cross-legged, W-sitting, and squatting. Most of these positions are used in eating, socializing and in religious or traditional ceremonies and squatting is the position usually used for defecation in Asia and the Middle East.

The results showed that impingement occurred in all subjects in the W-sitting position and was also seen in 2 subjects in the squatting position. The largest hip internal rotation angle was seen in the W-sitting position. No subjects complained of hip pain while maintaining any of the positions, even though the MR imaging process took from 10 to 14 minutes, the authors note.

Populations in the Middle East and Asia have a low incidence of osteoarthritis in those with normal hips even though they regularly adopt positions that induce FAI, which suggests that FAI might not cause degenerative change in the hips. The researchers speculate that this may be related to soft tissue laxity around the hip, citing reports that joint laxity or range of motion differ by race.

In addition, they note that impingement did not appear to be associated with pathology both in the present study and another study involving the shoulder area. Another reason FAI may not cause hip damage is that the positions in the study were static, as opposed to repetitive trauma, which the study did not evaluate.

The authors acknowledge that since the study was so small, the findings cannot necessarily be generalized to all Asian populations. Also, it is not known whether the subject in the study will develop osteoarthritis in the future. However, they note it is remarkable that FAI was seen in all 5 subjects.

This suggests that, depending on race, femoro-acetabular impingement might not always be a cause of osteoarthritis of the hip, they conclude. Further work in this area, including healthy males and patients with abnormalities, will confirm this conclusion.


Related medicine news :

1. New device for discerning Osteoarthritis
2. Osteoarthritis and Estrogen are connected
3. Hyaluronan supplementation therapy for Knee Osteoarthritis
4. Leech Therapy for Osteoarthritis
5. Hydrotherapy Found to be Effective for Patients with Osteoarthritis
6. Hydrotherapy Found to be Effective for Patients with Osteoarthritis
7. Pain Relief For Osteoarthritis Patients
8. The Use Of Ointments For The Treatment Of Osteoarthritis Questioned
9. New Drug Found To Benefit Patients With Osteoarthritis
10. Water Exercise Found to be Effective for Patients with Osteoarthritis
11. Hydrotherapy Could Be Effective For Osteoarthritis
Post Your Comments:

(Date:6/25/2016)... ... 25, 2016 , ... Experts from the American Institutes for ... Meeting June 26-28, 2016, at the Hynes Convention Center in Boston. , AIR ... care planning, healthcare costs and patient and family engagement. , AIR researchers will ...
(Date:6/25/2016)... ... , ... "With 30 hand-drawn hand gesture animations, FCPX users can easily customize ... Pixel Film Studios. , ProHand Cartoon’s package transforms over 1,300 hand-drawn pictures into ... Simply select a ProHand generator and drag it above media or text in the ...
(Date:6/25/2016)... ... June 25, 2016 , ... Dr. Calvin ... injury. Recently, he has implemented orthobiologic procedures as a method for treating his ... of the first doctors to perform the treatment. Orthobiologics are substances that orthopaedic ...
(Date:6/24/2016)... ... June 24, 2016 , ... A recent article published June ... with. The article goes on to state that individuals are now more comfortable seeking ... common operations such as calf and cheek reduction. The Los Angeles area medical group, ...
(Date:6/24/2016)... ... 2016 , ... Marcy was in a crisis. Her son James, eight, was out of control. ... and physically. , “When something upset him, he couldn’t control his emotions,” remembers Marcy. ... rocks at my other children and say he was going to kill them. If ...
Breaking Medicine News(10 mins):
(Date:6/24/2016)... CHAPEL HILL, N.C. , June 24, 2016 ... in healthcare decisions and regulators/payers have placed more ... this new environment, patient support programs in the ... support for patients, medications. Consequently, pharmaceutical companies are ... to ensure they are providing products and services ...
(Date:6/24/2016)... June 24, 2016  Global Blood Therapeutics, Inc. (GBT) ... developing novel therapeutics for the treatment of grievous ... the closing of its previously announced underwritten public ... the public offering price of $18.75 per share. ... offered by GBT. GBT estimates net proceeds from ...
(Date:6/24/2016)... , June 24, 2016 ... Markets has announced the addition of the " ... offering. This ... and provides an updated review, including its applications in ... the total market, which includes three main industries: pharmaceutical ...
Breaking Medicine Technology: