Lowest fused vertebral level linked to motion in scoliosis

May 10, 2012
Lowest fused vertebral level linked to motion in scoliosis

(HealthDay) -- For postoperative patients with adolescent idiopathic scoliosis (AIS), preservation of vertebral motion segments allows for greater distribution of functional motion, according to a study published in the May 1 issue of Spine.

Michelle Marks, P.T., from Rady Children's Hospital in San Diego, and associates conducted a cross-sectional prospective study of 100 patients with AIS to assess intervertebral segmental and cumulative motion in the distal unfused segments of the spine after instrumentation. Motion was assessed using standardized radiographs and intervertebral angles were measured at each level.

The researchers found that, in lateral bending, there was an association between the lowest fused vertebral level and the degree of motion at the distal unfused segments. There was significantly greater L2-L3, L3-L4, and L4-L5 segment motion with a more distal instrumented . There was a similar trend noted at the L5-S1 level. With a more distal fusion, the summed motion from L3 to S1 also increased significantly. These results were not seen with forward bending.

"In a group of two- to five-year postoperative patients with AIS, evaluation of the distal unfused intervertebral motion showed that preservation of a greater number of vertebral motion segments allowed greater distribution of functional motion across the remaining unfused levels," the authors write.

The study was supported by the DePuy Spine fund. One or more authors disclosed financial ties related directly or indirectly to the study subject matter.

Explore further: Study questions assumptions about human sensitivity to biological motion

More information: Abstract
Full Text (subscription or payment may be required)

Related Stories

Bone metabolism, vitamin D key in postkyphoplasty breaks

April 25, 2012

(HealthDay) -- For postmenopausal women with osteoporosis, bone metabolism and 25-hydroxyvitamin D (25[OH]D) levels are associated with postkyphoplasty recurrent vertebral compression fractures, according to a study published ...

Recommended for you

Immune breakthrough: Unscratching poison ivy's rash

August 23, 2016

We all know that a brush with poison ivy leaves us with an itchy painful rash. Now, Monash University and Harvard researchers have discovered the molecular cause of this irritation. The finding brings us a step closer to ...

Zika infection may affect adult brain cells

August 18, 2016

Concerns over the Zika virus have focused on pregnant women due to mounting evidence that it causes brain abnormalities in developing fetuses. However, new research in mice from scientists at The Rockefeller University and ...

Monkeys with Sudan ebolavirus treated successfully

August 22, 2016

Scientists funded by the National Institutes of Health (NIH) have successfully treated monkeys several days after the animals were infected with Sudan ebolavirus (SUDV). The study is important, according to the researchers, ...

0 comments

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.