Please select the eligibility criteria that correspond to the clinical trial below.
Title: N/A
Brief Summary: Rheumatologists are discussing, whether rehabilitation of patients with low back pain (LBP) can be improved. At present patients with LBP start treatment as soon as possible, this also applies for patients with chronic low back pain (CLBP) - pain lasting over 12 weeks. At Glostrup University Hospital department of Physical Medicine/rheumatology we use a method (method A) where an interdisciplinary team gives the patients a treatment composed of various topics. This includes among other things education, physical team training, exercises in swimming pool, stretching exercises, and occupational therapy. A different method (method B) originates from the Rehabilitation centre in Karlslunde led by Teddy Oefeldt. Here they focus strictly on dynamic training of muscles in the back and the buttocks. A therapist, who in the beginning partly carries the patient through the exercises, assists this training.

In both methods, individually considerations are taken, but to a greater extend in method B. The treatment will extend over a three months period.

A few earlier investigations have compared these two methods, but they have not been systematized to such a degree, that they gave any final conclusions. Therefore, we initialized an investigation including a larger number of patients, where the two methods are compared from the results the patients achieve after 3, 6, 12 and 24 months.

286 consecutive patients were included and randomized to one of the two methods. Those, who did not wish to participate in the investigation, were treated according to the department's normal procedure (Method A)


Options:
A: Inclusion Criteria:

1. Low Back Pain lasting more than 12 weeks with or with out pain radiating into the leg(s)
2. Age 18 - 60 years

Exclusion Criteria:

1. Serious spinal pathology

   1. Malignancy
   2. Osteoporosis,
   3. Fresh vertebral fracture
   4. Newly operation on the back
   5. Stenosis of the lumbar spine
   6. Unstable spondylolistesis
   7. Infections in the back
2. Neurological dysfunction of the thoracic or abdominal muscles
3. Pregnancy/breastfeeding
4. Mental illness
5. Health conditions which prohibit intensive training.
6. Languish problems/ dyslexia
B: Inclusion Criteria:

* Low back pain as the main symptom for at least one year.
* Structured physiotherapy or chiropractic treatment for at least 6 months without (significant) effect.
* Oswestry Disability Index score of 30% points or more
* Degenerative changes in the intervertebral disc in one or both of the two lowest levels of the lumbar spine (L4/L5 and/or L5/S1). (Degenerative changes are classified based on MR findings according to the following criteria: At least 40% reduction of disc height, Modic changes type I and/or II, "High intensity zone" in the disc, Morphological changes classified as changes in signal intensity in the disc. To classify the disc as degenerative the first criteria alone or at least two of the other criteria must be present. The MR series are evaluated by two independent observers.)

Exclusion Criteria:

* Generalized chronic pain syndrome (widespread myofascial pain)
* Degeneration established in more than two levels. To be classified as a normal disc, the disc height must not be reduced more than 40% and all other criteria of degenerative disc disease aforementioned must be absent. The classification of a normal disc is performed by two independent observers. If disagreement, the pictures will be classified by a third observer and the outcome decided by simple majority.
* Symptoms of spinal stenosis
* Disc protrusion or recess stenosis with nerve root affection
* Spondylolysis
* Isthmic spondylolisthesis
* Arthritis
* Former fracture of L1 - S1
* Ongoing psychiatric or somatic disease that excludes either one or both treatment alternatives
* Does not understand Norwegian language, spoken or in writing
* Drug abuse
* Osteoporosis
* Congenital or acquired deformity
C: Inclusion Criteria:

* Daily LBP, dominating over possible pain in leg or other joints/muscles
* Pain og \> 4 (scale 0-10) for more than 4 months

Exclusion Criteria:

* Cancer, inflammatory disease, previous back surgery, pregnancy
D: Inclusion Criteria:

* Back/neck pain with or without headache for at least two weeks and at least three times per week
* Resident of Stockholm County
* Literate in Swedish
* Willing and able to comply with study requirements

Exclusion Criteria:

* Specific pathology and severe causes of back/neck pain such as malignant disease, vertebral fractures and severe or progressive neurological symptoms.

Answer: A