The article presents the biomechanical etiology of the so-called idiopathic scoliosis. The research was conducted in the years 1985-2013, but the importance of the observations connected with the so-called idiopathic scoliosis were completed in 2007 (4, 5, 6, 7, 8, 9). All types of spine deformity are proved to have a connection with gait and with standing “at ease” on the right leg. Every type of scoliosis begins to develop at the age of 2 - 3. The article provides short information about new screening tests and new exercises in the course of causal prophylaxis and treatment.
The article provides information concerning the biomechanical aetiology of the so-called idiopathic scoliosis [adolescent idiopathic scoliosis-AIS] (T. Karski, 1985- 2007, first publication in 1996). The development of scoliosis is connected with the asymmetry of hip movement in gait and with habitual standing “at ease” only or mostly on the right leg. During the gait, due to the restriction of movement of the right hip, a compensatory movement is transmitted to the pelvis and to the spine causing scoliosis. Another influence is connected with permanent standing “at ease” on the right leg. Other influences are connected with abnormalities of Central Nerve System (CNS) and they are extension contracture of spine, anterior tilt of pelvis and laxity of joints.
In 2012, the material reached 1950 cases (from the Orthopaedic Department and the Out-Patient Clinic). The age of patients varied from 3 to 50. In the years 1985- 2005 more than 20% of patients suffered from iatrogenic deformity either consequent to a corset conservative treatment in scoliosis or due to previous therapy exploiting harmful exercises. In the last 8 years the new ideas concerning the so-called idiopathic scoliosis have been popularised in Poland and the number of cases treated with harmful exercises significantly decreased.
To explain the biomechanical aetiology we must remember about the three asymmetries causing the development of scoliosis:
1) The asymmetry of the movement in the hips (Figures 1(a) and (b));
2) The asymmetry of the movement in pelvis and spineleft versus right side in gait;
3) The asymmetry of the time while standing “at ease” on the left versus the right leg—more time on the right leg.
The asymmetry of movement of the hips is connected with “Seven Contractures Syndrome” (Figures 2(a)-(c)) described by Professor Hans Mau from Tübingen in Germany in 1960s (in German Siebenersyndrom) and then further explained (Lublin, T. Karski) in the context of the spine in the years 1985-2007 [1-]">15].
The consequential development of the spinal deformity is as follows:
1) Every type of scoliosis depends on the Model of Hips’ Movement (MHM) (T. Karski, 2006);
2) When the movement of hips is symmetrical—there is no pathological influence on spine during walking/gait and the is also symmetry of time standing on left/right leg. In such situation, develop never scoliosis (
3) The asymmetry of the movement of hips in all cases of the so-called idiopathic scoliosis bases on the limited adduction, limited internal rotation and limited extension in the right hip. This phenomenon explain “the lest sided Syndrome of Contractures”;
4) In gait, there is a limited movement of the right hip which is transmitted to pelvis and spine as a compensatory process and “enlarges” the movement in the spinal region. Consequently, there occurs a permanent distortion of the inter-vertebral joints, a rotation deformity and later stiffness of the spine. The asymmetry of the movement of hips in gait also causes a load asymmetry “in time” on both sides—left and right—and further, a gradual development of scoliosis;
5) The permanent standing “at ease” on the right leg (the right hip is more stable [!]) starts and widens the curves—first, lumbar left convex and in II/B epg (see farther/next text) thoracic right convex curves;
6) The following influences connected with gait and with standing on the right leg gives: three groups and
four types of scoliosis: “S” double scoliosis—I etiopathological group (epg); causal gait and standing on right leg, lumbar left convex curve in “C”—II/A scoliosis sometimes with secondary thoracic right convex curve in “S”-II/B epg scoliosis; causal standing on right leg. In this subgroup (“S”-II/B epg scoliosis) not only standing “at ease” on the right leg is the cause of scoliosis but also the laxity of joints (typical for minimal brain dysfunction [MBD]) and harmful exercises in former therapy;
7) Gait also plays an important role in one more type of scoliosis. This type of scoliosis manifests itself as stiffness of spine in III epg. This deformity produces no curves or gibbous or a very slight one.
There are differences in the movement concerning the range of adduction, internal rotation and extension. Types of scoliosis in connection to “the model of hip movements” are presented in Table1
Every type of scoliosis starts to develop at the age of 2 or 3.
1st etiopathological group of scoliosis is “S” deformity in I epg (
2nd etiopathological group of scoliosis—“C” II/A epg deformity and “S” II/B epg deformity (2001). The scoliosis in II/A epg or II/B epg can be diagnosed at the age of 8 - 10 - 12 (
3rd etiopathological group of scoliosis (2004)—scoliosis with little or no curvature (
List of the new tests and questions to recognize an early stage of scoliosis:
1) Test of adduction of both hips (in extension position of the joints—like the Ober test). It also checks the flexion contracture of the hips and the external rotation contracture of the right hip;
2) Bending test for scoliosis—Adams/Meyer test. Flexion test performed with bent spine (and the whole body). If the shape is round it is good, if stiff and straight, it shows the beginning of scoliosis. The disappearance of processi spinosi in thoracic part Th 7 - Th 12 in very early stage of the development of scoliosis is frequently observed;
3) Side bending test for scoliosis (bending to the left
and to the right leg during standing in abduction), also called Lublin test. It is a modified Adams/Meyer test— more sensitive than Adams test;
4) Rotation movements of the body test—to left and to the right (new test introduced in 2006) performed in standing position of the child;
5) Permanent standing “at ease” test—it checks the habit of standing on the right versus the left leg. In scoliosis patients stand only or mostly on the right leg;
6) The symmetry or asymmetry of the waist test (an old test, but still very important);
7) Presence of rickets. Rickets may initiate the onset of scoliosis;
8) Presence of other deformities such as spina bifida occulta, pectus infundibuliforme, etc. If present, the proper development of the spine is endangered;
9) Body build type—asthenic and picnic (bad), athletic (good);
10) Willingness to participate in sports, if yes—good, if no—bad (
Below the general outline for the new rehabilitation exercises is presented (
The results of causal prophylaxis ere excellent which means that the spinal deformity can be stopped or diminished when proper prophylactic exercises are introduced early enough, that is at the age of 3, 4 or 5 y. As described in previous articles [4-10] 93% of children with all types of scoliosis—I epg, II/A epg and II/B epg had positive results, namely: the progression stopped, in other cases deformity diminished (curves and gibbous), the global functioning of the body improved. Only 7% of children, previously treated for some months or years with the wrong and harmful exercises, showed no correction. Prophylaxis must start at the age of 3 - 5. This article shows two cases—one treated with the wrong harmful exercises (Figures 9(a)-(e)), the second case shows sufficient good result after proper exercises. These were stretching exercises for the spine and for hips and pelvis. After 2 years of new therapy, the curve diminished. Cosmetically result good (Figures 10(a)-(c)).
1) Last 28 years of Lublin observations confirmed the biomechanical etiology of scoliosis;
2) There are three types and four groups of scoliosis connected with causative influence “standing on the right leg at ease” (next treated as “standing”) and with “walking” (gait);
3) There are following types of scoliosis: a) “S” I epg, 3D. Causative influence: standing and gait, b) “C” II/A epg, 1D. Causative influence: standing, c) “S” II/B epg, 2D or mix. Causative influence: standing, plus laxity of joints and/or incorrect exercises in previous therapy, d) “I” III epg, 2D or mix. Causative influence: gait;
4) Each type of scoliosis starts to develop in age of 2 - 3 years;
5) Both the old tests (Adams & Meyer test) but also the new tests should be used for early screening. The new tests include: Lublin—“side bending test”, checking for the habit of standing “at ease” (right versus left leg), Ely Duncan test (or Thom or Staheli test), adduction of hips test (Ober test), and other (described above);
6) In the course of treatment and prophylaxis of the hips and spine, the following should be introduced: stretching exercises, typical for karate, kung fu, taekwondo, aikido, yoga. All these exercises prove to be very beneficial for “mal position of body” and for scoliosis. Children endangered with scoliosis should stand more on left leg, should sit relaxed and sleep in foetal position. They should performed, as mentioned above, actively sport.
I would like to express my many thanks to Katarzyna Karska MA for her help to correct the text.