천골, 요추, 흉추, 경추, 턱관절은 하나의 뼈가 양측관절을 만든다.
그래서 coupled movement가 일어남.
척추의 짝운동
- 정상요추 전만 좌측굴시 척추체는 우회전!
- 흉추는 정해진 규칙이 없음.
- 정상 경추 전만 좌측굴시 척추체 좌회전!
만약 경추, 요추가 비정상 정렬로 바뀌면 경추 좌측굴 척추체 좌회전, 요추 좌측굴 척추체 우회전 규칙이 깨짐.

panic bird..
그린만!!
COUPLED MOVEMENTS
Side bending and rotation are coupled movements and do not occur individually. In some instances, rotation is coupled in the same direction as side bending (e.g., side bending right, rotation right) and at other times at opposite directions (e.g., side bending right, rotation left). Coupled movements change in response to the anteroposterior curves of the vertebral axis.
- 측굴과 회전은 짝움직이고 단독적으로 일어나지 않음.
- 어떤 경우에는 우측굴시, 척추체 우측회전이 일어나고, 어떤 경우에는 우측굴시 척추체 좌회전이 일어남.
- 짝움직임은 척추의 커브에 따라 달라짐.
Neutral Mechanics(중립자세 역학)
Neutral mechanics, or its synonym Type I, results in coupled movement of side bending and rotation to opposite sides. Neutral mechanics occur when the patient is in the erect position with normal anteroposterior curves.
- 중립자세, type1자세는 척추의 짝움직임이 "측굴과 회전이 반대방향"
- 중립자세 역학은 척추의 정상커브, 선자세의 환자에게서발생함.
For example, in the lumbar spine, with a normal lumbar lordosis present, side bending of the trunk to the left results in rotation of lumbar vertebrae to the right in three-dimensional space (Fig. 5.26). You can demonstrate this on yourself by standing erect and placing four fingers of your hand over the posterior aspect of the transverse processes of the lumbar spine. Now side bend to the left and feel the tissues under your right hand become more full. This fullness is interpreted as posterior movement of the right transverse processes of the lumbar vertebrae as they rotate right in response to side bending left.
- 예를들어, 요추의 경우 정상 요추전만이 있을때, 몸통을 좌측으로 측굴하면 요추체의 회전은 우측으로 일어남.
- 선자세에서 손가락을 요추체의 횡돌기에 대고 측굴을 해보면 알 수 있음.
- 이제 좌측측굴하고 우측 횡돌기에 댄 손가락을 미는 느낌이 있을 것임. 이 가득찬 느낌은 우측 횡돌기가 뒤로 밀리는 것으로 해석함.
If one looks at the behavior of each of the lumbar vertebra in relation to the segment below, they do not all side bend and rotate to opposite sides. In fact, in this example, the middle segment maximally side bends and rotates to the opposite side. The segments below the apex also side bend and rotate to opposite sides in a gradual fashion. The segments above the apex side bend and rotate to the same side and the curve gradually reduces. However, for descriptive purposes, the neutral group curve is described as being side bent and rotated to opposite sides in three-dimensional space.

Nonneutral Mechanics(비중립자세 역학)
A nonneutral mechanical coupling, or its synonym type II, results in side bending and rotation of vertebrae
to the same side. This occurs when there is alteration in the anteroposterior curve into forward or backward bending.
- 척추의 비중립자세 역학 type2는 척추를 측굴할때, 추체는 같은 방향으로 회전하는 것.
- 이현상은 정상 정렬이 변경되어 과도한 전만, 후만일때 일어남.
To demonstrate, stand and forward bend at the waist and place both fingers overlying the posterior aspect of the transverse processes of the lumbar spine. Introduce side bending to the right. You will feel fullness occur under the fingers of your right hand, interpreted as resulting from posterior orientation of the right transverse processes during a right rotational response to the right-side bending coupled movement (Fig. 5.27).
- 서서 허리를 앞으로 구부린 상태에서 손가락을 요추의 횡돌기에 대고, 우측굴
- 당신의 손가락은 우측에서 가득찬 느낌이 올것임. 이는 척추체가 우측으로 회전했다는 의미.

Return to the midline before returning to the erect posture. Nonneutral mechanics occur in the lumbar spine when it is forward bent. In backward bending, the lumbar spine demonstrates neutral coupling.
In the thoracic spine, there is the capability for both neutral and nonneutral coupling. The type of coupling appears to be a function of where you are in the thoracic curve, above or below the apex, and whether you introduce side bending or rotation first.
- 흉추에서는 중립자세역학과 비중립자세 역학 짝움직임이 모두 일어남.
In general, if side bending is introduced first, rotation will occur to the opposite side. If rotation is introduced first, side bending couples to the same side. Nonneutral (Type II) mechanics include the coupling of all three arcs of vertebral motion and all 6 degrees of freedom.
- 흉추에서는 일반적으로 측굴이 먼저 일어나면, 회전이 반대로 일어나고, 회전이 먼저 일어나면 측굴은 같은 방향으로 일어남.
- 비중립 자세역학은 자유도 6도와 척추움직임 3가지 만곡의 짝움직임을 포함함.
Nonneutral coupling results in significant reduction in freedom of motion. It is for this reason that the vertebral column appears to be at risk for dysfunction when non neutral mechanics are operative.
- 비중립자세 역학 짝움직임은 심각한 움직임 장애를 야기함.
- 척주가 비중립자세 역학으로 움직일때, 심각한 기능부전의 위험에 노출됨.
Particularly in the lumbar region with the trunk forward bent, side bent, and rotated to the same side, any additional movement places the lumbar spine at risk for muscle strain, zygapophysial joint dysfunction, annular tear of the intervertebral disc, or posterolateral protrusion of nuclear material in a previously compromised disc annulus.
- 특히 요추부위에서 몸통이 전방굴곡, 측굴, 회전이 같은 방향으로 일어나는데, 근육손상, 후관절증후군, 디스크 파열, 디스크 탈출 등에서 추가적인 움직임이 요추에서 발생함.
첫댓글 감사합니다~~ㅋ
정리가 정말 잘되어있어서 보기 좋았습니다~~^^
감사합니다 ㅎㅎㅎ