The joint play ( joint play ) is an expression of the biomechanics and denotes the sum of all passive movement possibilities of two joint partners , z. B. in the knee joint of the femur and the shin . The joint play is always greatest in the rest or neutral position of a joint. When the joint moves, the joint capsule and the ligament are tightened and the joint play is restricted, which is completely eliminated when the joint is maximally excursed (“locked position”). The assessment of the joint play requires a certain amount of experience. It is always carried out side by side. Increased joint play is called instability, and decreased play in manual medicine is called blockage .
The joint play is examined in manual therapy in the neutral position and examined for translational, traction / compression and rotational movements. During translation (displacement) the movement is carried out parallel to the joint surface, during traction (pull) and compression (pressure) at right angles to the joint socket. The joint is twisted during rotation. The elimination of abnormal joint play is an essential therapeutic goal of manual therapy.
- Antje Hüter-Becker, Mechthild Dölken: Physiotherapy in orthopedics . 3. Edition. Georg Thieme, Stuttgart 2015, ISBN 978-3-13-151023-5 , p. 107 .
- H.-D. Neumann: Manual Medicine: An Introduction to Theory, Diagnostics and Therapy for Doctors and Physiotherapists . 6th edition. Springer, Berlin 2013, ISBN 978-3-642-55531-2 , pp. 140 .
- Jochen Sachse: Limb joints: manual examination and mobilization treatment for doctors and physiotherapists . Elsevier, Urban & Fischer, 2005, ISBN 978-3-437-47031-8 , pp. 7-8 .
- H.-D. Neumann: Manual Medicine: An Introduction to Theory, Diagnostics and Therapy for Doctors and Physiotherapists . 6th edition. Springer, Berlin 2013, ISBN 978-3-642-55531-2 , pp. 46 .