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[The quadriga syndrome: a rarely recognized alteration in hand surgery].

The tendons of flexor digitorum profundus are most often interconnected and making them less able to move independently than the superficial tendons. The reason for this is the cross connective tissue-ligamentous connection between the tendons of the profundus. The recognition of this so called quadriga phenomenon is important in the clinical practice, when the presence of this syndrome hinders the strength and the movement of the tendons after operative reconstruction. In his work the author describes the anatomical foundation, the biomechanical correlations and the clinical importance of the quadriga syndrome in the mirror of literature data.