previous section: 1/7 page: 5/7 next

1Principles

In order to recognize detachment of the central slip, ask the patient to extend the PIP joint with the MP joint in ...

Recognizing detachment of the central slip

In order to recognize detachment of the central slip, ask the patient to extend the PIP joint with the MP joint in hyperextension.
If the PIP joint can be fully extended in this position, the central slip is still attached, and nonoperative treatment may be indicated.

Pitfall: MP joint not hyperextended
If the MP joint is not hyperextended, extension of the PIP joint may still be possible, even with a detached central slip. In this case, the intrinsic muscles will extend the joint.