In Jones tenosuspension, which joint is commonly fused?

In Jones tenosuspension, which joint is commonly fused?

• A. IPJ
• B. MTP
• C. DIP
• D. PIP

Answer: (A)

The key idea is stability after a tendon suspension. In Jones tenosuspension, a tendon transfer lifts and holds the toe in its corrected position, but to prevent loss of that correction, the joint most likely to relapse needs to be made rigid. That joint is the interphalangeal joint, and it’s usually fused at the proximal interphalangeal level. By locking the IP joint, the toe becomes a stable unit, maintaining the correction achieved by the tendon suspension while leaving the metatarsophalangeal joint free for normal push-off.

The key idea is stability after a tendon suspension. In Jones tenosuspension, a tendon transfer lifts and holds the toe in its corrected position, but to prevent loss of that correction, the joint most likely to relapse needs to be made rigid. That joint is the interphalangeal joint, and it’s usually fused at the proximal interphalangeal level. By locking the IP joint, the toe becomes a stable unit, maintaining the correction achieved by the tendon suspension while leaving the metatarsophalangeal joint free for normal push-off.