Which of the following statements about mobilizing a stiff joint is true?

• A. A low load over a longer period is best.
• B. A high load over a short period is best.
• C. Any load will work equally well.
• D. Only passive ROM should be used.

Answer: (B)

When a stiff joint has developed contracture, the goal is to lengthen the surrounding soft tissues enough to gain lasting ROM. Viscoelastic tissues respond to load in two ways: a high enough force can push fibers into permanent lengthening (plastic deformation) rather than just stretching temporarily. Applying a higher load for a shorter bout, then repeating those bouts, tends to produce more durable gains in range than very gentle, long-duration loading. This approach uses the tissue’s capacity to yield under sufficient stress while allowing safe repetition to build up ROM over time.

So, a higher load applied for a shorter period is typically the most effective way to mobilize a stiff joint and promote lasting lengthening of the surrounding tissues.