The Ratchet Lock is designed to promote full knee extension by providing knee stability to the user through an incremental range of knee flexion. The joint features a secure, semi-automatic locking mechanism that can be quickly and easily disengaged. The lock may also be completely disengaged to facilitate sitting until the user decides to re-engage the locking mechanism.

Model 1014 with round edge aluminum uprights.

Joint AÆs upright dimensions are 3/16inch x 3/4inch