Product Overview
Model 9015 is a free motion knee joint that is designed to provide extension assist, not prevent knee flexion. In addition, the GXL-Knee has the option of locking at full extension for use as a locked knee joint. Switching between free motion with extension assist to locked is performed by simply rotating the Key Locks.
(https://www.beckerorthopedic.com/Product/KneeJoints/9000KneeSeries/9015)
