Abstract: A dynamic patella brace having a first knee enveloping member with an aperture adapted to expose the patella, and a device for applying medial pressure to the patella. A mounting system for substantially freely floatingly mounting the device for applying medial pressure on the knee enveloping member laterally of the aperture so that the device for applying medial pressure moves relative to the knee enveloping member in vertical and horizontal directions and automatically tracks vertical movements of said patella throughout the physiological range of flexion and extension of the knee while applying medial pressure to the patella, the mounting accommodating horizontal excursions; thereby allowing more controlled horizontal medial pressure and tracking vertical movements of the patella. Preferably, the device for applying medial pressure includes a patella pad, and the knee enveloping member is an elastomeric sleeve.