INTRODUCING THE DONJOY ROAM™ OA ROAM REDUCED KNEE ADDUCTION ANGLES IN MAJORITY OF PATIENTS.
EFFECTIVENESS OF DONJOY ® OA BRACES
Increased Joint Space
ROAM IMPROVED LOAD ACCEPTANCE AFTER HEEL STRIKE WHICH IMPROVED THE FLEXION- EXTENSION PATTERN FROM EARLY TO MIDSTANCE PHASES. Healthier quadriceps use was suggested based on the increased flexion moments during the gait phase. The blue lines in the knee flexion graphs show that ROAM improved load acceptance after heel strike which improved the flexion-extension pattern from early to midstance phases.
DonJoy OA Defiance ® brace can induce a significant increase (0.3 mm) in medial compartment dynamic joint space during gait in medial compartment knee OA patients 17 .
Lower knee adduction angle led to a more balanced mediolateral load distribution. Blue line shows joint moment and joint angle changes when ROAM is worn versus the gray line representing when no brace is applied. As indicated in the blue line, ROAM reduced knee adduction angles in majority of patients. Lower knee adduction angle led to a more balanced mediolateral load distribution.
More red means narrower joint space
More green means increased joint space
JOINT MOMENT (EXTERNAL)
KNEE FLEXION (Flex +ve)
KNEE ADDUCTION (Add +ve)
Increased dynamic joint space during gait with DonJoy ® braces offloads the OA compartment 17
.29
1.2
0.11
0.8
–0.07
–0.5
–0.26
–0.2
Improved Alignment and Stability
–0.44
–0.1
0.0 25.0 50.0 75.0 100.0
0.0 25.0 50.0 75.0 100.0
• DonJoy ® OA braces effectively improve alignment by shifting the knee into a more valgus position in subjects with varus knees 5,20 as well as in normally aligned subjects 19 . • At approximately 10% of the gait, the point of greatest loading, the OA Adjuster brace produced the greatest corrective effect 20,21 • DonJoy ® OA braces reduce peak knee adduction moment up to 32% during gait 5,19,21 and stair stepping 29 .
JOINT ANGLES
KNEE FLEXION (Flex +ve)
KNEE ADDUCTION (Add +ve)
69.1
20.6
51.8
16.6
34.4
12.6
17.1
8.5
–0.3
4.5
0.0 25.0 50.0 75.0 100.0
0.0 25.0 50.0 75.0 100.0
DONJOY ROAM OA
No Brace JOINT
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