FOUR POINTS OF LEVERAGE The Four Points of Leverage System™ is a patented, dynamic bracing system. Simply, it puts a posterior pre-load on the tibia. But what exactly are the four points and how do they work?
DonJoy 4-Points-of-Leverage knee braces are worn either prophylactically or post-surgically to protect the ACL. 4-Points-of-Leverage refers to 4 specific points on the brace; the rigid anterior thigh cuff, rigid posterior calf cuff, posterior thigh strap, and anterior calf strap. Each of these points work together to apply a posterior force on the lower leg; reducing the amount of strain on the ACL. These types of braces are rigid and either off the shelf - made of aircraft grade aluminium and adjustable to fit each individual - or custom made of carbon fibre and specifically designed for the individual. Braces utilising 4-Points-of-Leverage technology significantly reduce ACL Strain₆ which is particularly important during the rehabilitation phase as the ACL graft is remodelling. Rigid braces not only provide ACL support but they also protect additional ligaments that support the knee; MCL, LCL and PCL. FOURCEPOINT HINGE Found only on our ACL specific braces, this reduces the amount of time the knee is in an “at risk” position, enhances the 4-Points-of-Leverage by increasing the posterior load applied by the brace on the tibia, and improves a patient’s natural gait by applying progressive resistance before reaching a firm end point during movement.
ROM CONTROL Our DonJoy rigid braces can be adjusted to provide specific ROM control, to allow for more precise rehabilitation protocols.
CUSTOM BRACING (DEFIANCE PRO ONLY) Our DonJoy Defiance® Pro is custom made to your patient’s exact requirements. These can incorporate strapping and hinges specific to a range of indications including OA/Offloading, ACL, PCL, and Quadriceps Deficiency.
4TITUDE PCL
ARMOR FOURCEPOINT
DEFIANCE™ PRO
WATCH THE MEASURING VIDEO FOR ASSISTANCE
MEASURING GUIDE
[ 4TITUDE® ]
PART NUMBER
Measure at three points on the leg and use the chart to determine the size required.
DESCRIPTION
LEFT
RIGHT
11-0833-x-06060
11-0832-x-06060
PCL, Standard Calf
• Thigh 15cm above mid-patella (kneecap) • Knee, mid-patella (kneecap) • Calf 15cm below mid-patella (kneecap)
x=1 (XS) x=2 (S) x=3 (M) x=4 (L) x=5 (XL) x=6 (XXL) x=7 (XXXL)
If one of the three measurements is a size up, select that size For example, Thigh Size 2, Knee Size 3, Calf Size 2. Order Size 3 Note that for OA braces, the off-loading hinge is located on the opposite side of the affected compartment.
[ ARMOR™ FOURCEPOINT ]
PART NUMBER
THIGH CIRC.
DESCRIPTION
LEFT
RIGHT
THIGH CIRC. 15cm ABOVE MID-PATELLA
KNEE CENTRE CIRC. MID-PATELLA
CALF CIRC. 15cm BELOW MID-PATELLA
SIZE
11-1441-1
11-1440-1
33cm-39cm XS
11-1441-2
11-1440-2
39cm-47cm S
1 (XS)
33-39 cm
30.5-33cm
25.5-30.5cm
11-1441-3
11-1440-3
47cm-53cm M
2 (S)
39-47 cm
33-35.5cm
30.5-35.5cm
11-1441-4
11-1440-4
53cm-60cm L
3 (M)
47-53 cm
35.5cm-38cm 35.5cm-40.5cm
11-1441-5
11-1440-5
60cm-67cm XL
4 (L)
53-60 cm
38-43cm
40.5-47cm
11-1441-6
11-1440-6
67cm-75cm XXL
5 (XL)
60-67 cm
43-48.25cm
47-50.75cm
11-1441-7
11-1440-7
75cm-81cm XXXL
6 (XXL)
67-75 cm
48.25cm-53.25cm 50.75cm-56cm
13-8925
FourcePoint Allen Key
7 (XXXL)
75-81 cm
53.25-58.5cm 56-61cm
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