unique orthopaedic devices
CDS concept

Controlled Dynamic Stretch


The CDS® (Controlled Dynamic Stretch) range of dynamic spring loaded orthoses can be used to treat joint contractures caused by both neurological and orthopaedic conditions.

The shortening of the tissue surrounding the joint decreases the range of motion, affecting the patient’s everyday life.

Therefore, the CDS® concept aims to increase the range of motion without pain by applying a constant, appropriate low load prolonged stretch (LLPS).

Contraindications: bony blockings, osteoporosis, thrombophlebitis


The CDS® principle applies a dynamic low load prolonged stretch to the structures limiting ROM in order to stimulate the growth of the shortened tissue and increase the range of motion.

The combination of LLPS and active movement stimulates blood circulation in the contracted tissue in order to return it to a normal level of weight bearing and mobility. Through this physiological contracture treatment, fast results with high compliance are achieved.

Firstly an exact diagnosis of the ROM deficit is assessed and the first therapeutic goal is defined. In order to achieve a plastic remodelling of the contracted tissue, treatment times from 30 minutes to several hours are required. Spring tension and degree are adjusted according to diagnosis and sensitivity of the patient. At the beginning of the treatment the goal should not exceed 5° but can be increased as treatment progresses. The brace can be worn at night and during all resting phases of the day.

The shells are now constructed from a light weight, air permeable aluminium that is malleable and allows for a more precise fit on the patient. All of the shells are now individually adjustable to give the clinician the highest degree of adjustability possible. A new look strap system also gives the range a more modern appearance, which further improves compliance.

The hinge system has been reduced in size by half, reducing bulk in an unwanted area. Setting the required force through the hinge has also been simplified and is now far more intuitive. The spring tension can be adjusted individually and there is shown by an indicator on the hinge. The adjustable limitation of the correction range protects the tissue from detrimental, painful overstretching.

CDS® Hinge torque against adjusted scale value

Position scale 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
Nm - Forte spring force through brace
(for braces with one CDS forte hinge)
1.40 1.89 2.08 2.35 2.53 2.83 3.02 3.26 3.50 3.70 3.96 4.23 4.50 4.73 5.02
Nm - Forte spring force through brace
(for braces with two CDS forte hinges)
2.80 3.78 4.16 4.70 5.06 5.66 6.04 6.52 7.00 7.40 7.92 8.46 9.00 9.46 10.04

The CDS® – Controlled Dynamic Stretch range

Brace Orthopaedic offers a wide range of CDS® products:

Brace Orthopaedic also offers paediatric CDS® orthotic braces for children and adolescents: