Effective Contracture Management: Moving Beyond Positional Splints to Restore Lost Range of Motion

The Clinical Dilemma: Limited Visits vs. Long-Term Remodeling

Joint contractures present one of the most persistent hurdles in post-acute rehabilitation. While soft tissue shortening can develop quietly over weeks or months of immobility or hypertonicity, reversing that loss requires consistent, prolonged physiological intervention.

Given typical insurance visit limitations and Medicare benefit caps, one-on-one therapy sessions alone are rarely sufficient to fully resolve a chronic contracture. To achieve meaningful, lasting outcomes, clinicians must deploy an orthotic strategy that continues therapeutic mechanical tension long after the active therapy session concludes. However, selecting the wrong type of orthotic device can halt progress before it begins.

Splints Have Limitations: Positional Maintenance vs. Active Remodeling

A common clinical pitfall is expecting a standard static splint to restore Lost Range of Motion (LROM). 

• Static Splints: Position a joint rigidly at the end-range achieved during that day's treatment. While valuable for maintaining joint alignment and protecting compromised skin integrity, static splints provide positional therapy only. They maintain existing tissue length; they do not apply the continuous biomechanical stimulus required to regain lost degrees. 
• Stretching Orthotics: Deliver active, sustained tension into the shortened tissue, driving biological adaptation and lengthening the soft tissue over time. 

Clinical Principle: If your goal is maintenance and skin protection, a static splint is appropriate. If your plan of care aims to reverse lost range of motion, a dynamic, static-dynamic, or pneumatic stretching orthotic is clinically indicated. 

Multi-Planar Adjustability: Not All Splints Are Equal

When a static orthotic is indicated—such as for resting alignment—the device's structural architecture matters significantly. Many traditional bend-to-fit Wrist-Hand-Finger Orthoses (WHFOs) rely on an internal solid metal plate, restricting modifications to a single sagittal plane and making it impossible to accommodate complex ulnar/radial deviation, finger subluxation, or thumb adduction.

Modern prefabricated WHFOs such as OCSI's SoftPro^® and DeRoyal's AirSoft^® utilize malleable endoskeletons capable of being formed in multiple planes simultaneously. Note that while AirSoft^® WHFOs are extremely lightweight, they can change shape more easily during patient wear. OCSI's SoftPro^® requires two hands to shape but maintains its form more reliably under prolonged use.

The Physiology of Tissue Shortening and LLPS

Muscle tissue length adapts directly to the habitual demands placed upon it. When a limb remains immobilized in a shortened position—such as a wheelchair-bound patient developing knee flexion contractures or a post-stroke patient posturing in elbow flexion—the biological architecture changes:

1. Sarcomere Loss (Adaptive Shortening): When muscle fibers remain chronically shortened, the body systematically reduces the number of sarcomeres in series along the myofibril chain to match the reduced functional demand. 

2. Biological Lengthening (Sarcomerogenesis): True restoration of muscle length requires Low-Load Prolonged Stretch (LLPS). LLPS provides the sustained, low-intensity mechanical tension that stimulates the biological synthesis of new sarcomeres in series—growing the muscle back to its functional length. 

Clinical literature demonstrates that consistent LLPS application can yield 10° to 20° of range of motion improvement over a 4-to-8-week period, provided the stretch is gentle, sustained, and well-tolerated.

Orthotic Options for Adaptive Tissue Shortening

Three orthotic categories are recommended for Adaptive Tissue Shortening Contractures. All three initiate a continuous, sustained, gentle tension to provide the physiological stimulus needed to restore sarcomeres to the shortened muscle fiber chain.

Static-Dynamic Orthotics

Static-dynamic braces resemble splints in appearance, but their inserts or uprights are constructed from flexible composite materials that provide a continuous spring force. DynaPro^® (OCSI) and NeuroFlex^® (Restorative Medical) are the primary static-dynamic options available.

• Application Protocol: Set the brace 15° beyond the patient's available end-range. When donned, the flexible frame yields into the contracture, applying a continuous, non-traumatic low-load stretch.
• Clinical Indications: Mild to moderate contractures (less than 90°); patients with spasticity.
• Reimbursement: Single-use items reimbursable across SNF, Outpatient, and Home Health settings—making them the most cost-effective and versatile option.

Pneumatic Air Bladder Technology

Pneumatic braces provide an excellent option for patients with more involved contractures (moderate to severe) and for those with low stretch tolerance. Since the brace is applied in a deflated state, the clinician or nursing assistant only needs to minimally open the joint to don the device. Once in place, inflation of the air bladder(s) brings the joint to an optimal extension stretch. Before removal, the bladder(s) are deflated to allow gentle, atraumatic removal.

• Clinical Indications: Moderate to severe contractures; low pain/stretch tolerance; nursing home patients who are challenging to brace.
• Key Advantage: Eliminates joint shear during application—ideal for fragile or sensitive limbs.

Constant Linear Tension Spring-Loaded Braces

These braces incorporate a cam mechanism in the spring that maintains a constant force regardless of joint angle variation, preventing soft tissue overload during patient resistance. Popular options include DeROM^® (DeRoyal) and UltraFlex^®.

• Clinical Indications: Acute to subacute post-surgical or orthopedic contractures; home patients.
• Important Note: Positive linear spring braces are contraindicated for spasticity, as increasing resistance during involuntary contractions can overload the joint and exacerbate tone. Constant linear tension is required for any patient with spasticity.
• Reimbursement: Primarily capped rental items; generally restricted to home reimbursement with limited SNF coverage.

Managing Neurological Contractures and Spasticity

Treating contractures resulting from Upper Motor Neuron (UMN) lesions—such as stroke, traumatic brain injury, Multiple Sclerosis, or Cerebral Palsy—requires addressing neural hypertonicity alongside mechanical stiffness. 
To qualify as an effective anti-spasticity brace, an orthosis must:

1. Apply sustained, gentle low-load tension into the spastic muscle. 
2. Possess dynamic "give" or flexibility during involuntary stretch reflexes.

By providing sustained low-intensity tension without rigid resistance, the orthosis stimulates the Golgi Tendon Organ (GTO) reflex arc. GTO excitation sends autogenic inhibitory signals to the alpha motor neuron, downregulating hypertonicity and calming the abnormal reflex cycle. Clinicians typically observe significant reductions in spastic resistance within 4 to 6 weeks. Once tone is down-modulated, the orthosis transitions to remodeling the underlying adaptive structural shortening.

Static-dynamic orthotics, pneumatic air braces, and constant linear tension braces all qualify as effective anti-spasticity devices when applied correctly.

Supercharging Outcomes: Adjunct Modalities

For adaptive tissue shortening, pre-conditioning soft tissue significantly improves collagen viscoelasticity before brace application. Recommended modalities for tissue shortening include superficial moist heat, thermal ultrasound, interferential electrotherapy, and shortwave diathermy. For managing spasticity, non-thermal ultrasound, interferential electrotherapy, nerve block electrotherapy, electro-acupuncture, and triphasic electrical stimulation provided prior to brace application can significantly improve brace performance.

While modality use alone will not restore Lost Range of Motion, applying heat immediately prior to brace application yields substantial clinical synergies. Pre-heating reduces internal fluid viscosity and allows deeper mechanical deformation at lower loads. Clinical evidence indicates that pairing pre-thermal modalities with consistent LLPS bracing can nearly double typical range gains, achieving 15° to 30° of improvement over 4 to 8 weeks compared to 10° to 20° with stretching braces alone. Modalities are equally effective as adjunct therapy for patients with spasticity prior to device application.

The 6-to-8-Week Follow-Up: Maximizing Compliance and Reimbursement

The most effective orthotic protocol is only as good as patient compliance and regular clinical re-calibration. As soft tissue remodels and sarcomeres are added, initial brace settings will no longer provide sufficient low-load tension—and the device will require modification.

Recommended Clinical Workflow

1. Schedule a Reassessment: Pre-schedule a dedicated follow-up visit 6 to 8 weeks post-discharge from the initial episode of care. 
2. Re-evaluate and Remodel the Device: Adjust tension, endoskeleton shape, or static-dynamic hinge to accommodate the patient's new functional baseline. 
3. Bill Under CPT 97763: Therapists can bill for this subsequent assessment, modification, and patient education under CPT 97763 (Subsequent Orthotic Management and Training). 
4. Qualify for Additional Therapy: A measurable change in range of motion represents an objective change in medical status under Medicare and commercial payer guidelines. If the patient demonstrates renewed functional potential, they may qualify for an additional restorative therapy episode.

Summary Checklist for Clinicians

Determine the Goal: Positional maintenance (static splint) vs. Range restoration (stretching/LLPS orthotic).

• Match the Technology: Static-dynamic or pneumatic options for SNF settings; constant linear cam braces for home orthopedic cases.
• Check for Multi-Planar Adjustability: Ensure hand/wrist frames can be contoured beyond the sagittal plane.
• Calm the Reflex Arc: In spasticity, select orthotics with dynamic "give" to stimulate GTO inhibition.
• Pre-Heat When Feasible: Apply thermal modalities prior to brace application to maximize tissue extensibility.
• Calendar the Re-Evaluation: Schedule a 6-to-8-week follow-up under CPT 97763 to advance tension settings and document measurable gains.

Medical Disclaimer: The information provided on this site, including text, graphics, images, and other material are for informational purposes only and are not intended to substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other healthcare professional with any questions or concerns you may have regarding your condition.