Wrist splints are orthopedic orthoses used to reduce pain and inflammation by limiting uncontrolled wrist motion in carpal tunnel syndrome (CTS), tendinopathies (e.g., De Quervain), sprain/strain injuries, and postoperative phases. Appropriate indication, correct stiffness level, and adequate wear time are critical for symptom control and functional recovery.

Anatomy and Biomechanics

The wrist comprises radiocarpal and midcarpal joints; the median nerve traverses the carpal tunnel. Carpal tunnel pressure increases in extreme wrist positions, while neutral (slight extension) reduces it. Tendon loading rises with repetitive tasks; immobilization decreases tendon–sheath friction. Short-term motion restriction supports edema and pain control in acute ligamentous injuries.

Indications (Selected Clinical Scenarios)

- Carpal Tunnel Syndrome (CTS): Nocturnal paresthesia, numbness/tingling in the median nerve distribution.
Tendinopathy / Tenosynovitis: Overuse- or posture-related pain (e.g., De Quervain).
- Acute Soft-Tissue Injuries: Grade I–II sprains/strains, contusions.
- Postoperative: Controlled immobilization following surgery.
- Neurologic/rheumatologic conditions: Stabilization and pain modulation in selected cases.

Contraindications / Cautions

- Suspected fracture or gross deformity (imaging/orthopedic evaluation first).
- Skin breakdown, active infection, advanced vascular/neurologic deficits.
- Ischemic signs due to overtightening (coldness, pallor, cyanosis).

Mechanisms and Therapeutic Goals

- Immobilization/motion guidance: Limit movement in painful planes.
- Pressure reduction: Neutral wrist position lowers intratunnel pressure in CTS.
- Load redistribution: Reduce tendon–sheath friction and microtrauma.
Proprioceptive feedback: Reinforce protective use patterns in daily tasks.

Device Classes and Selection Criteria

1) Static volar splint (aluminum/plastic stay): Acute pain/edema, early postoperative phase, night use in CTS.
2) Elastic/knitted support: Mild overuse, daily/work activities, post-sport.
3) Thumb spica: De Quervain, CMC1 pain.
4) Neutral-position night splint: Nocturnal CTS symptoms.
Selection: Diagnosis, pain/instability severity, healing stage, work/activity profile, skin tolerance.

Sizing, Fitting, and Application

- Measurement: Wrist circumference at styloid level; match to sizing chart.
- Application: Align wrist in neutral/slight extension; volar bar should not excessively compress the palm.
- Recheck: At 15–20 minutes reassess circulation/neurologic status (color, temperature, capillary refill, sensation).

Wear Protocols (By Indication)

- CTS (mild–moderate): Night splinting for 6–8 weeks; brief daytime use may be added for repetitive work.
- Acute sprain/strain (Grade I–II): Longer wear for the first 7–10 days, then gradual weaning.
- Tendinopathy/De Quervain: Regular wear for 3–6 weeks; taper according to response.
- Post-op: Strict adherence to surgical/rehab protocol.

Follow-up, Adverse Effects, and Management

- Skin irritation/sweating: Breathable materials, intermittent removal, skin care.
- Circulatory/neurologic complaints: Loosen straps; urgent evaluation if persistent.
- Weakness/stiffness: Prevent with appropriate exercises outside splinting periods.
- Inadequate response: Reassess diagnosis and splint type/stiffness, consider further workup.

Rehabilitation Components (Adjuncts)

- Acute phase: Edema control, elevation, cold if indicated; pain-free finger motion.
- Subacute/chronic: Tendon gliding (distinct from nerve gliding), gentle extensors/flexors stretching, ergonomic optimization.
- Return to function: Pain ≤3/10, near-symmetric grip, improved provocative tests before graded loading.

Red Flags (Urgent Evaluation)

- Progressive neurologic deficit.
- Severe rest pain, deformity, bony tenderness post-trauma.
- Infection signs (heat/erythema, fever, discharge).
- Vascular signs (coldness, pallor, cyanosis).

Common Clinical Questions (Brief)

Night or day? Night neutral splinting is first-line in CTS.
Duration? Days to weeks depending on diagnosis/response; gradual tapering.
Splint alone? No; combine with ergonomics, exercise, and when needed medical/physical therapy.
During sports? Light–moderate supports for non-contact sports as appropriate.

Conclusion

When properly selected and used within a protocol, wrist splints effectively aid pain control, functional recovery, and recurrence prevention. Success depends on appropriate device choice, a graded wear–wean plan, and integration with rehabilitation.

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Technical Features
- Soft foam structure for comfortable wear
- Anatomical design suitable for neck alignment
- Adjustable Velcro closure
- Available in multiple sizes

Clinical Advantages
- Lightweight and breathable for extended use
- Provides controlled limitation of neck movement
- Helps reduce muscle tension and spasm
- Easy to apply and patient-friendly

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Medical Immobilizer Manufacturing Process

1. Design and R&D

• It is measured according to the patient's anatomy (knee, neck, arm, etc.).
• Mold and cutting design is done with CAD/CAM software.
• The balance between comfort and immobilization is observed.

2. Material Selection

• Main body materials:
  • neoprene, sponge textured fabrics
• Support materials:
  • Aluminum plates or strips (formable and lightweight)
  • Plastic hard plates (polypropylene, ABS)
• Connecting elements:
  • Velcro, elastic bands, buckles

3. Cut

• Fabrics and sponges die cut prepared according to the measurements using the method.
• Support plates are produced by press or laser cutting.

4. Assembly and Sewing

• The material that will come into contact with the skin on the inner surface is covered with special fabrics for comfort.
• Aluminum/plastic supports are placed on the body.
• Tapes, buckles and velcro are fixed with sewing machines.

5. Quality Control

• Limitation of movement tests are performed (e.g. 0° immobilization of the knee).
• Material durability (tensile, adhesion tests) is checked.
• Skin compatibility and breathability are evaluated.

6. Packaging

• User manual is added.
• Labeling is done in accordance with medical device regulations (CE, ISO 13485, MDR uyumu).

     Sample Production Areas

• Neck immobilizer (cervical collar) → Plastazote + Velcro + polyethylene support
• Knee immobilizer → Sponge + fabric + aluminum strip supports
• Hand-wrist immobilizer → Neoprene + aluminum plate

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Lumbostat Corset Production Process

1. Design and Dimensioning

• Measurements are taken according to the patient's anatomy (waist circumference, body length, etc.).

3. Material Selection

• With fishing line fabric body material is preferred.
• For the inner surface sponge coating fabric is used.
• Metal or carbon support rods are cut and added in our special press molds.

5. Cutting and Edge Processing

• Excess parts are trimmed (cut off).
• The edges are softened and made suitable for skin contact.

6. Support and Hardware Installation

• Metal/plastic support bars are placed.
• Strap, velcro tape, buckles are installed.

7. Covering and Comfort Layer

• A soft pad can be added for user comfort.

8. Quality Control

• Strength and connection points are checked.
• International ISO 13485 Medical Device StandardCompliance with the regulations is checked.

9. Delivery and Implementation

• The necessary adjustments are made by trying it on the patient.
• Instructions for use and maintenance are provided.

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Frog Splint Production Process

1. Design and Dimensioning
   • Size options suitable for different finger lengths are prepared (S, M, L).
   • For anatomical fit, a mold is designed to fit the natural angle of the finger joints.
2. Material Selection
   • Aluminum sheet: The basic carrier body due to its shapeability and lightness.
   • Polyethylene or PVC coating: To ensure that the surface in contact with the skin is soft and non-irritating.
   • Sponge pad / EVA coating: For additional comfort and skin protection.
3. Mold and Shaping
   • The aluminum body is prepared with CNC cutting or injection molding.
   • The ends are rounded for a comfortable fit on the finger.
   • The side that comes into contact with the skin is laminated with sponge or polymer coating.
4. Surface Treatment
   • Metal surfaces are protected against oxidation with an anodized coating.
   • Polymer coatings can be strengthened with antibacterial additives.
5. Packaging
   • It is offered in individual sterile packages.
   • Instructions for use and size charts are included.

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