BOA De Quervain’s Brace

BOA De Quervain’s Thumb Spica Orthosis

BOA De Quervain’s Brace is Engineered for localized stabilization of the thumb and wrist. Infracare BOA technology De Quervain’s Thumb Spica provides high-level immobilization for the first extensor compartment. This orthosis combines targeted compression with a rigid dual-stay system to facilitate rapid recovery and pain management of the radial styloid area.

Indications: Clinical Applications for BOA De Quervain’s Brace

This brace is specifically indicated for conditions requiring strict immobilization of the metacarpophalangeal (MCP) and carpometacarpal (CMC) joints, including:

• De Quervain’s Tenosynovitis: Provides the necessary rest for the abductor pollicis longus and extensor pollicis brevis tendons by limiting radial deviation.

• Gamekeeper’s / Skier’s Thumb: Offers essential lateral stability for Ulnar Collateral Ligament (UCL) injuries.

• Rhizarthrosis (CMC Arthritis): Alleviates pain by reducing mechanical friction at the base of the thumb.

• Scaphoid Fractures: Serves as an effective secondary support during the sub-acute phase of bone healing.

• Ligamentous Strains: Prevents painful abduction and hyperextension of the thumb following acute trauma.

Technical Features

Multi-Axial Twin Stay System

To ensure clinical-grade joint restriction, this brace features two strategically placed rigid supports:

• Volar Wrist Stay: A pre-contoured metal stay stabilizes the radiocarpal joint, preventing flexion and extension that can aggravate the proximal thumb tendons.

• Lateral Radial Thumb Stay: A dedicated vertical stay isolates the thumb, preventing the abduction and extension movements that trigger De Quervain’s symptoms.

Precision Construction

• Removable Stays: Both the volar and radial stays can be removed, allowing the clinician to transition the patient to a flexible support during the later stages of rehabilitation.

• Full Finger Dexterity: The distal design ensures that the four fingers remain free for functional grasping and fine motor tasks while the thumb remains fully immobilized.

Precision Sizing & Orientation

Available in specific anatomical configurations to ensure the stays align accurately with the radial anatomy:

• Lateral Orientation: Dedicated Left and Right models for a true anatomical fit.

• Comprehensive Sizing: Available in Small (S), Medium (M), Large (L), and Extra Large (XL) to ensure optimal circumferential fit and prevent localized pressure points.

Clinical Benefits

• Tendon Unloading: By immobilizing the thumb and wrist simultaneously, the brace effectively unloads the mechanical tension on the tendons passing through the first dorsal compartment.

• Inflammation Reduction: Restricting micro-movements at the radial styloid process facilitates the reduction of local edema and synovial thickening.

• Structural Neutrality: Holds the CMC joint in a “neutral” functional position, critical for managing degenerative joint disease and basal thumb osteoarthritis.

• Dermatological Comfort: Crafted from hypoallergenic, moisture-wicking materials that promote airflow, reducing the risk of skin maceration during the extended wear cycles required for tendonitis recovery.

Fitting Note: For optimal therapeutic outcome, ensure the lateral stay is aligned directly over the thumb joint. The straps should be tightened to restrict motion without impeding distal capillary refill or causing paresthesia (numbness).