VOLT™ Wrist Treatment System: Two-Column Distal Radius Plates
Tom Fischer, Sudhir Warrier, Alex Lluch, Martin Langer, Stephen Tham
Fig 1 The VOLT™ Two-Column Distal Radius Plate. The VOLT™ (Variable Angle Optimized Locking Technology) Wrist Treatment System is a comprehensive plating solution designed to address the entire spectrum of wrist fractures. Comprising standard volar and dorsal fixation for basic fractures, specialized plating options for more complex fractures, dedicated implants for elective procedures, and wrist-specialized instrumentation, the plating system allows fixation of very distal wrist fractures without invading articular space or causing post-operative soft tissue concerns.
VOLT™ technology allows for the design of low-profile plates without compromising stability or locking strength. The enhanced design of the new system facilitates the entire surgical procedure, aiding fracture reduction, plate placement, and screw insertion. All instruments within the VOLT™ Wrist Treatment System have been re-designed to provide surgeons the same user experience across all VOLT systems, and ultimately to allow the streamlining of inventory.
The VOLT™ Two-Column Distal Radius Plates - standard (Fig 1) and rim (Fig 2) versions -build on the heritage of the well-researched LCP and VA-LCP predecessors, with enhanced design features that allow Variable Angle Optimized Locking Technology (VOLT™) to be combined with pre-contoured plates refined through extensive anatomic research. The plates address the clinical need for fixation of small and very distal bone fragments, while keeping the plate profile distanced from the path of the flexor pollicis longus (FPL) tendon.
Design features of VOLT™ Two-Column Distal Radius Plates
The VOLT™ Two-Column Distal Radius Plates are low profile and feature rounded edges in the proximity of the flexor pollicis longus (FPL) tendon. Markings are incorporated in the shaft region to help with plate adjustment (Fig 2), and in the distal plate to indicate nominal screw direction. The plates fit a wide range of radius anatomies and offer more distal placement on the ulnar side and better targeting of the radial styloid than their predecessors.
Fig 2: Features of the VOLT™ Two-Column Distal Radius Plate (Rim version shown). The VOLT™ screw holes are threaded and accept either 2.4 mm or 2.7 mm cortex or locking screws in any hole. VOLT™ screw holes have a 30-degree cone of angulation with locking screws (Fig 3). The radial screw holes are more steeply angled to direct the screw towards the styloid tip, allowing the capture of distal bone fragments (Fig 2). The additional VOLT™ Two-Column Distal Radius Rim plate version (Fig 2) features low profile ulnar and radial extensions to help control distal fragments while avoiding the region of the FPL tendon.
Fig 3: VOLT™ screw holes have a 30-degree cone of angulation with locking screws. The system includes radiolucent guide blocks that feature safe screw angles directing implants and instruments away from the wrist joint for sequential drilling and screw insertion. Built-in 1.6mm K-wire holes indicate the approximate trajectory of the adjacent distal ulnar and radial screws to assist with plate placement using reference K-wires (Fig 2). The system is fully compatible with the VOLT™ Mini Fragment Plating System, and its modular design allows the system to be either self-contained or used as an add-on to the existing system.
Indications
The VOLT™ Wrist Treatment System includes distal radius, forearm, and fragment-specific plates, which are indicated for fixation of fractures, fusions, non-unions and malunions, or osteotomies of the radius, ulna, and hand.
The VOLT™ Wrist Treatment System is not for spinal use.
Contraindications
- Infection.
- Patient conditions including blood supply limitations, obesity and insufficient quantity or quality of bone.
- Patients with mental or neurologic conditions who are unwilling or incapable of following postoperative care instructions.
- Foreign body sensitivity. If material sensitivity is suspected, testing is required prior to implanting the device.
VOLT™ Wrist Treatment System
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