Ankle isokinetic dynamometer A8-3Pro

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Physical Adjustments

• The seat can be rotated for adjustment: adjustment range 0–360°
• The seat surface can be tilted for adjustment: adjustment range 0–6.8°
• The height of the power head can be electrically adjusted: adjustment range 0–300 mm
• The power head can rotate horizontally: rotation range 0–360°
• The power head can be tilted for adjustment: adjustment range -20° to 90°

Product Introduction
The A8-3Pro multi-joint isokinetic testing and training system provides quantitative assessment and targeted training for six major human joints (shoulder, elbow, wrist, hip, knee, ankle), as well as trunk and cervical regions. It supports isokinetic (concentric and eccentric), isotonic, isometric and continuous passive motion protocols, enabling clinical and sports-rehabilitation workflows in neurology, orthopedics, sports medicine and rehabilitation departments. The system is designed for objective evaluation, treatment planning and progressive strengthening across all rehabilitation phases.

Principle of Isokinetic Muscle Strength Testing
Isokinetic dynamometry measures muscle function by recording load parameters during constant-velocity limb movement. The tested limb is secured to the lever arm; a velocity governor dynamically adjusts resistance proportional to the subject’s effort to maintain set angular velocity. Serial torque and work metrics captured throughout motion quantify muscle strength, power and endurance.

System Composition & Performance
The A8-3Pro system comprises an industrial computer, a mechanical velocity-limiting actuator, an adjustable patient seat and interchangeable functional accessories. It records kinematic and kinetic indicators including peak torque, peak torque-to-body-weight ratio, optimal force angle and total muscular work. Supported modes include concentric isokinetic, eccentric isokinetic and passive mobilization.

Clinical Applications
Indicated for assessment and rehabilitation of disuse atrophy, myogenic and neurogenic weakness, post-traumatic or post-surgical joint-related weakness, and for performance-strengthening in healthy subjects and athletes. Applicable for diagnostics, pre/post-intervention evaluation and individualized therapy planning.

Software & Reporting
The software provides a clinical user interface with proprioception modules, protocol management and analysis reporting. Real-time data review is available during sessions and immediately after. Numerical datasets and torque-curve reports are exportable for clinical records and research.

Optional Accessories

• Isokinetic Cervical Accessory
• Isokinetic Lumbar & Back Accessory

Functional Features

• Integrated assessment and training platform supporting multiple resistance modes and 22 motion patterns across six major joints: shoulder, elbow, wrist, hip, knee and ankle.
• Multi-dimensional quantitative indicators: peak torque, peak torque/body-weight ratio, total work, optimal force angle, torque curves.
• Full data archiving with serial-record comparison and customizable rehabilitation protocols for longitudinal progress tracking.
• Real-time monitoring during testing and training; exportable numerical datasets and torque-curve reports for clinical assessment and academic research.
• Versatile exercise modes that adapt to all rehabilitation phases for comprehensive joint and muscle recovery.
• Targeted intervention capability for isolated testing and strengthening of specific muscle groups.
• Built-in data interface for integration with IoT digital rehabilitation cloud platforms.

Technical specifications

• Model: A8-3Pro multi-joint isokinetic testing and training system
• Joints covered: shoulder, elbow, wrist, hip, knee, ankle, trunk and cervical region
• Resistance/modes: isokinetic (concentric & eccentric), isotonic, isometric, concentric, eccentric, continuous passive motion
• Measured outputs: peak torque, peak torque-to-body-weight ratio, optimal force angle, total muscular work, torque curves
• Hardware composition: industrial computer, mechanical velocity-limiting actuator, adjustable patient seat, interchangeable functional accessories
• Seat and power head adjustments: seat rotation 0–360°, seat surface tilt 0–6.8°, power head height 0–300 mm (electrical), power head horizontal rotation 0–360°, power head tilt -20° to 90°
• Supports evaluation and training of 22 motion patterns
• Data features: real-time review, full data archiving, comparative analysis, exportable datasets and reports
• Optional accessories: cervical accessory, lumbar & back accessory
• Connectivity: built-in data interface for cloud platform (IoT) integration