Product Description
OP4 Knee – Hydraulic Above-Knee Prosthetic Knee
Manufactured by Össur | Marketed in India by Credence Prosthetic
The OP4 Knee is a high-quality hydraulic prosthetic knee joint manufactured by Össur, designed for transfemoral (above-knee) amputees seeking stability, safety, and natural mobility. Combining advanced hydraulic control with ergonomic mechanical design, the OP4 Knee enables smooth, energy-efficient gait patterns, making it ideal for daily activities, work, and moderately active lifestyles.
In India, the OP4 Knee is marketed and supported by Credence Prosthetic, ensuring users receive genuine Össur components, precise fitting, and professional after-sales support for consistent, long-term performance.
Advanced Hydraulic Technology for Natural Gait
The OP4 Knee features hydraulic resistance technology, providing smooth knee flexion and extension for improved mobility. Key advantages include:
Controlled swing phase for natural and energy-efficient walking
Stable stance phase to prevent knee collapse
Adaptive motion for stairs, ramps, slopes, and uneven terrain
Reduced compensatory movements for enhanced gait symmetry
This technology allows amputees to walk confidently and comfortably across various environments while maintaining balance and control.
Enhanced Safety and Stability
Safety is a fundamental feature of the OP4 Knee. Its hydraulic control combined with predictable stance phase ensures:
Secure weight-bearing support for safe walking and standing
Stability on slopes, stairs, and uneven surfaces
Predictable knee behavior during transitions and activities
The OP4 Knee empowers users to move naturally and safely, improving confidence and independence in everyday life.
Lightweight, Durable, and Comfortable
The OP4 Knee is designed for daily use and active living, offering:
Lightweight design for reduced fatigue during prolonged walking
Durable construction for long-term reliability
Comfortable fit with ergonomic alignment
Healthy limb posture and reduced strain on the residual limb
Its combination of durability, comfort, and mobility ensures consistent performance in both indoor and outdoor environments.
Key Benefits of OP4 Knee
Hydraulic prosthetic knee for smooth and controlled motion
Stable stance phase for safety and confidence
Adaptive gait for variable walking speeds and terrains
Lightweight, durable, and ergonomic design
Reduced strain on joints and residual limb
Professional fitting and support by Credence Prosthetic India
Marketed in India by Credence Prosthetic
Credence Prosthetic India, the authorized marketing partner for Össur, provides:
Comprehensive prosthetic assessment and consultation
Custom fitting and alignment for optimal gait
Access to authentic Össur prosthetic components
Expert after-sales service and technical support
With Credence Prosthetic, Indian amputees have access to internationally recognized prosthetic solutions backed by local professional care.
Ideal Candidate Profile
The OP4 Knee is suitable for:
Transfemoral (above-knee) amputees
Moderately active users
Individuals navigating stairs, slopes, ramps, and uneven terrain
Users seeking stable, smooth, and durable prosthetic knee performance
Regain Mobility, Confidence, and Independence
The OP4 Knee, manufactured by Össur and marketed in India by Credence Prosthetic, provides adaptive, safe, and natural mobility for above-knee amputees. With expert fitting and support, users can walk, work, and live daily life with confidence, comfort, and freedom.
Contact Credence Prosthetic India today to learn more about the OP4 Knee and find the right prosthetic solution for your mobility needs.
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Product Features
| Impact Level | K2/ K3 |




