Chattanooga OptiFlex K1 Knee CPM Unit with Comfort Pendant

The Chattanooga OptiFlex K1 Knee CPM Unit is a continuous passive motion device designed to aid recovery following knee surgery by gently moving the joint through a controlled range of motion to reduce stiffness, minimize scar tissue formation, and support restoration of functional range of motion. Weighing just 23 lbs, it is the lightest knee CPM unit on the market, and at only 38 inches in length it is compact and easy to position on the patient's bed. The interchangeable comfort pendant hand control offers maximum versatility, and the on-board power supply accepts universal voltage for use in any clinical or home setting. Two-year warranty.

Note: This product ships directly from the manufacturer. Please allow up to 10 business days for processing and delivery.

Key Features

• Lightest knee CPM on the market at 23 lbs (10.4 kg)
• Compact design — only 38 inches (97 cm) in length
• Interchangeable comfort pendant hand control for maximum versatility
• ROM range: -10 to 120 degrees of knee flexion and extension
• Speed range: 25 to 180 degrees per minute
• Pause function: 0 to 59 seconds
• Built-in force reversal at 45 Kp for patient safety
• Wide low-profile closed-base frame for stability
• Faster motor speed with single screw drive
• Reversible footplate accommodates shorter leg lengths
• Patient lockout feature
• On-board power supply, universal voltage 100V–240V AC
• Accommodates patients 4 ft to 6.5 ft in height
• Two-year warranty

Specifications

• SKU: CHAT2028
• Brand: Chattanooga
• Knee Flexion: 0 to 120 degrees
• Knee Extension: -10 degrees
• Speed: 25 to 180 degrees per minute
• Pause: 0 to 59 seconds
• Force Reversal: 45 Kp (built-in)
• Patient Height Range: 4 ft to 6.5 ft (1.2 to 2 m)
• Calf Length Range: 10 to 22 inches (25.4 to 55.9 cm)
• Thigh Length Range: 12 to 19 inches (30.4 to 48.2 cm)
• Power: 100V–240V AC, 50–60 Hz
• Electrical Safety Class: Class 1, Type B
• Unit Weight: 23 lbs (10.4 kg)
• Shipping Weight: 54 lbs (24.5 kg)
• Dimensions: 38 x 14 x 9 inches (97 x 36 x 23 cm)
• Warranty: 2 years
• Country of Origin: United States

Ideal For

Post-surgical knee patients recovering from total knee arthroplasty, ACL reconstruction, or other significant knee procedures will benefit from the OptiFlex K1's gentle continuous passive motion, which helps maintain joint mobility during the early recovery phase when active exercise may not be possible. Orthopedic surgeons and physical therapists prescribing CPM therapy for post-operative knee patients will find the K1's lightweight, compact design easier to set up and position on the patient's bed compared to heavier, longer CPM units, reducing setup burden for both clinical staff and home care aides. Home care patients transitioning from inpatient to outpatient recovery will appreciate the unit's manageable weight and universal power supply, which make it practical for use in a standard home environment without requiring specialized electrical setup. DME providers and home health agencies supplying CPM units for post-surgical knee patients will find the two-year warranty and manufacturer-direct shipping support a straightforward fulfillment and service model.

Frequently Asked Questions

What is continuous passive motion (CPM) therapy?
CPM therapy uses a motorized device to move a joint through a controlled range of motion repeatedly without active patient effort. After knee surgery, CPM is used to reduce joint stiffness, limit scar tissue formation, and support gradual restoration of range of motion during the early post-operative period. CPM therapy is prescribed by a physician and typically used in combination with physical therapy.

What range of motion does the OptiFlex K1 support?
The OptiFlex K1 supports knee extension to -10 degrees and knee flexion to 120 degrees. The treating clinician sets the starting and ending range based on the patient's post-operative protocol, and progression is adjusted as recovery advances.

How long does shipping take?
This product ships directly from the manufacturer. Please allow up to 10 business days for processing and delivery. Expedited shipping may be available — contact us before placing your order if you have a time-sensitive need.

Is this covered by insurance?
CPM units are sometimes covered by Medicare or private insurance for qualifying post-surgical indications when prescribed by a physician. Coverage eligibility, documentation requirements, and reimbursement amounts vary by plan and clinical indication. Consult your prescribing physician and insurance provider to determine your coverage before purchase.