# AK Hinge Knee System (AHK)

> Rotating hinge knee for most severe cases. 25° internal/external rotation, 42mm jump height, compatible with 3D trabecular metal cones, uses A3/ACCK instruments.

- URL: https://www.ak-medical-global.com/products/knee-system/ak-hinge-knee-ahk
- Manufacturer: AK Medical Holdings Limited (HKEX: 01789.HK)
- Product family: Knee System > Revision
- Regulatory clearances: NMPA (China, formerly CFDA); CE Mark (European Union)
- Keywords: Hinge Knee, Knee revision
- Surgical technique videos: https://www.youtube.com/watch?v=vZAcqmwVsaY

## Description

The AK Hinge Knee System (AHK) provides a conformity ratio virtually 1:1 with up to 25° of internal/external rotation capability. Compatible with 3D Trabecular Metal Cones, the flexible modular design uses A3/ACCK instruments. Features 42mm maximum "jump height" and is compatible with the A3 patella design.

## Specifications

| Property | Specification |
|---|---|
| Conformity Ratio | Virtually 1:1 |
| Internal/External Rotation | Up to 25° |
| Maximum Jump Height | 42mm |
| Instrument Compatibility | A3/ACCK instruments |

## Features

- Virtually 1:1 conformity ratio for inherent stability
- Up to 25° internal/external rotation for physiological kinematics
- Compatible with 3D Trabecular Metal Cones for osseointegration
- Flexible modular design for intraoperative adaptability
- Uses existing A3/ACCK instruments to reduce OR inventory
- 42mm "jump height" maximum for dislocation resistance
- Compatible with A3 patella design
- Suitable for complex revision knee arthroplasty