Table 3. Some important differences between the four frames.

Items	TSF	TL-HEX	Orthex	MAX
Integrated deformity analysis Software	No	Yes	Yes	Yes
Integrated mounting parameters calculation	No	Yes	Yes	Yes
Methods of calculating mounting parameters	Using the trauma CAD TSF interface, a ring, and osteotomy on AP and lateral views. The two views are linked and cannot be unsynced	Using own integrated software. Manual adjustment is required to identify the master tab on the reference ring	Using own integrated software. Using 3 calibration balls to identify the master tab on the reference ring	Using own integrated software. But use small balls on each strut proximally and distally to identify the master tab on the reference ring
Distal referencing	Some sort of adjustment is required	Some sort of adjustment is required	Built in the software	Some sort of adjustment is required
Strut adjustment (sliding and gradual)	No	Yes	Yes	Yes