Rotating Hinge Prosthesis for Primary and Revision Knee Arthroplasty: Comparison and Indications

Table 2

Main indication in the Primary group.

Indication		%
Varus/valgus malalignment	43	43.9
Instability	21	21.4
Instability and varus/valgus malalignment	11	11.2
Extension deficit	7	7.1
Obesity	4	4.1
Posttraumatic gonarthrosis	4	4.1
Rheumatism	2	2.0
Unconstrained knee cannot be balanced	2	2.0
Bone loss	2	2.0
Other	2	2.0