[Osteosynthesis of tibial valgus osteotomies by goniometric CH-N external fixator].

Introduction: The authors present technique and results of a new external fixator, the < < goniometric > > external fixator CH-N for osteosynthesis of high tibial osteotomy for arthritic varus knee deformity on 86 kness (75 patients).

Materials And Methods: 86 knees in varus deformity with degenerative arthritis of the medial compartment (56 females and 16 males - age 63 +/-8 years) were treated for 5 years (1989-1993) by high tibial osteotomy stabilized by a < < goniometric > > external fixator CH-N.

Results: Clinical results were 65,9 per cent excellent, 17, 1 per cent good, 11,8 per cent fair and 5,2 per cent poor 1 year after osteotomy (86 cases analyzed), changing in 60 per cent excellent, 22,3 per cent good, 9, 1 per cent fair and 8,5 per cent at 3 years follow-up (61 cases).