[Difficulties and dangers of arthroplasty in valgus knee deformity]

In orthopaedic surgeon's opinion arthroplasty in knee joints with valgus deformity is very difficult and risky than in those without deformation or in varus angulation. The authors in the paper analysed deformity morphologies in valgus knees, observed intra-operative problems, as well as obtained results and complications and compare them with those occurred in varus knees. Observations were based on 33 joints (30 persons, 27 females, 3 males), which were operated by primary cemented total knee replacements. The patients' age ranged from 41 to 82 years. The knee function was measured on the base of HSS rating score. The results of HSS obtained before surgery were compared with those from the last control visit. Relaying on surgery reports, analyses of the procedure and the solutions needed to correct the deformity were done. On the basis of X-rays the alignment and positions of the prostheses were evaluated. The results obtained in valgus knees were comparable with TKA in varus knees. The complication rate and necessity of additional steps of the procedure is higher in valgus deformation.