Comparative clinical study on deformity correction accuracy of different external fixators

Abstract

Purpose In this study, the correction accuracy of Smart Correction spatial fixators and of Ilizarov-type external fixators are compared in terms of deformity complexity. Methods Seventy-seven (40 male, 37 female) bone segments of 57 patients treated with a Smart Correction device were compared with 94 (51 male, 43 female) segments of 68 patients treated with an Ilizarov fixator. Mean age of the Smart Correction group was 20.69±12.94 years, and or the Ilizarov group 22.45±12.18 years. Patients were categorised according to limb lengthening and the number of deformity planes.

Results of deformity correction in children with X-linked hereditary hypophosphatemic rickets by external fixation or combined technique

“…b Bisegmental polyfocal osteosynthesis with the Ilizarov frame of the left lower limb associated with intramedullary nailing (retrograde in the femur and ante-retrograde in the tibia) and radiograph of the limb at the beginning of ambulating with full weight bearing, at age 4.5 years. c Similar type of osteosynthesis performed at age 5.5 years for deformity correction of the right lower limb d Radiograph of the lower limbs in 20 months after the second stage of operative treatment; there is valgus shape of the right lower limb and varus of the left lower limb e At age of 12 years, development of valgus deformities at the level of distal metadiaphysis of the right femur and proximal metadiaphysis of the right tibia, on the left femur a varus deformity of distal metadiaphysis (mLDFA 93°) was noted, but there were no recurrent deformities at the level of reinforced bone areas conditions from a point of view of accuracy of deformity correction, abilities of gradual controlled correction of all deformity components in a postoperative period at a level of femur and tibia, absence of interference in growth cartilages, and absence of inhibition of the following segment growth in length [14,17,19,[34][35][36].…”

Hemi-wedge osteotomy in the management of large angular deformities around the knee joint

“…In such cases, gradual correction by external fixator is the preferred method of treatment. Although good and accurate, it has many disadvantages such as pin tract infection, long time of external fixation and patient intolerance [14].…”

Bilgisayar destekli heksapodal eksternal fiksatörlerle deformite düzeltme

“…Özellikle deformitenin kompleksitesinin artması ile rezidüel deformitenin arttığı Eren ve ark. 'nın [11] çalışmasında gösterilmiştir. Hangi durumlarda klasik İlizarov çerçevesi yerine bilgisayar destekli eksternal fiksatör yapılmasına yönelik bir algoritma geliştiren Cherkashin ve ark.…”

“…O da halkanın referans alınan segmente ortogonal (dik) olarak fiksasyon yapılma zorunluluğunu ortadan kaldırmış olması ve montaj parametresi hesaplanmasına gerek kalmaksızın bunu halkaların ve çubukların uzaysal konumuna göre otomatik olarak hesaplayan bir yazılım geliştirmiş olmasıdır. [11][12][13] 2009 yılında piyasaya sürülen Türkiye menşeli diğer fiksatör ise Adam Frame (Imed Surgical) ismindeki oktopodal bir fiksatördür. Gelmiş geçmiş tek oktopodal fiksatör olması önemli bir özelliğidir (Şekil 4).…”