title: No difference in tibial lengthening index by use of Taylor spatial frame or Ilizarov external fixator.
abstract: BACKGROUND
  Different methods and devices are used to perform lengthening and deformity reconstruction in the tibia. Recently, the Taylor spatial frame (TSF) has been introduced as a computer-assisted and versatile external ring fixator. Lengthening index (LI) and complications are important result parameters, and the aim of this study was to review our first 20 tibial segments operated with the TSF and to compare the results with our experience of using the traditional Ilizarov external fixator (IEF).
  
  
  METHODS
  We lengthened 20 tibial segments in 20 patients with the TSF. The results were compared with those of 27 tibial segments from 27 patients that were lengthened with the IEF. All segments were operated on with monofocal osteotomies.
  
  
  RESULTS
  In the overlapping zone of comparable lengthening distances between 2.4 and 6.0 cm, the LI of 2.4 and 1.8 months/cm was not significantly different between the TSF and IEF groups, respectively (p = 0.17). This non-significant difference was confirmed after adjustment for age.
  
  
  CONCLUSIONS
  We found no difference between the TSF and IEF frames regarding LI and complication rate. However, rotational, translational, and residual deformity correction is easier to perform with the TSF.
authors.affiliation: Rikshospitalet-Radiumhospitalet Medical Center, Biomechanics Laboratory, Orthopaedic Department, University of Oslo, Oslo, NO-0027, Norway. leif.pal.kristiansen@rikshospitalet.no
authors.forename: Leif Pål
authors.initials: LP
authors.lastname: Kristiansen
authors.forename: Harald
authors.initials: H
authors.lastname: Steen
authors.forename: Olav
authors.initials: O
authors.lastname: Reikerås
mesh_terms: D000293:Adolescent; D000328:Adult; D001852:Bone Lengthening / Q000009:adverse effects / Q000295:instrumentation / Q000379:methods*; D002648:Child; D002675:Child, Preschool; D016267:External Fixators; D005260:Female; D017759:Fractures, Malunited / Q000601:surgery; D006801:Humans; D018889:Ilizarov Technique / Q000009:adverse effects / Q000295:instrumentation; D007870:Leg Length Inequality / Q000601:surgery; D008297:Male; D008875:Middle Aged; D010027:Osteotomy / Q000379:methods; D013977:Tibia / Q000002:abnormalities / Q000601:surgery*; D013978:Tibial Fractures / Q000601:surgery; D016896:Treatment Outcome