Canine Leg Lengthening by the Ilizarov Technique

Jl, Orbay; Vh, Frankel; Je, Finkle; Fj, Kummer

doi:10.1097/00003086-199205000-00040

Cited by 51 publications

(2 citation statements)

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“…The width of the fibrous interzone during distraction should remain constant, so that bone formation corresponds to the amount of distraction 48 . Too slow a rate could result in premature union, while non-union can occur if the rate is too rapid.…”

Section: Discussionmentioning

confidence: 99%

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Alveolar distraction osteogenesis: a systematic review

Saulačić

Iizuka

Martin

et al. 2008

International Journal of Oral and Maxillofacial Surgery

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Section: Discussionmentioning

confidence: 99%

“…Already in 1992, ORBAY et al 48 suggested that excessive prolonged periods of frame application could be deleterious because of bone atrophy. By contrast, the duration of the osseointegration period between implant placement and loading does not seem to have further influence on the peri-implant bone level.…”

Section: Discussionmentioning

confidence: 99%

Alveolar distraction osteogenesis: a systematic review

Saulačić

Iizuka

Martin

et al. 2008

International Journal of Oral and Maxillofacial Surgery

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Porous ceramics as bone graft substitutes in long bone defects: A biomechanical, histological, and radiographic analysis

Johnson

Frierson

Keller

et al. 1996

Journal Orthopaedic Research

213

115

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Three porous ceramic bone graft materials were compared with regard to their ability to heal a 2.5 cm defect created surgically in a bilateral canine radius model. The ceramic materials were analyzed at 12 and 24 weeks after surgery and included tricalcium phosphate, hydroxyapatite, and collagen hydroxyapatite, which contained a mixture of 35% tricalcium phosphate and 65% hydroxyapatite with added collagen. Each material was evaluated alone and with added bone marrow aspirate. All the implants were compared with a graft of autogenous cancellous bone in the contralateral radius. Biomechanical testing and radiographic evaluation revealed that the addition of bone marrow aspirate was essential for tricalcium phosphate and hydroxyapatite to achieve results comparable with those of cancellous bone. Collagen hydroxyapatite performed well without the addition of bone marrow, although the addition of marrow did have a positive effect. Further qualitative radiographic and histological analysis demonstrated that tricalcium phosphate was the only ceramic that showed any sign of degradation at 24 weeks. This observed degradation proved to be an important factor in evaluating radiographs because the radiodensity of collagen hydroxyapatite and hydroxyapatite interfered with the determination of radiographic union. At 24 weeks, tricalcium phosphate with bone marrow was the material that performed most like cancellous bone. In this study, the biomechanical and radiographic parameters of tricalcium phosphate with bone marrow were roughly comparable with those of cancellous bone at 12 and 24 weeks. Tricalcium phosphate was the only implant that showed significant evidence of degradation at 24 weeks by both histological and radiographic evaluations, and this degradation took place only after a degree of mechanical competence necessary for weight-bearing was achieved.

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Morphometric analysis of canine skeletal muscles following experimental callus distraction according to the ilizarov method

Fink

Neuen-Jacob

Madej

et al. 2000

Journal Orthopaedic Research

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Muscle fiber diameter and fiber-type distribution were analyzed during callus distraction. The right tibia in 24 beagles was lengthened 2.5 cm by callus distraction after osteotomy and application of a ring fixator. Distraction was started at the fifth postoperative day, at a rate of two times for 0.5 mm per day. Twelve dogs that underwent limb-lengthening and three dogs in the control group that did not undergo limb-lengthening were killed at the end of the 25-day distraction phase (group A). The remaining dogs (12 that underwent limb-lengthening and three that did not) were killed after an additional consolidation period of 25 days (group B). The tibialis anterior, extensor digitorum longus, peroneus longus, and gastrocnemius muscles were removed from the right limb (which had undergone distraction) and the left control side of each animal. Crosscut cryostat sections were stained by adenosine triphosphatase at pH 4.3 and 9.4 to determine the size and distribution of types I and II fibers. Morphometric analysis of the muscle fibers was performed by a computer-assisted two-point technique. On the lengthened side, the muscles revealed marked atrophy affecting predominantly type-II fiber in the dogs in group A and affecting both fiber types in dogs in group B. Fiber density increased in both groups. In addition, fiber-type grouping indicative of reinnervation was obvious in group B. Fiber-type distribution in the dogs in group B showed a shift toward type I in the tibialis anterior (p = 0.043) and extensor digitorum longus (p = 0.034) muscles and a shift toward type II in the gastrocnemius (p = 0.038). The data show that tension-stress during tibial lengthening leads to atrophy of type-II fiber, reflecting disuse of muscle fiber in the distraction period as well as neurogenic atrophy followed by the reinnervation processes. Furthermore, the data are consistent with the occurrence of histoneogenesis during limb-lengthening resulting in an increase in fiber density.

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Canine Leg Lengthening by the Ilizarov Technique

Cited by 51 publications

References 0 publications

Alveolar distraction osteogenesis: a systematic review

Alveolar distraction osteogenesis: a systematic review

Porous ceramics as bone graft substitutes in long bone defects: A biomechanical, histological, and radiographic analysis

Morphometric analysis of canine skeletal muscles following experimental callus distraction according to the ilizarov method

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