How to increase the stability of external fixation units

Egkher, E.; Martinek, H.; Wielke, B.

doi:10.1007/bf01246140

Cited by 31 publications

(9 citation statements)

References 6 publications

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“…As the distance from the PBI to the connecting sidebar increases, the bending moment applied to the pin (hence, pin bending) increases, putting increased stress on the PBI (Pope and Evans 1982). Maximum rigidity of any system is achieved when the distance along the pin from the bone to the sidebar is minimised because stiffness of fixation pins is inversely proportional to the third power of their length (Brinker and Flo 1975;Egkher et al 1980;Egger 1983;Palmer et al 1993). T h e malleable tubing used for the MMA ESF can be contoured to the outline of the mandible before the MMA is introduced into the tubing, therefore the distance between the skin surface and MMA sidebar can be kept to a minimum for each individual fixator pin.…”

mentioning

confidence: 99%

External skeletal fixation in the management of equine mandibular fractures: 16 cases (1988–1998)

Belsito¹,

Fischer²

2001

Equine Veterinary Journal

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Summary Fifty‐three cases of equine mandibular fractures were managed surgically from 1988–1998, of which 16 (30%) were repaired by external skeletal fixation (ESF). Three surgical methods were utilised: transmandibular 4.76 or 6.35 mm Steinmann pins incorporated into fibreglass casting material or nonsterile dental acrylic (methyl methacrylate ‐ MMA) bars reinforced with steel; transmandibular 9.6 mm self‐tapping threaded pins ± 4.76 or 6.35 mm Steinmann pins incorporated into MMA bars reinforced with steel; and 4.5 mm or 5.5 mm ASIF cortical bone screws incorporated into MMA bars reinforced with steel or a ventral MMA splint. Fourteen horses were presented to the hospital for fixator removal at an average of 56.2 days. At removal, fractures were stable and occlusion of incisor and cheek teeth was considered adequate. Complications of the procedure occurred in 3 horses. Two horses with persistent drainage and ring sequestra from pin tracts required curettage 4 or 5 months after ESF removal. A third horse required replacement of the original fibreglass ESF with MMA bars to regain access to open, infected wounds. Another horse required removal of the second premolar at the time of fixator removal because the tooth root had been damaged in the original injury. ESF for the surgical management of mandibular fractures in horses has produced good results, with incisive and cheek tooth alignment reestablished in all horses. Horses that were managed via ESF had a rapid return to full feed and did not require any supplementation via nasogastric tube or oesophagostomy to maintain bodyweight or hydration status.

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confidence: 99%

External skeletal fixation in the management of equine mandibular fractures: 16 cases (1988–1998)

Belsito¹,

Fischer²

2001

Equine Veterinary Journal

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“…The emphasis of most recent work has been in finding the stiffest configuration of particular fixators (Evans et al 1979, Egkher et al 1980 or in comparing different fixators to find the stiffest frame (Campbell & Kempson 1980, McCoy et al 1983. Despite careful theoretical analysis of the ideal fixator configuration, it may be impossible to apply this in the clinical situation because of the nature of the fracture or the soft tissue damage.…”

Section: Introductionmentioning

confidence: 99%

Hughes External Fixator in Treatment of Tibial Fractures

Court-Brown

Hughes

1985

J R Soc Med

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Summary: The results of a prospective trial of the use of the Hughes unilateral external fixator in the management of 48 tibial diaphyseal fractures are presented. Good results were obtained in grade II and III fractures but not in closed and grade I fractures. The results and complication rates were comparable with those of other more complex external fixators. Good results were found to be dependent on the adequacy of the initial reduction and the duration of external fixation, but independent of alterations in pin angle, length and location as well as fixator location.

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“…Affliction of the hips by Charcot’s neuroarthopathy has been reported in isolated case reports or small series in etiologies ranging from diabetes mellitus,19 tabesdorsalis,20 chondrosarcoma of the cervical spine,10 congenital insensitivity to pain,11 intra-articular steroid use21 and even the use of epidural anesthesia in total joint arthroplasty 22…”

Section: Discussionmentioning

confidence: 99%

Neuroarthropathy of the hip following spinal cord injury

Banskota

Bijukachhe

Kazi

et al. 2011

IJOO

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We present the case of a 33-year-old male who sustained a burst fracture D12 vertebrae with spinal cord injury (ASIA impairment scale A) and a right mid-diaphysial femoral shaft fracture around 1.5 years back. The patient reported 1.5 years later with a swelling over the right buttock. Arthrotomy revealed serous fluid and fragmented bone debris. The biopsy showed a normal bony architecture with no evidence of infection and malignant cells. Hence, a diagnosis of Charcot’s hip was made. Charcot’s neuroarthropathy of the feet is a well-recognized entity in the setting of insensate feet resulting from causes such as diabetes or spina bifida. Although Charcot’s disease of the hips has been described, it is uncommon in association with spinal cord injury, syphilis and even with the use of epidural injection. The present case highlights the fact that neuroarthropathy of the hip can occur in isolation in the setting of a spinal cord injury, and this can lead to considerable morbidity.

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How to increase the stability of external fixation units

Cited by 31 publications

References 6 publications

External skeletal fixation in the management of equine mandibular fractures: 16 cases (1988–1998)

External skeletal fixation in the management of equine mandibular fractures: 16 cases (1988–1998)

Hughes External Fixator in Treatment of Tibial Fractures

Neuroarthropathy of the hip following spinal cord injury

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