Limb Deformity Correction Using the Ortho SUV Frame

@#BACKGROUND AND OBJECTIVE: Limb deformity in terms of length discrepancy, angular and rotational deformities are amenable to correction using the Ilizarov method. The corrections can be achieved using the Ortho SUV Frame (OSF), a computer assisted six axes external fixator. Previous studies have reported easier and more accurate deformity correction. In this study, we report on our initial experience and treatment outcomes in using this system. MATERIALS AND METHODS: This study is a case series of patients where the Ilizarov circular frame was applied and which the deformity correction was carried out using the OSF. Success and accuracy in correction, length of time to correct, number of revisions needed and complications were gathered from a review of medical records. RESULTS: Thirty limbs in twenty nine cases were included in this report. Seventy seven percent (23/30) of the deformities were due to previous trauma. The rest were due to Blounts, infection and tumor. Correction in eighty seven percent (26/30) were achieved using the turning schedule provided by the Ortho SUV application software. Three cases required surgical removal of soft tissue interposition before further correction using the software was achieved. One case with posterior translation underwent closed manipulation. In the end all planned deformity corrections were achieved. Complications included pin tract swelling and erythema in 13% and all resolved either with oral antibiotics alone or combined with surgical release of pin sites under local anesthesia. CONCLUSION: The Ortho SUV is an effective tool to carry out deformity corrections using the Ilizarov method.

Sirenomelia with Potter syndrome: a case report and review of literature

Sirenomelia or mermaid syndrome is a rare congenital anomaly characterized by variable degree of fusion of lower extremities. Awareness to this rare condition is important for prenatal diagnosis and prognosticating the fetus. The exact etiopathogenesis is still an area of research. Two pathogenic hypotheses are the vascular steal hypothesis and the defective blastogenesis hypothesis with exceptions reported in literature.

Leg Length Discrepancy and Angular Deformity after Flexible Intramedullary Nail fixation in Pediatric Femoral Shaft Fractures

OBJECTIVE: Femoral fracture is one of the most frequent fractures in children and complications occurs such as malunion and leg length discrepancy after internal fixation using flexible intramedullary nail. The author intended to consider operational treatment using flexible intramedullary nailing through a quantitative data including age, pattern and location of fracture for angulation, and leg length discrepancy. METHODS: A retrospective survey was performed by 30 cases of child patients who underwent internal fixation using flexible intramedullary nail for femoral shaft fracture. Using a simple radiography, duration of union and angulation were measured. Leg length discrepancy was evaluated by scanogram. By measuring each 2 times at an interval of 1 week by 2 observers, error among observers and error in observer were excluded. For statistical validation, t-test and lineal regression analysis were used. RESULTS: Immediate postoperatively, valgus condition of 7 degrees was represented and affected side was represented to show varus of 5.6 degrees on average in 46.6% of child patients. The more age of patient is young, more angulation was represented to be significantly taken place in transverse fracture rather than oblique fracture, but depending on fracture location, significant difference was not observed. Leg length discrepancy showed overgrowth of 6.39 mm on average. And cases of overgrowth over 5 mm being were represented and age of all the child patients was below 9 years old. As a result of statistical analysis, it was observed that the age is younger, leg length discrepancy was prone to be occurred, and its significant relevance with fracture form or fracture location was not represented. CONCLUSION: Transverse fracture is represented at the time of performing internal fixation using flexible intramedullary nail. Occurrence rate of angulation and leg length discrepancy was high but follow-up period is required to be extended even after the time when growth is completed on a long-term basis and in case of imperfect correction, additional treatment such as physeal plate stapling is required. Bone shortening and lengthening may be required and it is considered to be a useful method for femoral shaft fracture of children.

Low Grade Chondrosarcoma Presenting as Progressive Valgus Limb Deformity in a Growing Period / 대한골관절종양학회지

A femoral bone tumor causing a valgus deformity by affecting the growth plate was found. Long intramedullary diaphyseal tumor was separated by septum at the metapysis. Low grade chondrosarcoma was confirmed diagnosed by pathologists. Progressive limb deformity can be a sign of bone tumor in growing period.

Correction of deformity with major bone defect by lengthening with different external fixators / 中国矫形外科杂志

[Objective]To study the correction of deformity with major bone defect by lengthening with different external fixators and to evaluate the results.[Method]From August 2000 to March 2004,7 patients suffering from deformity with major bone defect were treated by external fixators including Ilizarov, Orthofix LRS,and Hybrid external fixators combined with Orthofix LRS.Linar or wedged osteostomy was carried out at the deformity site.Wedged osteotomy and callus distraction were used for the cases of deformity with limb shortening,and compression of dock site combined with bone transport was used for those of deformity with bone defect and shortening.[Result]The cases corrected were: 1 femur with anterior angular deformity and 7cm shortening,and 6 tibiae including 2 varus deformities,2 posterior angular deformities,and 2 complex deformities.The average length was 5.3cm(4.5～7 cm),with an average distraction time of 3.5 months and followed by an average time of external fixation of 7 months.There were no obvious complications,such as vascular and nerve injuries.The function of the adjacent knee and ankle was not affected.[Conclusion]External fixators including Ilizarov,Orthofix LRS and Hybrid external fixators may provide one of good alternatives for correction of deformity with major bone defect.Compared with Ilizarov,Orthofix LRS and Hybrid external fixators are more conventional,more advantaged,and preferred,especially for its distinct clamp which can provide multi-plane fixation and correct the deformity simultaneously with limb lengthening.