Journal of Musculoskeletal Trauma

Retrograde Flexible Intramedullary Nailing of Pediatric Femur Fractures: Chang Wug Oh, Byung Chul Park, Hyung Jin Park; J Korean Soc Fract 2001;14(2):272-277. Published online April 30, 2001; DOI: https://doi.org/10.12671/jksf.2001.14.2.272

PURPOSE
This study was designed to evaluate the clinical effectiveness including bone union, leg length discrepancy, after retrograde flexible intramedullary nailing for pediatric femoral fractures. MATERIAL AND METHOD: Nineteen cases (18 patients) with femur fracture at the age of 4 to 10 years (mean age 6.7) have been followed up over the minimum of one year. Under imaging intensifier, the fracture was temporarily reduced with manual traction, and 1 or 2 flexible nails were inserted at medial and lateral side of distal femur above the distal epiphysis. After two weeks of immobilization with long leg splint, joint motion was permitted. At 6-8 weeks, partial weight bearing was permitted, and at 10- 12 weeks, full weight bearing was permitted.
RESULTS
Time to radiologic union averaged 10.9 weeks. Limb length discrepancy ranged from 7mm of shortening to 6mm of overgrowth(mean ; 1.1mm of overgrowth), but there was no severe limb length discrepancy over 10mm. As another complications, there were one case of limited motion of knee joint and one case of broken nail.
CONCLUSION
We found that retrograde flexible intramedullary nailing is a safe, effective treatment for acute femoral shaft fractures in skeletally immature patients.

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Treatment of Femoral Shaft Fracture with Interlocking Humeral Nail in Older Children and Adolescent
Kun-Bo Park, Hoon Park, Hyun-Woo Kim, Hui-Wan Park, Jae Young Roh
Journal of the Korean Fracture Society.2010; 23(2): 206. CrossRef

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Effect of Insertion of Bone Graft Substitutes on Consolidation of Distracted Callus: Changes of Radiography & Bone Mineral Density in the Tibia of Rabbits: Chang Wug Oh, Poong Taek Kim, Byung Chul Park, Hae Ryong Song, Il Hyung Park, Jun Ho Baek, Hyung Jin Park; J Korean Soc Fract 2000;13(4):687-695. Published online October 31, 2000; DOI: https://doi.org/10.12671/jksf.2000.13.4.687

Abstract PDF: PURPOSE
This study was designed to know the effect of calcium-sulfate and xenograft on the distracted callus after lengthening.
MATERIALS AND METHODS
We had operation of subperiosteal osteotomy and external fixation on the tibial diaphysis of young New Zealand White rabbits(2.0-2.5kg); after 5 days of latency period, 7 mm(1mm/day, 2 times/day) of tibial lengthening was reached in a week. At 1 week after lengthening, the 1st experimental group of 7 rabbits received a pellet of calcium sulfate(Osteoset , Wright medical, USA) in the distraction gap, and the 2nd experimental group of 7 rabbits received 5mm2 of xenogrfat(Lubboc ) in the distraction gap. But, the control group of 7 rabbits did not receive any of above materials. We compared three groups with the changes of radiographic findings at every week and bone mineral ratio(DEXA) at every two weeks.
RESULTS
The time to complete consolidation of distraction callus of both experimental group(calcium sulfate;14 weeks, xenograft; 15.4 weeks) was shorter than that of control group(16.9 weeks) in radiographic findings. Maximum value of bone mineral ratio of distraction callus was higher and the time to reach the highest value was also shortened in the both experimental group compared to control group.
CONCLUSION
By use of bone substitutes as like calcium sulfate or xenograft in the distraction callus with external fixator, it may be possible to shorten the consolidation period and the fixator-wearing period.

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Treatment Using Unreamed Intramedullary Nailing for Open Tibial Fractures: Chang Wug Oh, Hee Soo Kyung, Joo Chul Ihn, Byung Chul Park, Hyung Jin Park; J Korean Soc Fract 2000;13(2):281-288. Published online April 30, 2000; DOI: https://doi.org/10.12671/jksf.2000.13.2.281

Abstract PDF: PURPOSE
: this paper was to evaluate the treatment results in the viewpoint of bone union, union time, and complications including infection of unreamed nailing of pen tibial fractures.
MATERIALS AND METHODS
: We reviewed 46 open tibial shaft fractures that were treated with unreamed tibial nail. AO unreamed tibial nail was inserted after reduction under image intensifier control, Considering factors were severity of open wound, type and location of fractures.
RESULTS
: Average union time of open fractures was 21.3 weeks, nonunion rate was 2/46(4%). Average union tiome were 24.1, 19.7, 24, 24, 20 weeks in open grade I , II, IIIa, IIIb, IIIc fractures. According to the type of fractures, average union time were 20.4, 23.6, 25.7 weeks and nonunion rate were 0/22, 1/18, 1/6 in type A, B, C fractures. According to the level of fractures, average union time were 24.0, 20.0, 24.1 weeks in proximal, middle, and distal fractures. There was no signficant differences in average period of radiologic union, infection rate and nonunion rate according to fracture level, open grade, but longer union time and higher nonunion rate were observed in complex and comminuted fractures(p<0.05).
CONCLUSION
: With adequate soft tissue treatment, the unreamed intramedullary nailing can be a good treatment modality for open tibial shaft fractures, even to grade IIIB.

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