+ Site Statistics
+ Search Articles
+ PDF Full Text Service
How our service works
Request PDF Full Text
+ Follow Us
Follow on Facebook
Follow on Twitter
Follow on LinkedIn
+ Subscribe to Site Feeds
Most Shared
PDF Full Text
+ Translate
+ Recently Requested

Limb lengthening by epiphyseal distraction. An experimental study in the caprine femur



Limb lengthening by epiphyseal distraction. An experimental study in the caprine femur



Journal of Orthopaedic Research 5(4): 592-599



Epiphyseal distraction of the left distal femur was accomplished in 10 goats (aged 3-4.5 months). A modified Hoffmann external fixation device was used as a unilateral distraction frame. A distraction rate of 1.5 mm/day was applied for 5.5 weeks. Epiphysiolysis occurred after 3-7 days of distraction. After the lengthening procedure, the growth plate had reduced in height in eight animals on radiographic examination. In two animals the growth plate was fused. Three animals were killed at 4 (Group 1) and 8 (Group 2) weeks and four animals at 16 (Group 3) weeks after the end of the distraction period. The gain in leg length obtained by distraction was reduced owing to growth retardation in the distal femur of the operated limb. The average final lengthening was 24.9, 19.4, and 13.4% in Groups 1, 2, and 3, respectively. Femur and tibia from both sides were tested mechanically in torsion. Only one femur fractured in the elongation area. All but one elongated femur fractured in the area of the diaphysis subjected to distractional force. The torsional strength of the elongated femur compared with control was reduced to approximately 50% in all groups. The corresponding torsional strength of the tibia on the elongated extremity compared with control was reduced to approximately 75% in all groups. The difference in relative strength of femur compared with that of tibia was statistically significant. This finding can be explained by a stress-protective effect on the femur in the distraction area caused by the external device.

Please choose payment method:






(PDF emailed within 0-6 h: $19.90)

Accession: 005811539

Download citation: RISBibTeXText

PMID: 3681532

DOI: 10.1002/jor.1100050415


Related references

Limb lengthening by low rate epiphyseal distraction. An experimental study in the caprine tibia. Journal of Orthopaedic Research 6(3): 360-368, 1988

Limb lengthening by epiphyseal distraction in chondrodystrophic bone: an experimental study in the canine femur. Journal of Orthopaedic Research 7(2): 184-191, 1989

Experimental limb lengthening by epiphyseal distraction. Clinical Orthopaedics and Related Research 1978(136): 111-119, 1978

Growth retardation after experimental limb lengthening by epiphyseal distraction. Journal of Pediatric Orthopedics 10(4): 463-466, 1990

Limb lengthening by diaphyseal corticotomy, callus distraction, and dynamic axial fixation. An experimental study in the ovine femur. Journal of Orthopaedic Research 6(5): 730-735, 1988

Experimental study of leg lengthening by epiphyseal distraction. Journal of Kyoto Prefectural University of Medicine 97(10): 1271-1287, 1988

Limb lengthening by epiphyseal distraction. International Orthopaedics 5(2): 85-90, 1981

Distraction of the epiphyseal cartilage as a method of limb lengthening. Journal of Pediatric Orthopedics 4(1): 105-108, 1984

Lower limb lengthening by epiphyseal distraction a report of 42 cases. Zhonghua Guke Zazhi 7(3): 173-175, 1987

Limb lengthening by distraction of the epiphyseal plate. A comparison of two techniques in the rabbit. Journal of Bone and Joint Surgery. British Volume 68(4): 545-549, 1986

Limb lengthening with epiphyseal and callus distraction using the Wiesbaden ring fixator. Der Orthopade 21(3): 210-220, 1992

Chondrodiatasis-controlled symmetrical distraction of the epiphyseal plate. Limb lengthening in children. Journal of Bone and Joint Surgery. British Volume 68(4): 550-556, 1986

Distraction epiphysiolysis as a method of limb lengthening. I. Experimental study. Clinical Orthopaedics and Related Research .(154): 254-261, 1981

Limb lengthening by way of slow distraction of the epiphysis. An experimental study. Zhonghua Wai Ke Za Zhi 27(3): 177-9 190, 1989

Limb lengthening in three dogs using distraction rates without a latency period. Radius/ulna, tibia, femur. Veterinary and Comparative Orthopaedics and Traumatology 21(5): 446-450, 2008