An In Vitro Biomechanical Investigation of Compression Plating with Cable Cerclage for Repair of Oblique Osteotomies in Foal Femurs

Summary Long oblique diaphyseal osteotomies were created in 14 pairs of femurs from cadaver foals less than six months of age. One bone from each pair was repaired using two dynamic compression plates (DP), and the other was repaired using a dynamic compression plate with cable cerclage (CC). Seven pairs were tested in compression and seven pairs in craniolateral-caudomedial (CrL-CdM) three-point bending. A difference was not found in mean (± SD) breaking strength in compression between the DP (7257.19 ± 2004.08 N) and CC (7761.41 ± 2552.91 N) techniques. Nor was there a difference in mean stiffness in compression between the DP (2533.83 ± 1777.38 N/mm) and CC (3177.98 ± 1694.70 N/mm) techniques. There was no difference in mean stiffness in three-point bending between the DP (244.60 ± 60.80 N/mm) and CC (195.50 ± 80.90 N/mm) techniques. The mean bending breaking strength and bending moment for the DP technique (2839.36 ± 199.46 N and 124,932.00 ± 8776.38 N mm) was significantly (P = 0.02) greater than the CC technique (1940.39 ± 732.80 N and 85,377.72 ± 32243.34 N mm). The CC system was inferior to the DP technique in CrL-CdM three-point bending strength and moment, but provided equal bending stiffness and equal compressive strength and stiffness. The use of compression plating with cable cerclage was compared to double plating for repair of long oblique osteotomies in foal femurs. The repairs were tested in compression and 3-point bending. The compression plate with cable cerclage was inferior to double plating in bending strength and moment, but provided equal compressive strength and stiffness.

[1]  M. Markel,et al.  In vitro biomechanical comparison of solid and tubular interlocking nails in neonatal bovine femurs. , 1995, Veterinary surgery : VS.

[2]  M. E. Mccann,et al.  Conservative management of femoral diaphyseal fractures in four foals. , 1993, The Cornell veterinarian.

[3]  R. Schneider,et al.  Retrospective study of 38 cases of femur fractures in horses less than one year of age. , 1992, Equine veterinary journal.

[4]  L. Dorr,et al.  Treatment of fractures about hip prostheses with compression plating. , 1992, The Journal of arthroplasty.

[5]  A. Nixon,et al.  Cranial approach to the humerus for repair of fractures in horses and cattle. , 1991, Veterinary surgery : VS.

[6]  E. J. Zenni,et al.  Ogden plate and other fixations for fractures complicating femoral endoprostheses. , 1988, Clinical orthopaedics and related research.

[7]  H. Lindberg,et al.  Femoral fracture following hip arthroplasty. , 1987, Acta orthopaedica Scandinavica.

[8]  L. R. Bramlage.  Long bone fractures. , 1983, The Veterinary clinics of North America. Large animal practice.

[9]  C. Boulton,et al.  Equine femoral fracture repair: A case report , 1983 .

[10]  A W Miles,et al.  Re-attachment of the greater trochanter. The use of the trochanter cable-grip system. , 1983, The Journal of bone and joint surgery. British volume.

[11]  F. Derksen,et al.  Intramedullary pinning of a fractured femur in a foal. , 1980, Journal of the American Veterinary Medical Association.

[12]  B. Bierbaum,et al.  Trochanteric osteotomy: analysis of pattern of wire fixation failure and complications. , 1979, Clinical orthopaedics and related research.

[13]  L. Whiteside,et al.  The effects of extraperiosteal and subperiosteal dissection. II. On fracture healing. , 1978, The Journal of bone and joint surgery. American volume.

[14]  W. B. Ledbetter,et al.  Capacity of installed commercial bone fixation plates. , 1971, American journal of veterinary research.

[15]  W. Estes.  FRACTURES OF THE FEMUR , 1916, Annals of surgery.