PubMed · 3313175
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A A Korzh, B A Osipov, V G Ryndenko. 1987. [External fixation with bone nails].. https://pubmed.ncbi.nlm.nih.gov/3313175/
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Distraction osteogenesis has been widely utilized to treat leg length discrepancy, deformity, nonunion, osteomyelitis, and bone loss. It has been found that most difficult conditions can be resolved with this method. This paper introduces the usefulness of distraction osteogenesis for the treatment of nonunion and bone loss after tumor excision. The procedure was found to be extremely effective for the treatment of nonunion accompanied by bone loss and infected nonunion. In particular, the Ilizarov method offers a simultaneous solution for several problems related to nonunion, such as instability, infection, deformity, bone loss, joint contracture, limb length discrepancy, and skin defects. In addition, distraction osteogenesis is safe, useful, and efficient for the treatment of bone loss even after tumor excision. Joint preservation and reconstruction by means of distraction osteogenesis is the most conservative limb-saving surgery available at present. Furthermore, distraction osteogenesis can provide natural limb regeneration.
A three-dimensional finite element study of trochanteric fracture fixation by a trochanteric gamma nail (TGN) was investigated in this study. The analyses were performed under one-legged stance load boundary conditions to study the stress distribution and displacements. The influence of material properties (E-modulus) of the implant, the bone and contact condition in the fracture zone was determined. The results show that the stresses in the implant were lower in case of titanium alloy implant material but at the same time higher displacements occurred. The results also indicate that the stresses in the TGN gradually reduced throughout the healing process of the bone in the fracture zone.
The use of intramedullary hip screws such as the Gamma nail has become a popular option for treatment of proximal femur fractures. The manufacturer recommends that the Gamma nail be inserted at the junction of the anterior (1/3) and posterior (2/3) of the tip of the greater trochanter and on the tip in the same region that the gluteus medius inserts. The purpose of the current cadaveric study was to quantify the damage to the gluteus medius tendon secondary to reaming of the greater trochanter necessary for safe Gamma nail insertion. The gluteus medius was identified and its tendinous insertion was measured. A Kirschner wire was placed in the recommended entry point using the assistance of C-arm fluoroscopy and a 17-mm reamer was advanced over the wire. The tendon then was inspected to evaluate the amount of intrasubstance damage. In 27 of 34 specimens, the portal was contained completely within the tendinous insertion of the gluteus medius. The percentage of the tendon insertion disrupted by the reamer ranged from 14.8% to 52.5% with an average of 27%. During appropriate placement of the Gamma nail, damage to the gluteus medius tendon is unavoidable and should be recognized as a potential cause of postoperative morbidity.