The intramedullary compression rod

Area of Science:

• Orthopedic surgery
• Biomedical engineering

Background:

• Fracture healing is often complicated by delayed union or nonunion.
• Compression is a debated but potentially beneficial factor in fracture consolidation.

Purpose of the Study:

• To evaluate the efficacy of the Kaessmann compression device in treating long bone fractures and tibial pseudarthrosis.
• To assess the device's impact on healing time, stability, and need for bone grafting.

Main Methods:

• The Kaessmann device, utilizing a Kuntscher nail and tension rod, was applied to 26 patients with long bone fractures.
• Compression (70-80 kg/cm2) was applied to 11 cases of tibial pseudarthrosis without bone grafting.
• Immobilization involved a sliding nail over a tension rod, secured with screws and a locking sleeve.

Main Results:

• 15 tibial fractures achieved prompt healing, with early ambulation and partial weight-bearing.
• 11 tibial pseudarthrosis cases demonstrated prompt union without bone grafting.
• Three ankle fusions also showed successful outcomes with the device.

Conclusions:

• The Kaessmann compression device provides secure immobilization and promotes rapid union in long bone fractures and tibial nonunions.
• Axial compression effectively overcomes distraction, compresses bone ends, and minimizes callus formation.
• The device offers a viable alternative for fracture treatment, potentially reducing the need for bone grafting.