the logic and clinical applications of blocking screws pdf

The logic and clinical applications of blocking screws pdf

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Published: 02.06.2021

Fine-Tuning of blocking screws in long bone nailing

Fine-Tuning of blocking screws in long bone nailing

Skip to search form Skip to main content You are currently offline. Some features of the site may not work correctly. DOI: Shahulhameed and C. Roberts and N.

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Keywords : Deformity correction, Internal lengthening nail, Intramedullary nail, Limb lengthening, Poller screw, Precice,Blocking screw. DOI: Published Online: Strategies in Trauma and Limb Reconstruction. Related articles. Original Article.

Introduction: There are several important technical points that need to be observed when using an intramedullarynail to fix diametaphyseal fractures of distal tibia, mainly the angular deformity. Objective: We aimed to describe a technique using 4. Methods: 25 distal tibial diametaphyseal fractures who were treated with this technique were identified. Results: There was no case of non-union or malunion at the last follow-up. Conclusion: Steinmann pin function essentially as a Poller screw for centralization of the nail and help to ensure reduction. Locking the nail in different directions, appropriater eduction can be maintained until the bone heals and there is no need for additional fixation material.


Nail removed, and drill for Poller screw using radiolucent drill Use of Blocking Screw (Poller screw) Stedtfeld, The Logic and Clinical Applications of.


Internal lengthening nail ILN is a recent development in limb lengthening and deformity correction specialty. The ILN has the distinct advantage of combining acute deformity correction with gradual lengthening of bone. While using ILN, the short metaphyseal bone fragment may develop a deformity at the time of osteotomy and nail insertion or during bone lengthening because of the wide medullary canal. These deformities are typically predictable, and blocking screws Poller screws are helpful in these situations.

Intramedullary nails have been the treatment of choice for acute femur-shaft fractures in adults. However, the infraisthmal location has a high risk of nonunion and is easy to malalign. This study evaluated radiologic outcomes of initial supportive use of poller screws in combination with antegrade femoral nailing in infraisthmal femur-shaft fracture. A total of 49 patients who had undergone antegrade nailing with or without supportive poller-screw insertion for infraisthmal femur-shaft fracture were included in this retrospective cohort study 23 patients with poller screws in group 1 versus 26 patients without poller screws in group 2.

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Correspondence Address : Dr. Intramedullary nails IMNs are commonly used for fracture fixation of the femur and tibia, and internal lengthening nails ILNs can be used for deformity correction and limb lengthening. While this form of fixation has demonstrated substantial success, one major limitation is imperfect reduction and malalignment, particularly when used for fractures or osteotomies in the metaphysis. One means of overcoming this challenge is through the use of blocking screws, given their ability to guide the path of the nail, decrease the width of the medullary canal, and maintain reduction. In this literature review, indications, techniques, outcomes, and complications are reported. Technique articles and single case reports were not reviewed. All other English studies reporting outcomes of IMN or ILN fixation of the femur or tibia with concomitant use of blocking screws were reviewed.

Internal lengthening nail ILN is a recent development in limb lengthening and deformity correction specialty. The ILN has the distinct advantage of combining acute deformity correction with gradual lengthening of bone. While using ILN, the short metaphyseal bone fragment may develop a deformity at the time of osteotomy and nail insertion or during bone lengthening because of the wide medullary canal. These deformities are typically predictable, and blocking screws Poller screws are helpful in these situations. This manuscript describes the common deformities that occur in femur and tibia with osteotomies at different locations while using ILN in antegrade and retrograde nailing technique. Also, a systematic approach to the appropriate use of blocking screws in these deformities is described. In addition, the "reverse rule of thumb" is introduced as a quick reference to determine the ideal location s and number of blocking screws.

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    Request PDF | On Feb 1, , Hans-Werner Stedtfeld and others published The Logic and Clinical Applications of Blocking Screws | Find.

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