Case Examples An isolated injury in an adult, bicycle crash Treatment options?

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Presentation transcript:

Case Examples An isolated injury in an adult, bicycle crash Treatment options?

Case Examples Healing via callus formation – secondary bone healing

Case Examples An adult, s/p MVC. Ipsilateral femur fracture. Has comminution and more displacement… Treatment options and predict type of bone healing

Case Examples What is technique of this fixation – the goal regarding type of healing?

Case Examples No callus formation – primary bone healing Absolute stability was achieved with this fixation technique

Case Examples What is standard of care for this isolated, closed femur fracture? What do you predict healing will be?

Case Examples

The IM device allows micro-motion at the fracture Relative stability Healing by callus formation

Case Examples Another femur fracture: 15 years old Treatment options?

Case Examples What fixation strategy was used? What type of healing do you anticipate?

Case Examples Dynamic Compression to achieve absolute stability Primary bone healing No callus formation

Case Examples Another example of absolute stability by reduction and internal fixation with compression No Callus formation – Primary bone healing

Case Examples So does internal fixation using a plate always lead to primary bone healing?

Case Examples Multi-fragmentary humerus fracture, isolated injury. No nerve palsy Treatment options and type of healing?

Case Examples A technique of relative stability – bridge plate. Allows micromotion and callus formation – secondary bone healing

Case Examples

Treated with SHS for neck and a relatively short retrograde nail – just past fracture. Was painful, hardware failing, and not united at 5 months. How does the strain theory apply to the problem? Too much or too little? How to correct?

Case Examples There was too much strain concentrated at the simple fracture gap Revision to longer and bigger reamed IM nail. Added stability and stimulated local biology Bridging completed and callus matured

Case Examples Treatment options?

Case Examples What is goal of this technique of fixation? What type of healing do you expect?

Case Examples 4 months IT fx healed Shaft fx without callus despite an attempt at bridging fixation Why not? What to do?

Case Examples The construct was too stiff, not enough motion and likely compromised biology Converted to a technique that more effectively created relative stability Higher Strain over the comminuted area Callus formed and matured – SECONDARY BONE HEALING

In summary - Bone Healing Primary or Secondary: Either is “good” The goal is to use your skill to create the proper environment for either type of healing ABSOLUTE STABILITY - SIMPLE PATTERNS (no Strain) RELATIVE STABILITY - COMMINUTED FRACTURES (some strain) Recreate anatomic length, alignment, and rotation of the limb Allow early motion and rehabilitation The ultimate goal of restoration of function