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Learn the Dunns osteotomy surgical technique with step by step instructions on OrthOracle. Our e-learning platform contains high resolution images and a certified CME of the Dunns osteotomy surgical procedure.
Severe grade II/III unstable slipped upper femoral epiphysis (SUFE/SCFE) is associated with high rates of avascular necrosis (AVN). Historically rates as high as 50% have been quoted. In view of this there has been a tendency to perform the simplest and (perceived) least risky operation. This is generally held to be pinning in situ.
The Dunn osteotomy was described for stable and unstable SUFE. The osteotomy is performed at the level of the physis. Subsequent authors generally failed to match the results of the original author. However, the advent of the trochanteric flip osteotomy and extended reticular flaps as described by Ganz has reignited interest and the ‘modified’ Dunn osteotomy has had encouraging results in the hands of high volume surgeons.
The classic modified Dunn osteotomy requires division of the ligament trees and dislocation of the femoral head. We describe an alternative method where by the femoral head is not dislocated and the ligamentum trees is preserved.
Author: Mr Christopher Edward Bache FRCS(Tr & Orth)
Institution:The Birmingham Childrens’ Hospital
- Each operation and the questions associated become a named course in the CPD section
- The operative technique itself is read as a lesson as is any company implant information if this is being assessed.
- You’ll need to tick the box to confirm this has been done and can do this immediately if you have already read the op tech.
- The vast majority of operations have a 10-15 MCQ quiz covering all aspects of the decision making and the technique
- There are four possible answers of which one is correct (or on occasion more correct) than the others.
- There are additional quiz modules on the surgical steps, the implants and problem cases being added continually
- The course is completed once all the lessons are read and quizzes submitted and passed.
- On successful completion of each quiz you will receive validated CPD points that add to the certificate in your CPD folder.
- Your dashboard also will contain a record of the time you have spent logged onto and using the site.
- The timer suspends after 5 minutes though if there is no activity.
- When you restart you will resume at the same point in the module.
- Once you have completed each quiz you will need to feedback on the module first then click “submit” and your paper will be marked.
The pass mark is 75%.
- If you fall below this level you will be directed back to re-read the slides where you’ve tripped up.
- Once these have been read you can re-do just the questions you failed on.
- Once you have passed the quiz you can return at a future stage & resit .
- Operation Quiz – 1 CPD point
- Surgical steps Quiz – 1/4 CPD point
- Implants Quiz – 1/4 CPD point
- Problem case Quiz – 1/2 CPD point
One CPD point equates to one hour of academic activity
Welcome to the Professional Development question section. The objective of taking these tests is to demonstrate that you have understood all aspects of the assessment and management of patients requiring surgical intevention. On successful completion you will receive a certificate accredited by both the Royal College of Surgeons of both England and Edinburgh as well as the British Orthopaedic Association.
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