Chevron Osteotomy (for Hallux Valgus)
Subscribe to get full access to this operation and the extensive Foot Surgery Atlas.
Learn the Chevron Osteotomy (for Hallux Valgus) surgical technique with step by step instructions on OrthOracle. Our e-learning platform contains high resolution images and a certified CME of the Chevron Osteotomy (for Hallux Valgus) surgical procedure.
Patients with symptomatic Hallux Valgus will have pain predominantly from the medial eminence (though of course not all patients are symptomatic). Pain is classically when in shoe-wear (or more specifically tighter fitting shoe-wear). Surgery in the majority of cases is indicated for pain.
With regards to radiographic criteria a mild Hallux Valgus could be said to be a Hallux Valgus angle (the degree of lateral angulation of the hallux relative to the first ray ) of less than 2o degrees and an inter-metatarsal (IM) angle of less than 11 degrees. A moderate deformity displays a Hallux Valgus angle of 20 to 40 degrees and an Inter-metatarsal angle of 11-18 degrees. A severe deformity a Hallux Valgus angle in excess of 4o degrees and inter-metatarsal angle over 18 degrees.
The Chevron osteotomy is a distal diaphyseal osteotomy which is used for correcting smaller Hallux Valgus deformities and is most successfully used to correct IM angles of less than 15 degrees.
There is debate about the risk of avascular necrosis if the operation is combined with a formal open lateral release. A more limited transarticular lateral soft tissue release can be performed through the medial joint approach and this is usually required to mobilise the osteotomy adequately.
Author:Mark Herron FRCS.
Institution: The Wellington Hospital, London, UK.
- 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.
Our content is designed for both Surgeons in independent practice and Surgeons in training.