Video Journal Club – AIS Classifications

Dr Kshitij Chaudhary is a consultant spine surgeon at the PD Hinduja Hospital, Mahim, Mumbai.

In this video he discusses two of classic papers on Adolescent idiopathic scoliosis.

King, H. A., Moe, J. H., Bradford, D. S. & Winter, R. B. The selection of fusion levels in thoracic idiopathic scoliosis. The Journal of Bone and Joint Surgery: American Volume 65, 1302 1313 (1983)

Lenke, L. G. et al. Adolescent Idiopathic Scoliosis: A New Classification to Determine Extent of Spinal Arthrodesis. JBJS Am 83, 1169–1181 (2001).

Interview with Dr John Lonstein

This interview was part of the 2021 virtual annual conference of the Association of Spine Surgeons of India.

In this interview, I talk to one of the legends of spinal deformity surgery, Dr. John Lonstein from the famous Twin Cities Spine Center, Minneapolis, and Gillette Children’s hospital, Saint Paul, USA.

How to measure Cobb angle on Xray Films using your iPhone

Step 1: Identify and mark the end vertebrae

Step 2: Open Measure App on Iphone. https://apps.apple.com/us/app/measure/id1383426740

Step 3: There are two options on the bottom screen. “Measure” and “Level”. Choose “Level”. This brings up the inclinometer.

Step 4: Place the iPhone’s edge along the line drawn on the lower end vertebra.

Step 5: Touch the iPhone’s screen somewhere in the middle. The degrees recalibrate to Zero.

Step 6: Now move the iPhone’s edge to the line drawn for the upper-end vertebra.

Step 7: The reading on the iPhone will give you the Cobb angle.

Selecting posterior fusion levels in AIS

I gave this talk at the POSICON 2019 in Mumbai as a part of the instructional course on Adolescent idiopathic scoliosis. I discuss the Lenke classification and how it helps decide fusion levels. The video also includes the concept of last touched vertebra and how it helps to decide the LIV.