achondroplasia

check out the images at

http://www.mypacs.net/cgi-bin/repos/mpv3_repo/wrm/repo-view.pl?cx_subject=559876&mode=NOBANNER&bgcolor=BLACK&cx_image_only_mode=on&cx_repo=mpv3_repo&cx_prefsize=medium&cx_from_folder=#row4





Diagnosis:

Most common type of short limbed dwarfism; caused by defect in enchondral bone formation => shortening of tubular bones with normal shaft caliber hereditary: auto-dominant, > 90% sporadic x-ray features: short extremities and ribs v. trunk length "ball-in-socket" epiphyses pelvis: squared iliac wings and narrow sacrosciatic notch ("champagne glass") hands: fingers widely opposed and equal length ("trident hands") skull: enlarged vault and mandible, small f. magnum spine: narrow AP diameter with concave posterior surface and spinal canal only 1/2 normal depth decreased lumbar interpediculate distance hypoplastic ("bullet nose") T-L vertebrae



a very important spot for undergraduates, post graduates and also asked in a lot of entrance exams......