<prompt> In a very tall patient with arm span height the thumb projects beyond palm when flexed. This sign is known as?ArachnodactylyFinger signSteinbergs signWrist sign  <response>: Ans. c Steinbergs sign. The image shows Thumb sign seen in Marfan syndrome where the hand is clenched without assistance, the entire thumbnail projects beyond the border of the hand Steinbergs sign Other skeletal findings in Marfans syndrome are 1. Dolichostenomelia long, thin limbs 2. Arm span substantially exceeds the height 1.05 times height. 3. Long, thin fingers arachnodactyly that are hyperextensible. 4. The thumb may be adducted across the narrow palm and may appreciably overlap the 5th finger when encircling the wrist wrist sign 