One of the most striking features of Marfan Syndrome are the skeletal abnormalities: patients are exceptionally tall with exceptionally long extremities. Patients present joint hypermobility due to lax joint ligaments. Typically, such patients can hyperextend their thumb to the wrist. WTF?
Wow. How
Fantastic.
Marfan Syndrome
can do some crazy stuff.
Source: Shoulder Blades