A.
Elbow and knee position: suitable for prostate, seminal vesicle and endoscopic examination.
B.
Left lateral decubitus position: applicable to seriously ill, elderly, infirm or female patients
C.
Supine position or lithotomy position: suitable for examination of patients with severe debility or vesicorectal fossa
D.
Squatting position: suitable for examination of rectal prolapse, internal hemorrhoid, rectal polyp, etc.
E.
Elbow and knee position: suitable for seriously ill and elderly patients.