首先说一下“inseam”这个单词，是裤子的内测长，这里近似表示会阴高。
仅仅是近似，一是男人的生殖器，导致穿裤子内侧不可能提到会阴点，二是裤脚不可能接触地面，所以inseam貌似小于会阴高。
不过，会阴高是垂距，而裤子穿在身上不可能拉得紧紧的，所以至少弥补了一些上面的偏差。

首先是维基百科
http://en.wikipedia.org/wiki/Manute_Bol
”Bol possessed exceptionally long limbs (inseam 49 inches (120 cm))“
话说49英尺是124.46 厘米

http://www.highbeam.com/doc/1P1-85907051.html
提及的”white pants with a 48-inch (122-centimeter) inseam“
48英尺是122cm，也就是说，波尔穿过”inseam122cm“的裤子，122/231=0.5281，似乎有点低估波尔的会阴高了。

http://www.insidehoops.com/forum/showthread.php?t=126911
dont some model have 50 inch legs??
Didn*t I specifically address that inseam is NOT the same as your total leg length? Pretty much nobody (or at least anyone alive I bet) has a 50 inch inseam. Heck, if I recall correctly, the 7,7" daddy-long Manute Bol *only* had a 48 inch inseam (which even for his height is very impressive).
有网友问，那些麻豆inseam有122cm？马上有人吐槽，波尔inseam才122cm？
因此，波尔驾驭122cm的裤子是没问题的。

http://books.google.com/books?id=1iqvBAAAQBAJ&pg=PA175&lpg=PA175&dq=Manute+Bol+inseam&source=bl&ots=JVBGDnXlfX&sig=sLcDEOQq4tf_w5IXkedRQBqKL6U&hl=zh-CN&sa=X&ei=qE1cVPHFOZfmoATlg4CIDg&ved=0CDcQ6AEwCTgK

He had a 49-inch inseam
波尔inseam有124.46 厘米，124.46/231=0.5388

http://www.gameuseduniverse.com/vb_forum/showthread.php?t=36032&page=2
The 49 1/4 inch inseam pants of 7*7" Manute Bol

波尔大叔驾驭了49 1/4英寸的inseam，即125.095cm，125.095/231=0.5415

http://sports.ha.com/itm/basketball-collectibles/uniforms/1990-91-manute-bol-game-worn-warm-up-pants-from-the-time-that-he-came-to-the-nba-from-his-native-sudan-manute-bol-was-a-p/a/47101-10221.s


50英寸，127cm，127/231=0.5498

The pants are 150 cm long (59,055 INCHES)
My son (12 years old) help me to take the pic

还有一些网站提到的“Bol*s inseam is 51 inches”，
不过没找到裤子图片。

哈哈，考古贴都出来了。