The Library of Congress >> African & Middle Eastern Reading Room. HOME Foreword Introduction Overview Creative Expression, Culture, and Society African Peoples' Encounters with Others Contemporary African States Note to Researchers List of Sub-Saharan Countries Publications Writings.
At any rate, the list of high-level BJJ (and MMA) fighters who have been slowed down by knee injuries goes on and on: Kron Gracie, Xande Ribeiro, David Avellan, Dustin Hazelett, Bas Rutten, Roger Gracie, Tito Ortiz, Romulo Barral, Marco Ruas, Georges Ste-Pierre, to name a few.
The most common sports injuries occur after repetitive overuse of the spine either through twisting, compression, or flexion. High impact sports such as running, football, or volleyball can often cause low back pain. Sports like golf, in which repetitive twisting is often involved, can also cause low back pain.