Soyuz Landing Injuries

Perilous Landings by Soyuz Worry NASA, Washington Post

"None of the astronauts was injured, including American Peggy A. Whitson, who was returning after six months of weightlessness on the space station. But the spacecraft lost communication during reentry and remained out of radio contact with Russian mission control for an hour, raising the specter of a crash landing."

South Korea's first astronaut hospitalized with back pain, AP

"Yi So-yeon was taken to a hospital Tuesday due to the pain after she canceled a meeting with President Lee Myung-bak, according to the state-run Korea Aerospace Research Institute, where she works as a bioengineer.
The Science Ministry said in a statement Wednesday that preliminary tests showed Yi suffered a minor injury to her neck muscles and bruised her spinal column."

Internal NASA Documents Give Clues to Scary Soyuz Return Flight, IEEE Spectrum

"Although the technical investigation will take weeks to resolve, NASA and Russian engineers have come to several credible preliminary conclusions. And internal NASA documents, such as "15S Ballistic Entry Outbrief" by George Kafka, chief of the Safety & Mission Assurance Directorate for the ISS program, reveal a plausible idea of what probably happened."

Editor's note: If "none of the astronauts was injured" why did Yi So-Yeon spend a week in the hospital