Oxygen, is a lung friendly chemical element discovered by three researchers, working independently in the 1770's in England, Sweden, and France. Abundant in the earth's atmosphere for 2.3-2.4 billion years, air is typically 21% oxygen, required by humans for proper cell metabolism. Scientists contend that during a period of geologic history oxygen constituted 35% of the earth's atmosphere. Such a high concentration of oxygen was too high to sustain life on earth as we know it. 21% is optimal for sustaining life on our planet.
Motivated by a desire to explain variations in patients' recovering from knee surgery and even variations in recovery from the same patient where both knees were replaced, in the Fall of 2013, knee surgeons of the University Hospital in Belgium thought they had discovered a new knee ligament.
The US government is helping surgeons by approving the manufacture and use of a new substance that will add to the arsenal of healing options for patients with cartilage damage and defect. After a two year clinical trial and three year follow up of 144 patients, MACi is pipelined for use by orthopedic surgeons.
Julio Jones, one of the most talented receivers in the league, left the game in the middle of the second quarter and sat out the second half of the game against the Buffalo Bills after what was described as a hip flexor injury. There was no clear video of the injury, and he seems to not have been injured with contact.
At mid- and long-term follow-up, clinical and radiographic results improved among young patients with either isolated retroversion or retroversion and hip dysplasia who underwent reverse periacetabular osteotomy for treatment of femoroacetabular impingement.