41. The blood clot takes about 8 weeks to become fibrous tissue and it takes 4 months to become fibrocartilage. 42. Hernias are caused by a disruption or opening in the fascia, or fibrous tissue , which forms the abdominal wall. 43. Surgeons successfully removed fibrous tissue from the lining of his abdominal cavity caused by an operation several years ago. 44. The term bar refers to the abnormal bar of bone or fibrous tissue between the two bones. 45. When the periosteum ( fibrous tissue surrounding bone ) peels off as well this is called an ALPSA lesion. 46. Because the muscle cells are replaced with fibrous tissue , the heart loses its ability to contract, compromising heart function. 47. A later phase of the disease is characterized by the replacement of normal bone marrow with highly vascular fibrous tissue . 48. In the aftermath of such a heart infection, the organ loses active muscle cells, which are replaced with fibrous tissue . 49. Because the nonfunctioning fibers crowd out active liver tissue, liver function decreases gradually as the amount of fibrous tissue increases. 50. I separated layers of muscle and tendon down to the bag of ligament and fibrous tissue that holds the joint together.