Hemarthrosis is the medical term for bleeding in a joint. When you have pain and swelling in a single joint (monoarticular), hemarthrosis is a common cause. It is a cause for concern not only because of the pain, but because prolonged blood exposure can damage the cartilage.
Injury to the peripheral nerve (nerves outside of the brain and spinal cord) may result from blunt force, fractures, crush injuries, stretch, penetrating or cut injuries. The nerves of the upper limb are the most commonly injured. The healing process from nerve injury can take from a few weeks to a few months.
Nerve Injury and Recovery. A nerve injury can result in weakness or paralysis of a muscle or in numbness of an area of skin. In some people, it also causes pain. To understand nerve injury and recovery, it is important to understand the different types of nerve injury. The type of nerve injury will determine the type of treatment.