A bursa is a sac positioned where the muscles and tendons pass over the bones in a joint. The sac contains a lubricating fluid which cushions and provides for lubrication of the joint.
Trochanteric Bursitis is experienced as pain in the hip or buttock that can run down the outside of the leg, even down to the knee. Putting stress on the bursa, by moving the hip joint, putting weight on it through walking, running or laying on the effected side can increase the level of pain. There could be some swelling or redness around the area.

By Dr. Johannes Sobotta - Sobotta's Atlas and Text-book of Human Anatomy 1909,

Morton’s Neuroma is experienced as burning, numbness or tingling (nerve pain) in the ball of the foot and extends out towards the toes. It may feel like the client is standing on a small pebble. There is nothing that can be seen from outside the foot, it is just a sensation that is experienced by the individual.
The person often feels relief when removing tight fitting shoes, and stretching or rubbing their feet.
Morton's Neuroma is a swelling of a nerve in the foot, and when pressure is put on the swollen nerve by nearby bones and tendons, this causes further irritation and inflammation of the nerve, and hence pain. It mostly affects middle aged women who wear high heels often.

By Henry Vandyke Carter - Henry Gray (1918) Anatomy of the Human Body

Osgood Schlatter disease can cause an increased sized lump on the shin, just below the knee cap. Pain can be felt in the knee while extending the knee, running or jumping. Anything that puts additional strain on the patella tendon’s anchor (tibial tuberosity) can cause pain.
The pain can last from weeks to months, continuously or intermittently. It can usually be treated effectively with Bowen Therapy, but will also usually stop on it's own after a child’s bones stop growing. 13% of knee pain in teenagers is linked to Osgood – Schlatter disease, and the most common age is between 11-14 year olds.