List of musculoskeletal disorders. Ankylosing Spondylitis. Ankylosing Spondylitis is a chronic, progressive autoimmune disease that involves the joints and the spine. Although some people experience symptoms in many parts of the body, the main site of this disorder is the lower back.
Location of Saint Kitts and Nevis. The islands of St. Kitts and Nevis are positioned in both the northern and western hemispheres. Located in the eastern Caribbean, the islands are surrounded by the Caribbean Sea and the Atlantic Ocean.
The island is one of the Leeward Islands in the Lesser Antilles. It is situated about 2,100 km (1,300 mi) southeast of Miami, Florida. The land area of St. Kitts is about 168 km2 (65 sq mi), being approximately 29 km (18 mi) long and on average about 8 km (5.0 mi) across.