Cervical Sprain and Strain Cervical sprain or cervical strain is a neck injury, which results in stiffness, pain, weakness, and muscle spasm. A sprain is an injury to the ligament, a tissue connecting bone to bone or a joint capsule providing joint stability.
Retaining Wall Costs. The cost of a retaining wall depends on the material chosen, the overall height of the wall and the length of the wall. Wood retaining walls start at $15 per square foot, while concrete retaining walls start at $20 per square foot.
The only drawback to this type of retaining wall is the lack of lateral strength it has. If too much water or extra pressure is exerted on the wall, it could fail in spots. Expect to pay between $15 and $30 per square foot of wall, depending on the style and strength of block you choose.