Only testimony necessary to support this award will be reviewed and summarized.
On November 26, 2001, Employee was working on a construction project at a water treatment plant in Boonville, Missouri. Just prior to the Thanksgiving holiday, the employer had poured concrete and on November 26 the employee and some co-workers were taking apart the wooden forms which had been holding the concrete while it set up or hardened. Employee was on top of a wall, approximately 17 feet in the air, when he reached over and out to pick up some $2 \times 4$ 's to hand down to a co-worker. He felt an immediate onset of pain in his lower back and called over a co-worker to assist him in getting down off the wall. The incident was reported to the supervisor and he was taken to the Boone County Hospital emergency room.
Employee presented to the emergency room with complaints of pain in his left lower back, with pain radiating down into his left leg. He was referred to Dr. Tate who treated him from November 30, 2001, to January 16, 2002. Dr. Tate recommended physical therapy, ordered an MRI on December 28, 2001, and an epidural steroid injection on January 11, 2002. Due to continuing back pain with radiation, Dr. Tate then referred employee to Dr. Blake Rodgers for an orthopedic consultation. Following review of x-rays and the MRI, Dr. Rodgers concluded the findings on the MRI were more impressive than the report indicated. He noted the disk herniation was bigger, central, and that it did contact the neural elements, even though the radiologist did not think so. The doctor recommended surgery and discussed the procedures for a diskectomy and an in situ fusion. He also explained to the employee that a certain percentage of people did not improve following surgery and might require further surgery in the future, perhaps in the form of a revision to an instrumented fusion (Employer/Insurer Exhibit 2, tab 3 report dated 2-16-02). In a letter to the insurance company dated October 24, 2003, in response to a request for a disability rating, Dr. Rodgers noted that the in situ fusion was an attempt to avoid any type of large instrumented fusion.
On February 22, 2002, Dr. Rodgers performed an L5-S1 diskectomy with in situ fusion using left iliac crest marrow
harvest (Employee's Exhibit A, St. Mary's Health Center Records). The leg pain seemed to improve following the surgery, but no improvement was noted with respect to either the back pain or the right foot numbness. Employee attended follow-up visits with Dr. Rodgers on March 7, April 9, May 30, and August 27, 2002. Dr. Rodgers noted employee really was not doing much better and that the doctor "was not quite sure what to make of that," noting at the final visit on August 27, 2002, employee clearly was still having significant limitations. At that visit, employee also complained of shoulder pain, which the doctor suggested should be discussed with the insurance company. Even though there had been little improvement following the back surgery, Dr. Rodgers released the employee at MMI as of August 27, 2002.
Employee then was referred to Dr. Garth Russell for shoulder complaints that had developed since the injury. Dr. Russell opined that the left shoulder problems were secondary to the use of a cane following the injury and back surgery. Employee was then referred to Dr. Snyder who, following injections and physical therapy, performed a closed manipulation and arthroscopy of the left shoulder on March 4, 2003. After little improvement, Dr. Snyder again performed a closed manipulation with a cortisone injection on October 3, 2003. Again little improvement was noted and Dr. Snyder referred the employee to Dr. Spezia for a second opinion.
Dr. Spezia saw employee on February 25, 2004, and recommended additional surgery to the shoulder. Employer/insurer authorized the surgery and on March 25, 2004, Dr. Spezia performed a manipulation with arthroscopy and debridement. Following another course of physical therapy, the doctor released employee at MMI for the left shoulder on May 12, 2004, at which time treatment and benefits ceased.
Employee continued to experience ongoing problems with back pain and right foot numbness following his release from treatment for the back in August 2002 and returned to see Dr. Rodgers on August 17, 2004. Dr. Rodgers recommended additional surgery to the back and on September 29, 2004, performed a revision surgery, this time fusing L4-S1 with cages and rods. Dr. Rodgers assessed a 10 % permanent partial disability to the body as a whole following the first back surgery. On September 1, 2005, the doctor increased that to 12 % permanent partial disability to the body as a whole and imposed permanent restrictions of not lifting more than 10 pounds, frequent sitting and no significant bending or lifting. However, the doctor indicated that he could not with a reasonable degree of medical certainty say that the second back surgery was directly related to the November 2001 injury. Employee continues to follow up annually with Dr. Rodger