Ms. Thomas first sought treatment for her work injury on August 10, 2005. At that time, she saw her personal physician, Dr. Markus Kryger. Her complaints included low back pain with slight radiation down into the left leg. Dr. Kryger noted "a long history of back pain." In light of his physical exam of Ms. Thomas, Dr. Kryger noted that Ms. Thomas had significant trigger point tenderness. He further noted that Ms. Thomas was having difficulty ambulating and reported a pain level of 10 on a 1-10 pain scale. Based on this examination, Dr. Kryger diagnosed Ms. Thomas with a low back strain, and prescribed bed rest and medication (Tylox and Skelaxin), and a diagnostic study of the lumbar spine. Additionally, Dr. Kryger excused Ms. Thomas from work for five days, and provided a referral to Diane Cornelison, D.O., of the Branson Neurology and Pain Center.
Later, on August 18, 2005, Ms. Thomas presented to Diane L. Cornelison, D.O., who is a neurologist, for evaluation and treatment. At the time of this examination, Ms. Thomas presented with complaints of "bilateral, left greater than right, down the posterior thigh, lateral calf, and the top of the foot with numbness and tingling occasionally on the top of the foot" with associated weakness, secondary to pain. Notably, at the time of this examination, Ms. Thomas identified this pain to be excruciating, being unable to "lay, sit, stand, sleep, or do any of her other activities." In light of her examination and findings, Dr. Cornelison diagnosed Ms.
Thomas with three noted conditions: (1) lumbar facet arthrosis with underlying facet syndrome and mild spondylitic change; (2) obesity; and (3) headache. Additionally, in attributing the lumbar facet arthrosis condition to be caused by the work injury of August 8, 2005, Dr. Cornelison prescribed several modalities of treatment, which included bilateral facet blocks, diagnostic therapeutic epidural and epidurogram, long-acting narcotics, massage therapy, and a TENS unit.
From August 24, 2005, up through September 7, 2005, Ms. Thomas received physical therapy at Skaggs Hospital. Ms. Thomas reported to the therapist that she was experiencing left leg weakness and would constantly stub her toe. The therapist noted that Ms. Thomas walked with an "unusual flat-footed gait on the left." It was further noted that Ms. Thomas had "a very significant left foot drop and left lower extremity weakness." The pain was getting worse so the therapist recommended that Ms. Thomas return to see Dr. Cornelison for follow-up treatment.
In September 2005 Ms. Thomas underwent additional diagnostic studies in the nature of a CT myelogram of the lumbar spine, which evidenced a focal disc protrusion of the lumbar spine at the level of L4-L5, causing mild to moderate central canal stenosis, and a left paracentral hard disk osteophyte at L5-S1, causing a minimal central canal stenosis. Additionally, the S1 nerve rootlet was noted to be slightly displaced dorsally. Later, in light of continuing symptomology, Dr. Cornelison recommended and sought medical authorization under workers' compensation for Ms. Thomas to undergo a discogram, and to be evaluated by a neurosurgeon. Also, Dr. Cornelison recommended an ankle-foot orthosis for the foot drop, weight loss and an exercise program, and an EMG for better evaluation of the underlying pathology.
In September 2005 Dr. Cornelison performed the EMG, which she identified the EMG to be "an abnormal study" consistent with: (1) acute left L5 radiculopathy; (2) no electrical evidence of a left lumbar sacral plexopahty; (3) no electrical evidence of a peripheral polyneuropathy affecting the left lower extremity; and (4) no electrical evidence of a primary myopathic process affecting the left lower extremity. In light of her examination and findings, Dr. Cornelision propounded in pertinent part her conclusions and treatment plan, as follows:
We will proceed with a left L5 transforminal block, neurosurgical evaluation, naproxen 500 mg twice a day, and left ankle-foot orthosis for now. Neurontin 300 mg will be given gradually increasing to 1 in the morning and 2 in the evening hours. Wellbutrin 150 mg may help with the underlying chronic pain as well as the secondary depression related to the chronic pain and financial stress and weight loss. We will proceed with physical therapy and TENS unit will be continued. She should not lift greater than 5 pounds at this time. She will continue Skelaxin 800 mg three times a day and MS-Contin 15 mg twice a day.
While treating with Dr. Cornelison in September 2005 Ms. Thomas told Dr. Cornelison's office that the pain was getting worse, and that she was tripping and falling over things because of her left foot drop. By this time, she was also experiencing numbness and tingling down into the left lower extremity. The impression at this visit was "lumbar spondylosis and stenosis with increased radicular pain. Foot drop on the left." A CT myelogram and EMG studies were ordered.
The CT myelogram was done on September 12, 2005. The radiologist's impression was "focal disc protrusion at L4-5." An EMG nerve conduction study was obtained on September 22, 2005. The impression from the nerve conduction study was "acute left L5 radiculopathy." Based on these findings, Dr. Cornelison recommended a left L5 transforaminal block, neurosurgical consult, pain medication and left ankle-foot orthosis. Ms. Thomas was given a lifting restriction of 5 pounds.
On October 25, 2005, Ms. Thomas presented to Skaggs Community Health Center for treatment. She presented with complaints of having fallen in her tub because of her left foot drop, and had experienced increased pain in her back and into her lower extremities. She was given pain medications and told to follow-up with Dr. Cornelison.
Ms. Thomas went back to Dr. Cornelison's office on December 5, 2005. It was noted that the TENS unit was helping a lot but that she was still experiencing persistent pain in her lower back, as well as experiencing problems with left foot drop. By this time, Dr. Cornelison's office had rewritten a prescription for a neurosurgical consult twice, and the employer and insurer had yet to approve the consult. The impression remained the same, and Dr. Cornelison's office again made a referral for a neurosurgical consult, left ankle orthosis, nerve block, and she was told to continue using the TENS unit.
On January 23, 2006, Ms. Thomas presented for follow-up appointment with Dr. Cornelison. At the time of this appointment, Ms. Thomas continued to present with low back pain and left foot drop. The pain remained unchanged from her previous visit. Dr. Cornelison's office again recommended a neurosurgical consult, pain medication, nerve block, and a new prescription for aqua therapy.
Follow-up appointments with Dr. Cornelison's office occurred on February 14, 2006, and April 11, 2006. The symptoms remained unchanged, resulting in Ms. Thomas receiving the same recommendations, which included a neurosurgical consultation.
On May 30, 2006, Ms. Thomas presented to the emergency room Skaggs Community Hospital, presenting with complaints of having experienced another episode of falling due to her left foot drop. Her primary problem on this visit was an injury to her left thumb. She was given pain medications.
Dr. Cornelison continued to provide follow-up treatment. The employer and insurer, however, declined to provide Ms. Thomas with the medical care recommended by Dr. Cornelison, contending that Ms. Thomas' medical condition and need for such treatment is not causally related to the August 8, 2005 accident. Consequently, on June 3, 2006, Dr. Cornelison directed an opinion letter to the employer and insurer. The letter addresses the employer and insurer's denial of her recommendation for a neurosurgical consult, discogram and epidural steroid injections. In this letter, Dr. Cornelison advised the employer and insurer that Ms. Thomas had developed low back pain, left lower extremity pain, and left foot drop that was directly caused by the work accident on August 8, 2005.
Apparently, Dr. Cornelison was asked by the employer and insurer to address whether there was a causal relationship of the October 2004 motor vehicle accident and Ms. Thomas'
presenting medical condition. In responding to this request, Dr. Cornelison stated: "the correlation between the work related accident and the back pain is obvious by history, examination, and abrupt reoccurrence of the pain related to the history and timing." Dr. Cornelison again recommended a neurosurgical consult, discogram and epidural steroid injections. The employer and insurer declined to accept the recommendations and opinions of Dr. Cornelison, and declined to provide such medical treatment.
Later, having failed to receive a favorable response to her earlier June 5, 2006 letter, Dr. Cornelison authored a second letter, wherein she propounded in pertinent part the following comments and opinions:
We continue to be in a holding pattern. We have recommended several tests to evaluate her continued low back pain. I did dictate a summary letter ....She still continues to suffer a left L5 radicular pain, which is spondylitic most likely in nature related to the facet arthrosis with lateral recess narrowing. However, she has had little relief with injections to point. The radiofrequency rhizotomy did give her relief in Springfield when she suffered a motor vehicle accident. She was essentially pain free until she was involved in a work-related accident in which she had recurrence of the pain but worse and somewhat different than before the motor vehicle accident.
Worker's (sic) compensation was trying to nail down which is the cause of the pain. As discussed previously, I believe both issues are contributing factors. While the underlying x-rays and MRIs conclusively reveal that the patient has canal stenosis at L4-5 most prominent but also L5-S1 with a hard osteophyte at L5-S1. The CT myelogram completed on 9/12/05 is consistent also with indentation of the thecal sac with minimal stenosis at L5-S1 but a hard osteophyte with lateral recess narrowing, as well as L4-L5 with disc protrusion and canal stenosis noted.
On August 21, 2006, Ms. Thomas again presented to the emergency room of Skaggs hospital relating to a slip and fall in her bathtub, which she attributed to the left foot drop and the problems she was having because of the earlier work injury. She received conservative care, which included prescription pain medication and directions to follow-up with her physician, Dr. Cornelison.
Again, on October 9, 2006, Dr. Cornelison authored a report, wherein she addressed the issue of medical causation. In this context, and in pertinent part, Dr. Cornelison propounded the following comments:
She is a female who we follow with a history of lumbar spondylosis with facet arthrosis and exacerbation of the underlying facet arthrosis related to a work-related injury at a nursing home....
The patient is asking once again to clarify if the work-related incident at the nursing home had exacerbated the underlying chronic facet arthrosis and disc osteophyte previously evaluated per MRI. There was also associated underlying disc protrusion. The underlying discogenic pain is most likely related to the disc protrusion, as well as the facet arthrosis both contributing to the underlying pain. The patient was doing well until she had a workrelated incident, which resulted in left L5 discogenic pain with lateral recess narrowing related to facet arthrosis and facet mediated pain.
To a medical certainty, the fall related to the work incident has exacerbated the underlying chronic pathology of both the facet arthrosis and discogenic pain related to disc protrusion. We are still recommending discogram for better clarification and a left L5 transforaminal block. ...
Dr. Cornelison continued to provide follow-up treatment for Ms. Thomas. Ms. Thomas' complaints remained the same, and her condition was not getting any better. During this time, Dr. Cornelison noted that Ms. Thomas was unable to "follow through with any of the tests recommended secondary to denial from workers' compensation." Because of this, Dr. Cornelison could do nothing more than prescribe pain medications to help control the pain. Dr. Cornelison continued to recommend a neurosurgical consult and epidural steroid injections. This treatment was not authorized by the employer and insurer.