Decision #116/09 - Type: Workers Compensation
Preamble
The worker sustained a right shoulder injury in a work related accident in January 2006. The claim for compensation was accepted and benefits were paid. The worker is currently appealing the decision made by Review Office that her ongoing difficulties were not related to the January 2006 accident. The worker disagreed with the decision and an appeal was filed with the Appeal Commission through the Worker Advisor Office. A hearing was held on July 15, 2009 to consider the matter.Issue
Whether or not the worker is entitled to wage loss benefits and medical treatment after May 2, 2007.Decision
That the worker is entitled to wage loss benefits and medical treatment after May 2, 2007.Decision: Unanimous
Background
The worker filed a claim with the WCB for a right shoulder injury suffered on January 31, 2006. She attributed the injury to her work duties as a food service worker which required repetitive reaching, cutting, and lifting. The worker also attributed her shoulder condition to a cooler door that did not close properly. The claim for compensation was accepted based on a diagnosis of right rotator cuff tendonitis and benefits were paid to the worker.
Ongoing medical information showed that the worker developed numbness and tingling in her right hand and it was felt that she may have developed a frozen shoulder.
Following a WCB call in examination on March 14, 2006, a WCB medical advisor reported that the worker had areas of myofascial pain in the right trapezius, levator scapulae, infraspinatus and rhomboids. Arrangements were made for the worker to see a physical medicine and rehabilitation specialist (“physiatrist”) for treatment. Work restrictions were outlined for a 4 to 6 week period.
On May 14, 2006, the physiatrist’s clinical impression of the worker was a right C7 radiculopathy. The rotator cuff assessment was normal. An MRI of the cervical spine was arranged. The MRI examination dated August 6, 2006 showed minor degenerative changes in the cervical spine.
On August 11, 2006, the physiatrist reported that a right subacromial injection did not change the worker’s symptoms. A right shoulder MRI was suggested, given the overlap between the cervical and shoulder girdle presentations. On October 12, 2006, the MRI of the right shoulder was read as being a normal examination, and no rotator cuff abnormalities were identified.
In a follow up report dated November 19, 2006, the physiatrist reported that the worker’s symptoms remained unchanged, with a strong neuropathic quality.
Due to the lack of objective findings, a second WCB call in examination was held on January 17, 2007. The medical advisor reported that the worker had a large degree of non-organic complaints with some degree of exaggeration of symptoms and abnormal pain presentation. The clinical examination was limited because of pain on superficial palpation and considerable voluntary resistance to attempts to rotate the right shoulder. The medical advisor noted slight concerns about the possibility of an ulnar nerve involvement, and nerve conduction studies were therefore recommended. Nerve conduction studies were undertaken on January 22, 2007. The tests did not show evidence of any neuropathy in the right upper extremity.
On March 1, 2007, the worker was interviewed at the WCB’s Pain Management Unit [“PMU”]. The PMU determined on March 15, 2007, that the worker did not meet the criteria for a Chronic Pain Syndrome as per WCB criteria, as the disability was not proportional in all areas of functioning. The PMU also determined that the worker did not appear to be experiencing an Axis I or Axis II disorder.
On March 20, 2007, a WCB medical advisor reviewed a video surveillance of the worker’s activities. He stated,
“The claimant was identified outside her own house, cleaning her car with the left arm. The main video showed the claimant in a parking lot, pushing her trolley with two arms. The claimant was able to transfer a basket of groceries with two hands from the trolley into the back of her car. She also used the right arm to transfer small items into the back of the car. On several occasions while watching the claimant clean her car with her left arm, she held her right arm in an unnatural flexed position. However, she was able to use the arm quite effectively in transferring the groceries and also in pushing the grocery trolley.
Based on these observations and with the cumulative evidence of the examination notes and also the interview with the CPU [chronic pain unit], it is my opinion this claimant has now recovered from any effects of the compensable injury and can return to work with no restrictions.”
A Chiropractor’s First Report dated April 19, 2007 diagnosed the worker as having a thoracic outlet syndrome with cervical facet dysfunction.
On April 25, 2007, the worker was advised that the WCB was unable to accept further responsibility for wage loss and medical treatment beyond May 2, 2007, as it was felt that she had recovered from the injury she sustained on January 31, 2006. The decision was based mainly on the March 20, 2007 opinion of the WCB medical advisor. On June 14, 2007, the worker appealed the decision and the case was referred to Review Office for consideration.
On June 28, 2007, Review Office determined that the worker was not entitled to wage loss benefits or medical treatment after May 2, 2007. Review Office reviewed the file evidence which included the mechanism of injury, laboratory tests, treatment received, and the PMU report. Based on the absence of clinical and diagnostic findings, Review Office was unable to explain the worker’s ongoing symptoms and loss of earning capacity in relation to her work injury. It concluded that the worker was not entitled to payment of wage loss benefits or medical treatment beyond May 2, 2007.
On January 6, 2009, the Worker Advisor Office asked Review Office to reconsider its June 28, 2007 decision based an opinion expressed by an occupational health physician on November 29, 2008. The worker advisor stated, “[the occupational health physician] has provided clinical signs of loss of function within his report. He concludes that the condition is best described as a muscular strain from heavy repetitive duties performed in 2006 that were not appropriately treated. Given this, the conclusion is that the claimant has not recovered and we suggest that wage loss benefits should be reinstated effective May 3, 2007 and further treatments be provided to the claimant…”.
The Worker Advisor Office also provided Review Office with a letter from a neurologist dated November 15, 2007. The neurologist commented that the worker’s presentation was consistent with predominantly a musculoskeletal source of discomfort, with probably some myofascial symptoms extension. There were no objective clinical features to suggest a significant neuropathic or neurologic condition/lesion.
Review Office asked a WCB medical consultant to review the file and answer specific questions regarding the compensable diagnosis, current diagnosis, etc. His response to Review Office is dated February 9, 2009.
In a decision dated February 26, 2009, Review Office upheld its previous decision that the worker was not entitled to wage loss benefits or medical treatment beyond May 2, 2007. Review Office accepted the February 9, 2009 opinion of the WCB medical consultant that the diagnosis of the compensable injury was right rotator cuff tendonitis. Given that there were no specific pathoanatomic changes in the worker’s right shoulder or cervical spine, the consultant opined that the current diagnosis was a muscular strain of the right arm, the right trapezium, and the right rotator cuff. There was insufficient medical evidence to support that the worker’s right forearm difficulties were related to her right shoulder compensable injury.
Review Office also accepted the WCB medical consultant’s opinion that there was insufficient medical evidence to support that the worker was not capable of performing her regular job duties. It noted that the occupational health specialist indicated that 70% of the worker’s pain and impairment was below the elbow. Review Office found that there was insufficient evidence to support the need for any further treatment in relation to the compensable right shoulder injury of January 31, 2006.
On April 3, 2009, the Worker Advisor Office appealed Review Office’s decision to the Appeal Commission and a hearing was arranged.
Following the hearing held on July 15, 2009, the appeal panel requested additional medical information from the worker’s treating chiropractor and from a physiotherapist. The additional information was later received and was forwarded to the interested parties for comment. On October 8, 2009, the panel met further to discuss the case and rendered its final decision.
Reasons
Applicable Legislation:
The issue before the panel is the worker’s ongoing entitlement to wage loss and medical aid benefits beyond May 2, 2007. In our adjudication of this appeal, the panel is bound by The Workers Compensation Act (the “Act”), regulations, and policies established by the WCB’s Board of Directors.
Subsection 39(2) of the Act provides that a worker is entitled to wage loss benefits as long as she continues to have a loss of earning capacity that is causally related to her compensable injury. Subsection 27 (1) provides that medical aid shall be provided to the worker following a compensable injury as long as required, to treat the effects of the compensable injury.
The worker’s position:
The worker and her worker advisor put forward the position that she had not recovered from her January 2006 workplace injury, at the time that her benefits were terminated on May 2, 2007. The worker provided evidence as to her general kitchen job duties with the employer and how she became hurt while on the job. She attributed her work injury to the repetitive nature of a number of her job duties, rather than a specific incident. The advisor suggested that the worker was first provided with a diagnosis of right rotator cuff tendonitis following the injury, and that a recent report (in November 2008) of an occupational health physician suggested that the worker had a work-related cumulative injury. His opinion was that the worker suffered a muscular injury of a number of structures around the shoulder that has resulted in altered shoulder function, hand grip, and forearm strength. The worker advisor referenced a number of medical reports covering the time period of the claim and beyond, stating that the worker’s reported symptoms were consistent throughout, and extended beyond the termination date of the worker’s claim.
As to the video surveillance of the worker in early 2007, the worker advisor suggested that the duties described did not show an individual capable of her regular pre-accident kitchen duties. Accordingly, their position was that the worker was entitled to both wage loss benefits and medical aid benefits beyond the termination date of her benefits on May 2, 2007.
Analysis:
For the worker’s appeal to be successful, we would have to find that the worker’s reported right shoulder difficulties after May 2, 2007, continued to be causally related to the workplace injury, such that medical aid was still required, and that the worker continued to suffer a loss of earning capacity after that date. The panel is able to make these findings, on a balance of probabilities, and, in particular, finds that the worker continued to have ongoing muscular/myofascial pain and loss of function in the right upper extremity. The panel further finds that the worker was unable to return to her regular kitchen duties as of May 2, 2007, and accordingly suffered a loss of earning capacity as well.
In coming to our decision, the panel relied upon the following evidence:
- As noted in the background, the worker was seen and examined by a number of physicians and specialists following her January 31, 2006 workplace injury through to 2009. Over that period of time, a number of medical diagnoses were proposed, tested, and ultimately rejected. These differential diagnoses started with rotator cuff tendinitis, and later evolved to include: frozen shoulder, a right C7 cervical radiculopathy, suspicions of a neuropathic source, a possible ulnar nerve involvement, chronic pain syndrome, thoracic outlet syndrome with cervical facet dysfunction, myofascial pain in a number of muscles in the right shoulder girdle area, and a muscle strain which had become chronic due to the lack of treatment.
- The medical diagnostic picture was further clouded by medical reports also indicating non-organic complaints, exaggeration of symptoms by the worker, and abnormal pain presentation.
- Notwithstanding the inability of her treating physicians to confirm a specific diagnosis, it is apparent to the panel that the worker reported - and the physicians found - a continuity of right upper extremity symptoms. In February 2009, when this matter was being considered by Review Office, its sports medicine consultant reviewed the file in its entirety. His impression was that the worker’s current diagnosis at the time of his review was a muscular strain of the right arm, the right trapezium, and the right rotator cuff, and that this diagnosis was causally related to the workplace injury of January 2006. However, he felt that there was insufficient medical evidence to support that the worker’s right forearm difficulties were related to her right shoulder compensable injury.
- During the hearing, the panel heard evidence regarding additional treatment provided to the worker following the termination of her claim. Following the hearing, the panel obtained medical reports from a chiropractor and physiotherapist who had treated the worker. The panel notes that the chiropractor treated the worker steadily from April 19, 2007 to June 26, 2007, and then once on September 23, 2008. The earlier group of treatments cover the period preceding and following the May 2, 2007 determination that the worker had recovered from her workplace injury. The chiropractor’s report of September 11, 2009 notes a number of changing diagnoses, none of which were treated successfully. He does note, however, that the worker “complained consistently of right sided neck, shoulder, arm, and hand/pain weakness. She indicated that the pain interfered with her ability to perform normal (sic).” He goes on to state that he did not find any demonstrable improvement in the worker’s condition during the period he treated her. The chiropractor also states that during his period of sustained treatment (to June 26, 2007), the worker was not in any condition to return to her job performing the same or similar tasks.
- The physiotherapist’s report to the panel, dated September 20, 2009, details treatment provided to the worker starting July 10, 2009. Her treatment targeted significant postural changes involving the worker’s right shoulder, and notes similar pain complaints to those noted throughout the claim, namely burning pain from the shoulder down to the elbow and down to the forearm, and into the hand and two fingers. The physiotherapist notes that treatment targeting muscles in the shoulder girdle has increased range of motion, reduction in intensity of pain, and improvement in her condition.
- It is the panel’s view that the recent reports essentially corroborate a continuity of right upper extremity symptoms beyond May 2007, the later findings of the occupational health physician in November 2008, and the conclusions reached by the WCB sports medicine consultant in February 2009. Based on our review and consideration of the medical information on the file, the panel therefore agrees with and adopts the diagnoses proposed by the WCB’s sports medicine consultant to Review Office in his report of February 2009. He notes the continuity of symptoms in the worker’s right shoulder and describes the worker as having a repetitive motion disorder. He accepts the occupational health physician’s diagnosis of a muscular strain of the right arm, the right trapezius, right rotator cuff and right forearm extensors. He notes there is no evidence that these conditions were present prior to the workplace claim date, and concludes there is a probable causal relationship between the worker’s ongoing (post 2007) signs and symptoms and her compensable injury. It is therefore the panel’s finding that the worker’s compensable injury extended beyond May 2, 2007, thus entitling the worker to appropriate medical aid benefits beyond that date.
- As to the worker’s work capabilities, the panel notes that the worker’s treating chiropractor found her unable to perform her regular work duties during his treatment regimen which stopped on June 26, 2007, only as a consequence of the termination of the worker’s claim (and not because of recovery). While the earlier adjudications of this file place some reliance on the video surveillance of the worker in terminating her benefits, the panel does not find the video surveillance to be determinative of the matter of wage loss entitlement. The panel notes that the adjudication of this file has been confounded to some extent by concerns over symptom magnification and abnormal pain behaviours; however, there is, at the root of this claim, a compensable injury that continued beyond May 2, 2007 and continues to be apparent in the physiotherapist’s treatments in mid-2009. The panel is of the view that the surveillance does show the worker doing things beyond what she had advised medical practitioners, but it does not demonstrate or prove a capacity to work her regular kitchen duties with her employer. The panel is not prepared, on the basis of this evidence, to find that the worker was able to perform her pre-accident duties beyond May 2, 2007. In particular, the panel finds that the surveillance doesn't provide insight into the worker's ability to resume pre-accident employment on an unrestricted full time basis.
- The panel relies on the chiropractor’s findings and opinions as to the worker’s work capacity status in mid-2007, and on similar findings by the occupational health physician who examined her in November 2008 and the physiotherapist who provided treatment in 2009. As an aside, the panel notes that the February 9, 2009 WCB sports medicine consultant report suggests he is unable to establish restrictions regarding the worker’s occupational disability, but his assessment is not based on “hard” findings from the medical reports he has reviewed. His analysis in fact simply demonstrates a number of deficiencies in the reports he has read, and suggests that “a more definitive answer to this question might be provided by comparing the results of a functional capacity evaluation with a job demands analysis of her current occupation.” In the panel’s view, his assessment does not contradict the reports just listed; it is ultimately neutral with respect to the worker’s capabilities of performing work.
Based on this analysis, the panel finds on a balance of probabilities that the worker continued to suffer the effects of her compensable injury to her right upper extremity and in particular a muscular strain-type injury to the right shoulder area and is entitled to wage loss and medical aid benefits beyond May 2, 2007. Accordingly, the worker’s appeal is accepted.
Panel Members
L. Choy, Presiding OfficerA. Finkel, Commissioner
P. Walker, Commissioner
Recording Secretary, B. Kosc
L. Choy - Presiding Officer
Signed at Winnipeg this 4th day of December, 2009