OPINION
delivered the opinion of the court,
In 2004, the plaintiff, Michael Wilhelm, filed a workers’ compensation claim alleging an injury to his back and left hip. In response, the defendant, Krogers d/b/a Peyton’s Southeastern, denied the claim, asserting that the injuries did not arise out of his employment. At the conclusion of the trial, the trial court awarded the plaintiff a 35% permanent partial disability to the body as a whole. The Special Workers’ Compensation Aрpeals Panel affirmed the judgment. Because, however, the injuries do not qualify as work-related and an earlier workers’ compensation settlement bars recovery, the judgment must be reversed and the case dismissed.
I. Factual and Procedural Background
Michael Wilhelm (“the Plaintiff’), now 38 years old, began working for Krogers, d/b/a/ Peyton’s Southeastern (“the Defendant”) in 1998 as a “case picker,” a position that requires “stepping up and stepping down and lifting heavy cases” for loading into trucks for shipment. Several months later, he ruptured his right Achilles tendon while on the job. As a result of his injury, the Plaintiff developed symptoms of reflex sympathetic dystrophy (“RSD”), a condition that causes him to experience sharp pain and swelling in his lower right extremity. Since the time of the, original injury, the Plaintiff has walked with a pronounced limp.
In a medical deposition related to the 1999 injury, Dr. J. Patterson Stone, the treating physician, testified that the Plaintiffs limp would likely cause left hip and lower back problems in the future. In another deposition related to the earlier injury, the Plaintiff acknowledged that one of his doctors had informed him that he would experience lower back and left hip problems because of his gait.
*125 In 2003, the first claim was settled. The judgment approving the settlement specifically noted that treating physician had made a finding of an 11% permanent partial impairment to the lower extremity. The order further provided that “[i]n an effort to compromise their differences, all parties have agreed upon a lump sum payment ... in full and final settlement of all claims of whatever kind or nature due to the Plaintiff under the [workers’] compensation law of Tennessee.” The agreement directed that the Plaintiff would also further receive any and all reasonable аnd necessary medical treatment in the future which directly and naturally resulted from the 1999 injury.
After the settlement, the Plaintiff was assigned a light duty position in the “tote room,” an area where plastic boxes, weighing approximately three pounds when empty, are filled with orders. The Plaintiff, who could perform his duties while seated, removed old labels from the boxes and then hung them on an overhead conveyor belt for distribution throughout the plant. Hе testified that his duties required him to walk approximately 250-300 yards each day.
After clocking in on May 1, 2004, the Plaintiff felt a “pop” while walking to his work station and then experienced pain in his lower back and left hip area. He was placed in a wheelchair, treated by the company nurse, and then transported to his vehicle. A few days later, the Plaintiff was examined by Dean Coulter, a physical therapist who performs contract work for the Defendant. The Plaintiff complained to the therapist that “this was the second time in three years that [this] has happened to me.” Dr. Steven Williams, a chiropractor, and Drs. Rickey Hutcheson and Elmer Pinzón, orthopaedic physicians, also treated the Plaintiff.
In his workers’ compensation claim for the impairment to his left hip and back, the Plaintiff admitted that his new injuries were a direct result of his 1999 ruptured Achilles. He argued, however, that because the more recent injury affected an entirely separate part of his body, he was entitled to additional permanent partial disability benefits. Because his Achilles rupture arose out of and occurred in the course and scope of his employment with the Defendant, Plaintiff argued that his pain was not idiopathic but the result of his deteriorating condition occurring directly and naturally as a consequence of the original compensable injury. In response, the Defendant contended that the 2004 condition developed as a direct result of the limp caused by the 1999 injury. Because the RSD and the antalgic gait (adopted to deal with pain) were apparent at the time of the prior settlement, the Defendant argued that no additional permanent partial disability should be awarded.
At trial, the Plaintiff introduced the deposition of Dr. Sean Brown, a physiatrist, a physician who combines the specialties of orthopaedics, rheumatology, and neurology into one practice area. After evaluating the Plaintiff in 2005, Dr. Brown determined that walking had caused the back and hip pain the Plaintiff experienced in 2004. He observed that the RSD caused the Plaintiff to “favor his hip, left hip” causing “more weight bearing on it,” explaining that because RSD is a nerve problem often occurring after a traumatic injury, complications develop over time “with the signs showing up in the bone itself.” He described RSD as a very painful condition with no cure. Dr. Brown believed that the hip and lower back condition was separate from the RSD. It was his opinion that the Plaintiffs awkward limp would eventually necessitate left hip replacement surgery. Dr. Brown assessed a 20% im *126 pairment to the left hip, а 6% impairment to the back, and a combined impairment of 14% to the body as a whole.
Dr. McKinley Lundy, who also testified by deposition, examined the Plaintiff in November of 2005 at the request of the Defendant. He also made a diagnosis of RSD, which he described as a “complex regional pain syndrome.” He further determined that the Plaintiff had chronic tro-chanteric bursitis of the left hip, which was more likely than not caused by the abnormal gait. Dr. Lundy fоund no impairment to the Plaintiffs back, but found 7% impairment to the left lower extremity and 3% to the body as a whole. Dr. Lundy recalled that the Plaintiff entered his office on crutches. He later observed him walk unassisted in the parking area for approximately sixty feet.
In 2005, the Defendant discharged the Plaintiff when he left work before the end of his shift without contacting his supervisor. Until that occurrence, the Defendant had allowed the Plaintiff intermittent leave in order to transport his dependent father to medical appointments. Because the Plaintiff had occasionally abused the privilege, however, and had been previously warned against doing so, his employment was terminated after the 2005 incident.
The trial court concluded that the Plaintiffs back injury occurred as he walked to his work-station, that his increased pain was the result of his employment, and that the clаim was, therefore, compensable. The court awarded a 35% vocational impairment to the body as a whole and held that the settlement for the previous injury was for a specific scheduled member, the right lower extremity, and that there was no injury to the left hip and the back at that time. While the trial court described the 2004 injury as “the natural and probable result of his prior compensable on the job injury to his oppositе extremity in 1999,” it also ruled that the Plaintiff was entitled to a second recovery because the settlement on the first claim did not include the anatomical areas covered in the latter claim.
Unlike the trial court, the Special Workers’ Compensation Appeals Panel determined that the Plaintiffs injury was an idiopathic event; however, the Panel concluded that because walking as much as six hundred yards daily was a hazаrd incident to employment, the injury was compensa-ble. The Panel further observed that because the 2004 injury had not manifested itself at the time of the settlement, the prior settlement did not bar the claim.
II. Scope of Review and Applicable Law
In workers’ compensation cases, we review the trial court’s findings of fact de novo accompanied by a presumption of correctness unless the evidence preponderates otherwise. Tenn.Code Ann. § 50-6-225(e)(2) (Supp.2006);
Lay v. Scott County Sheriff’s Dep’t,
When the trial judge has seen and heard the witnesses, especially if issues of credibility and weight to be given
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oral testimony are involved, “considerable deference is afforded the trial court’s findings of fact.”
Long v. Tri-Con Inds., Ltd.,
The workers’ compensation statute in Tennessee permits recovery for injury by accident “arising out of and in the course of employment.” Tenn.Code Ann. § 50-6-103(a) (2005). It is well-established that an injury must both “arise out of’ as well as be “in the course” of employment in order to be compensable under the workers’ compensation statute.
Thornton v. RCA Sen. Co.,
[T]he mere presence of an employee at the place of injury because of his employment will not alone result in the injury being considered as arising out of the employment. If the injury ... resulted from an exposure which is no more or different from that of any other member of the public similarly situated in place and time, it is not compensable.
Sudduth v. Williams,
III. Analysis of the Claim
Because the medical proof in this case established that the cause of the Plaintiffs pain was known to be from his prior RSD condition (as opposed to being of аn unknown etiology), the trial court determined that the injury was not idiopathic. As indicated, the Panel disagreed but ruled that even if the left hip and back problems were idiopathic in nature, “the fact that [the Plaintiff] ... walk[ed] some six hundred yards daily to and from his work station” qualified as an employment hazard “which caused or exacerbated” the injuries.
There are a number of cases helpful to the determination of whether the injury qualifies as idiopathic and, if so, whether the injury is compensable. For example, in
Greeson v. American Lava Corp.,
In
McClain v. Allied-Bendix, Inc.,
In Greeson and its progeny, the employees had pre-existing conditions which affected them ability to walk. No work hazard was present when the employees experienced the subsequent injury. Under these circumstances, this Court and its Panels have consistently ruled that the new injury is not compensable. That is, the injuries would have occurred whether the employee happened to be at work or at another location.
In wоrkers’ compensation cases, “benefits have generally not been allowed where the cause of [an injury] has been found to be due to some diseased or other idiopathic condition personal to the employee, absent some ‘special hazard’ of the employment.”
Sudduth,
[A]n injury due to an idiopathic condition is compensable if an employment hаzard causes or exacerbates the injuries. The accident arises out of employment if there is a causal connection between the conditions under which the work is performed and the resulting injury. This causal link must be between the employment and the injury, rather than between the employment and the idiopathic episode.
Phillips v. A & H Constr. Co.,
Tennessee courts have consistently held that an employee may not recover for an injury occurring while walking unless
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there is an employment hazard, such as a puddle of water or a step, in addition to the injured employee’s ambulation.
See Williams v. Metro. Gov’t of Nashville & Davidson County,
IV. Prior Settlement
The Defendant also submits that the claim is barred because the Plaintiff entered into a “full and final [lump sum] settlement of all claims of whatever kind or nature” as a result of his 1999 injury. As to that issue, the Special Workers’ Compensation Appeals Panel found as follows:
[T]he injuries Plaintiff complains of here had not manifested themselves at the time of the earlier settlement. Settlements of [workers’] compensation claims are construed under the same rules which apply to compromise and settlement agreements generally. Layne v. Tenn. Consol. Coal Co.,206 Tenn. 675 ,337 S.W.2d 237 , 238 (1960) [ (reversing the dismissal of a claim for silicosis where a previous settlement made no mention of that condition, and where the condition was allegedly unknown at the time of the settlement) ]. In this context, we note that release agreements are construed under ordinary contract rules with the primary goal being to effectuate the parties’ intention. Thus, release agreements ordinarily aрply only to claims which are within the parties’ contemplation, and existing at the time of the execution of the agreement. They do not bar claims which arise after the release. We also note that an injury limited to a scheduled member will only entitle a claimant to an award for that particular member, and not for the body as a whole. Thus, Mr. Wilhelm’s prior award for disability to his right lower extremity could not have compensаted him for injuries to his back and left hip. For these reasons, we hold that the previous settlement does not bar Mr. Wilhelm’s claims here.
The Plaintiff argues that at the time he compromised his initial claim, his injury or accompanying disability neither extended to another scheduled member nor to his body as a whole. It is his position that no matter what he knew or did not know at the time of the settlement, he could not have received compensation at that time for any problem that later developed in his left hip. He contends that public policy supports his right to seek compensation for an injury to his back and the hip opposite his initial injury.
As indicated, the trial court concluded that the Plaintiffs 2004 injury was the direct and natural result of the 1999 inju *130 ry. Dr. Stone had testified that the limp from the R.SD condition would likely cause problems to the left hip and back. In our view, the subsequent injury was the naturаl and probable consequence of the first.
Dr. Lundy independently confirmed that the 2004 hip and back injuries were the result of the Plaintiffs prior injury. He testified that the trochanteric bursitis was more likely than not related to the abnormal gait, which was in consequence of “his injury to the [prior] right foot and ankle area.” It was Dr. Brown’s opinion that the prior RSD injury of his right leg caused such an abnormal gait, that alone could have caused his current injuriеs. His impairment rating was based upon the abnormal gait. Even the Plaintiff conceded that “every medical doctor has taken the ... position that [the Plaintiffs] condition is caused by the way he walks and that is directly attributable to the occupational injury he suffered back in 1999.”
Tennessee Code Annotated section 50-6-231 provides “[a]ll amounts paid by the employer and received by the employee or the employee’s dependents, by lump sum payments, shall be final.” Our decision in
Underwood v. Zurich Ins. Co.,
“by entering into lump-sum settlements both parties run a risk of injury. The employee runs the risk that his disability may increase in the future and the employer runs the risk that the disability of the employee may decrease in the future, but both рarties are bound and foreclosed by the entry of a valid decree approving a lump-sum settlement.”
Id.
(quoting
Corby v. Matthews,
The Plaintiff, therefore, is also precluded by the prior settlement from recovering additional benefits. Because the trial court found and we agree that the injury in this matter was “the natural and probable result of his prior compensable on the job injury to his opposite extremity in 1999 which occurred while working for this very emрloyer,” his claim must fail on this additional ground. When the Plaintiff entered into his prior settlement, the altered gait had been an ongoing condition since the 1999 work injury. At the time of the settlement, the parties had every reason to contemplate a further progression of symptoms. The medical testimony is un-contradicted. That the settlement provides for open lifetime medical care for conditions causally related to the 1999 injury is an indication that future complications might have been contemplated. Thus, the Plaintiff is foreclosed from receiving additional vocational disability benefits for the 2004 claim.
V. Conclusion
The hip and back injuries at issue are not compensable because they did not arise out of the Plaintiffs employment. An injury which occurs as an employee walks on a level, obstacle-free, concrete surface is not compеnsable unless a hazard contributes to the injury. Moreover, the lump-sum settlement for the 1999 work-related injury bars recovery for this claim pursuant to Tennessee Code Annotated section 50-6-231. That is, the Plaintiffs complications were the “natural and probable result” of the initial impairment.
The judgment of the trial court is reversed and the cause is dismissed. Costs are assessed to the Plaintiff, Michael Wilhelm, for which execution may issue, if necessary.
