Manitoba’s Appeal Commission has accepted a worker’s Chronic Regional Pain Syndrome diagnosis as related to a workplace accident, finding that early clinical observations and repeated diagnoses outweighed a contrary WCB opinion based on an incomplete examination.
In Decision 53/26, signed August 13, 2026, the commission granted the worker’s appeal and accepted CRPS as part of the compensable injury. The ruling determines the diagnosis and its connection to the accident; it does not set a new benefit amount or establish the worker’s current treatment or payment status.
The panel’s reasoning turned on the medical evidence as a whole, not simply on symptoms appearing after an accident. It considered the nature of the accepted injury, the emergence of symptoms during recovery, observable findings and diagnoses by several treating professionals. It also held that a pre-existing condition was not, by itself, a bar to accepting a subsequent work-related condition.
A diagnosis question left open by an earlier appeal
The WCB had accepted the worker’s claim for a significant wrist injury sustained in September 2021 that required surgery. During recovery, the treating orthopedic surgeon identified early signs of CRPS and later made a formal diagnosis. Other treating professionals also supported the diagnosis.
A WCB physiatrist examined the worker in May 2022 but could not complete the assessment of the affected limb because the worker could not tolerate movement or contact. The WCB subsequently concluded that the worker’s continuing difficulties were not related to the accident and ended benefit entitlement after November 2, 2022. Additional pain-clinic information did not change that position.
In May 2023, Review Office upheld the benefit decision, relying substantially on the physiatrist’s opinion that CRPS was not supported. It attributed the continuing difficulties to a pre-existing condition and the worker’s non-use of the affected limb.
The August 2026 reasons recount an earlier successful benefits appeal, Decision 110/24, dated December 9, 2024. That panel had not decided which diagnosis was accepted because the question was not before it. The file returned to Compensation Services for review of benefit entitlement. The present account of that earlier proceeding comes from Decision 53/26, which addressed the distinct diagnosis issue.
The worker appealed that issue in December 2025, and the commission held a hearing on June 23, 2026. The worker’s representative relied on diagnoses from two orthopedic surgeons and two anesthesiologists and argued that the Budapest diagnostic criteria had been correctly applied. The employer did not participate in this appeal, although it had supported the WCB’s position during the earlier Review Office process.
Causation required proof on the full record
Under section 4(1) of The Workers Compensation Act, compensation is tied to personal injury by accident arising out of and in the course of employment. The panel’s task was to decide, on a balance of probabilities, whether the workplace accident caused the CRPS condition. The original workplace injury was already accepted; the dispute concerned the additional diagnosis and its causal connection.
The panel found a connection both in timing and in clinical evidence. Early symptoms appeared during recovery from the fracture and surgery, in the same injured limb, rather than arising years later in unrelated circumstances. An orthopedic surgeon observed swelling and restricted movement about a month after the accident, then formally diagnosed CRPS. A specialist’s later assessment added support.
Importantly, the panel did not treat the diagnosis as based only on the worker’s reported pain. Healthcare professionals documented observable changes and reduced function at different stages of recovery. Multiple practitioners reached the diagnosis. Those features made the evidence more persuasive than chronology alone.
The panel nevertheless considered the WCB physiatrist’s contrary opinion. It did not find that opinion sufficient to outweigh the combined evidence supporting CRPS. The May 2022 assessment had not produced a complete examination of the affected limb, and the inability to finish it arose from the worker’s intolerance of movement or contact.
That limitation mattered to what could reasonably be inferred. The absence of findings from a completed clinical examination could not be treated as definitive proof that the worker did not have CRPS. The assessment also occurred after the surgeon had identified early symptoms and after a specialist had documented findings consistent with the diagnosis.
The physiatrist later reviewed additional pain-clinic evidence without changing the WCB opinion. The panel held that this information had to be considered alongside the earlier observations and treating professionals’ opinions, rather than in isolation. Taken together, the evidence showed a consistent history involving the limb injured at work.
Pre-existing condition did not resolve the issue
WCB Policy 44.10.20.10 addresses pre-existing conditions that may contribute to the severity of a workplace injury or significantly prolong recovery. As summarized in the reasons, the policy distinguishes temporary worsening, or aggravation, from permanent worsening, or enhancement, caused by an injury.
The existence of such a condition did not end the causation inquiry. The panel asked whether the accident materially caused or contributed to the condition for which acceptance was sought. On this record, it found a direct connection between the accepted injury and the development of CRPS, supported by the early findings and subsequent diagnoses.
Presiding officer R. Lemieux Howard and commissioners M. Kernaghan and R. Hambley found the more-likely-than-not threshold satisfied and granted the appeal. The conclusion was expressly based on the information available at the hearing. It accepts the diagnosis and work-related causation without deciding a fresh monetary entitlement or making a general rule that every post-injury pain condition is compensable.
