“Eman really knows his stuff and we were very pleased with our end result.”
Myretta & Thomas Knorr
✦ Board-Certified Specialist in Workers’ Compensation Law — State Bar of California ✦
Back injuries are the #1 workers’ comp claim in California — and among the most undervalued.
By Eman Yazdchi, Esq. · Certified Specialist in Workers' Compensation Law
Back injuries dominate workers' compensation filings in Lancaster for a reason the local economy makes obvious. Solar panel installers along the Avenue I corridor lift, bend, and twist across uneven desert terrain for 10-hour shifts in triple-digit heat. BYD Motors assembly workers on Avenue M perform repetitive tasks in fixed postures that compress lumbar discs over months and years. Construction laborers on the east side haul materials up ladders and across scaffolding on residential build sites. Nurses and aides at Antelope Valley Hospital on 25th Street West transfer patients who outweigh them multiple times per shift. Every one of these Lancaster jobs attacks the spine differently, and every one produces the back injury claims that insurers fight hardest.
The difficulty with Lancaster back injury claims is not proving that you hurt — it is proving the full extent of your permanent disability and defeating the insurer's attempts to reduce your rating through apportionment. A herniated disc at L4-L5 may sound like a straightforward diagnosis, but the difference between a 15% permanent disability rating and a 40% rating can mean over $80,000 in additional compensation. That gap comes down to which rating method the evaluator uses, whether the insurer successfully apportions part of your disability to age or genetics, and how effectively your attorney challenges those tactics.
From our office on Avenue M-14 — a 15-minute drive south of Lancaster on the 14 — we handle more back injury claims from Antelope Valley workers than any other injury type. We know which medical evaluators provide thorough, evidence-based spinal ratings. We know how to counter the apportionment arguments that Lancaster insurers rely on. And we fight for the maximum disability rating your back condition justifies under the AMA Guides.
California uses the AMA Guides to the Evaluation of Permanent Impairment, 5th Edition to calculate permanent disability from back injuries. The rating process is technically complex and directly determines your compensation. Here is what Lancaster workers need to understand about their back injury claim.
The AMA Guides 5th Edition provides two methods for rating spinal impairment, and which one is used can change your award by tens of thousands of dollars. The Diagnosis-Related Estimates (DRE) method is the default approach, categorizing injuries into five severity levels based on clinical findings — radiculopathy, loss of motion segment integrity, and surgical history. The Range of Motion (ROM) method measures actual spinal flexibility and is used when DRE does not adequately capture your impairment, typically for multi-level disc injuries or complex cases. Insurers routinely push for whichever method produces the lower number. We advocate for the method that accurately reflects your disability.
Apportionment under LC SS4663 is the insurer's primary weapon against back injury claims in Lancaster. The strategy is straightforward: agree that you have significant permanent disability but argue that a large percentage of it is "non-industrial" — caused by age, genetics, or prior injuries rather than your job at BYD Motors, a solar farm, or a construction site. An insurer might concede you have 45% permanent disability but argue 60% is apportioned to pre-existing degeneration, reducing your compensable rating to just 18%.
We challenge unfair apportionment by presenting medical evidence that your work activities were the predominant cause of your current condition, that degenerative changes visible on imaging were asymptomatic before the work injury, and that the apportionment opinion lacks the substantial medical evidence required under Escobedo v. Marshalls. This landmark case established that apportionment must be based on reasonable medical probability, not speculation — a standard many insurer-hired doctors fail to meet.
When your treating physician recommends spinal surgery — a discectomy, laminectomy, or fusion — the insurer must authorize it through Utilization Review (UR) based on the Medical Treatment Utilization Schedule (MTUS). If UR denies the surgery, we appeal through Independent Medical Review (IMR) under LC SS4610. IMR is decided by independent physicians with no ties to the insurer, and we have successfully obtained surgical authorization for Lancaster workers whose procedures were initially denied by UR.
Injured at work in Lancaster? Call (661) 273-1780
Tap to call →Lancaster back injury claims are heard at the Van Nuys WCAB. Apportionment disputes, PD rating methodology challenges, and surgical authorization appeals are all litigated here. Our firm appears at Van Nuys regularly for Lancaster workers.
Antelope Valley Hospital and Kaiser Permanente Lancaster provide orthopedic and spine care. For complex spinal surgery, Lancaster workers are often referred to spine centers in the greater LA area. We ensure your treating physician is within the MPN and provides documentation thorough enough to withstand insurer challenges.
Back injury PD ratings typically range from 10% for mild strains to 60% or higher for multi-level fusions with complications. A 30% rating for a 50-year-old Lancaster solar installer can exceed $50,000 in PD benefits alone — before settlement negotiations increase the value. The rating methodology and apportionment fight are where the real money is won or lost.
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