Ulnar Impaction Syndrome in Texas Workers’ Compensation Claims
FREE CONSULTATION
Contact Us About Your Case
FREE Consultation Today.
Ulnar Impaction Syndrome in Texas Workers’ Compensation Claims
Ulnar Impaction Syndrome (UIS) — also known as ulnar abutment syndrome — is a painful degenerative wrist condition caused by excessive pressure between the ulna and the carpal bones, especially the lunate and triquetrum. In Texas workers’ compensation claims, UIS is frequently linked to repetitive gripping, heavy lifting, twisting injuries, and trauma that alters wrist mechanics.
UIS is one of the most misunderstood and most disputed wrist conditions in workers’ comp. Carriers often claim it is “degenerative,” “preexisting,” or “not caused by work.” But UIS is commonly triggered or aggravated by workplace trauma — especially TFCC tears, ulnar‑sided wrist injuries, and repetitive strain.
This post explains how UIS develops, how it’s diagnosed, what treatment is available, and how injured workers can protect their claims.
What Is Ulnar Impaction Syndrome?
Ulnar Impaction Syndrome occurs when the ulna is longer than the radius (positive ulnar variance) or when trauma causes the ulna to shift, resulting in:
- Excessive pressure on the TFCC
- Degeneration of the lunate and triquetrum
- Chronic ulnar‑sided wrist pain
- Progressive cartilage damage
- TFCC tearing
UIS is strongly associated with:
- TFCC tears
- Lunotriquetral ligament tears
- Ulnar‑sided wrist trauma
- Repetitive gripping or twisting
See TFCC Tears.
Common Work Related Causes of Ulnar Impaction Syndrome
UIS is frequently caused or aggravated by:
- Repetitive gripping
- Heavy lifting
- Tool vibration
- Twisting injuries (machinery, torqueing)
- Falls onto an outstretched hand (FOOSH)
- Direct blows to the ulnar wrist
- Overuse in manual labor
- TFCC tears that destabilize the wrist
These mechanisms are fully consistent with compensable injuries under Texas workers’ compensation.
Symptoms of Ulnar Impaction Syndrome
Workers often report:
- Ulnar‑sided wrist pain
- Pain with gripping or twisting
- Clicking or popping
- Weak grip strength
- Swelling
- Pain when pushing off with the hand
- Decreased range of motion
- Difficulty lifting or carrying
Symptoms typically worsen with repetitive tasks or weight‑bearing.
How Ulnar Impaction Syndrome Develops After Trauma
UIS often develops after a wrist injury, especially:
- TFCC tears
- Lunotriquetral ligament tears
- Distal radius fractures
- Carpal instability
- Chronic ulnar‑sided wrist strain
Trauma can change wrist alignment, increasing pressure on the TFCC and carpal bones — accelerating degeneration.
Diagnosis of Ulnar Impaction Syndrome
Diagnosis may include:
- Physical Examination Pain with ulnar deviation Tenderness over TFCC Grip weakness
- X‑ray Shows positive ulnar variance or carpal degeneration.
- MRI Identifies TFCC tears, cartilage wear, bone edema.
- MR Arthrogram Provides enhanced visualization of TFCC integrity.
- CT Scan Useful for evaluating carpal alignment and advanced degeneration.
Accurate diagnosis is essential for proving causation and securing treatment.
Medical Treatment for Ulnar Impaction Syndrome
Workers may be entitled to:
- Conservative Care Anti‑inflammatory medications Bracing Activity modification Physical therapy
- Injections Steroid injections may reduce inflammation.
- Surgery For moderate to severe cases:
- Ulnar Shortening Osteotomy (standard of care)
- Wafer Procedure (removal of part of the ulna)
- TFCC repair or reconstruction
- Debridement of degenerative tissue
- Post‑Operative Rehabilitation
- Work Hardening
- Functional Restoration Programs
Recovery Timeline
Typical recovery:
- Mild cases: 4–8 weeks
- Moderate cases: 2–4 months
- Postsurgical recovery: 3–6 months
Workers performing heavy labor may require extended restrictions.
Complications of Ulnar Impaction Syndrome
If untreated or undertreated, UIS can lead to:
- Chronic wrist pain
- TFCC degeneration
- Lunotriquetral arthritis
- Grip weakness
- Carpal instability
- Permanent impairment
These complications often increase impairment ratings.
Impairment Ratings for Ulnar Impaction Syndrome
Impairment ratings may be based on:
- Loss of wrist motion
- Grip strength deficits
- TFCC damage
- Surgical outcomes
- Chronic pain
- Joint degeneration
UIS frequently results in measurable impairment.
Why Insurance Companies Dispute Ulnar Impaction Syndrome
Carriers often argue the:
- condition is “degenerative”
- worker had prior wrist pain
- mechanism was “insufficient”
- MRI shows “wear‑and‑tear”
- condition is “not work‑related”
These disputes can be challenged through:
See Aggravation Injuries.
How MLF Legal Proves Ulnar Impaction Syndrome Is Work Related
Our Workers’ Compensation Lawyers assist clients by:
- Proving UIS is traumatic or aggravated by work
- Linking UIS to TFCC tears or wrist trauma
- Challenging “degenerative condition” arguments
- Securing MRIs, CT scans, and specialist evaluations
- Fighting for injections or surgery
- Preparing workers for designated doctor exams
- Challenging low impairment ratings
- Winning disputes at BRCs and CCHs
UIS claims are winnable — but only with the right evidence and strategy.
The Bottom Line
Ulnar Impaction Syndrome is a painful, degenerative wrist condition that often requires surgery and long‑term treatment. If you developed UIS after a work injury, you need a lawyer who understands the medical issues, the legal standards, and the strategies necessary to win your case.
Call MLF Legal Today!
If you developed Ulnar Impaction Syndrome after a work injury, call the Texas Workers’ Compensation Lawyers at MLF Legal today.
📞 214‑357‑1782
We fight for injured workers — not insurance companies.
FAQs: Ulnar Impaction Syndrome in Texas Workers’ Compensation Claims
Yes. It is compensable if caused or aggravated by work activities or trauma.
Moderate to severe cases often require ulnar shortening or TFCC repair.
X‑ray, MRI, MR arthrogram, CT, and physical exam.
You can challenge the denial through extent‑of‑injury litigation.
Yes. Loss of motion, pain, and surgical outcomes often result in measurable impairment.
Injured at work in Texas and your employer doesn’t have workers’ comp?
You may have the right to sue and recover full compensation.
Contact MLF Legal today for a free consultation. You pay nothing unless we win your case.
Next Steps:
1st
Sign up For a Free One-on-One Work Comp Case Evaluation
NEXT LEGAL STEP
Get a Legal Opinion
Contact us today to schedule your personalized one-on-one free phone consultation with one of our dedicated legal professionals. Our experienced Worker’s Comp Lawyers are here to provide the expert legal guidance and support you need throughout the entire process of your case.
We understand the complexities involved in Worker’s Compensation claims and are committed to helping you achieve the best possible outcome. Don’t hesitate to reach out and take the first step toward securing the justice you deserve.
2nd
Download Free E-Books
NEXT LEGAL STEP
Workers' Compensation
Applying for workers compensation can be a challenging process. It involves filing a claim, providing medical documentation, and navigating the approval process. Seeking guidance from a workers’ compensation attorney can help ensure your rights are protected and your claim is handled properly.
LET’S GET STARTED
Call MLF Legal today
214-357-1782
Fill out our online form
for a free consultation.
We only get paid if we win your case.