Thumb Ligament (UCL) Injury Treatment in Raleigh, NC
Fell on your thumb while skiing, or forced it backward during a sport? A thumb UCL tear — 'Skier's thumb' — can cause chronic instability and arthritis if not properly diagnosed and treated.
What Is Thumb Ligament (UCL) Injury?
The ulnar collateral ligament (UCL) of the thumb MCP joint stabilizes the thumb during pinch. It is commonly torn when the thumb is forced radially (away from the hand), which happens in ski falls (catching a ski pole), ball sports, and falls on an outstretched thumb.
In a complete UCL tear, the ligament end can become trapped outside the thumb muscle (adductor aponeurosis) — this is called a Stener lesion. When a Stener lesion is present, the ligament cannot heal on its own and surgery is required.
ⓘ A Stener lesion occurs in ~80% of complete UCL tears and prevents the ligament from healing without surgery. If your thumb feels unstable after injury, see Dr. Chambers promptly — MRI will confirm.
Risk Factors
Several factors are associated with a higher likelihood of developing this condition.
Skiing
Most common cause — catching a ski pole
Ball Sports
Football, basketball, volleyball
Gymnastics
Landing falls on thumb
Martial Arts
Joint locks and throws
Any Fall
Landing on outstretched thumb
Volleyball
Ball striking thumb on spike
Stages of Thumb Ligament (UCL) Injury
Ligament stretched but intact. Joint is stable with stress testing.
Partial ligament tear. Some instability. Moderate swelling and pain.
Complete UCL rupture. Significant instability. Stener lesion likely present.
Diagnosis
Dr. Chambers performs careful stress testing of the thumb MCP joint under local anesthesia to assess degree of instability. X-rays rule out associated avulsion fractures. MRI is the gold standard for confirming complete tears and identifying Stener lesions.
- ✓Stress testing of thumb MCP UCL (radial deviation)
- ✓X-rays (AP, lateral, stress views)
- ✓MRI to confirm completeness and Stener lesion
- ✓Assessment of thumb pinch and grip strength
- ✓Evaluation for associated avulsion fracture
Treatment Outcomes & Statistics
Published outcome data to help you make an informed decision. Dr. Chambers will review what these numbers mean for your specific case at your visit.
Partial tears heal fully with appropriate splinting in 4–6 weeks
Excellent stability and function after primary UCL repair
Most athletes return to full sport in 6–12 weeks
Very safe outpatient procedure with experienced surgeon
Complication Profile
| Complication | Rate | Severity | Notes |
|---|---|---|---|
| Stiffness | 10–15% | Minor | Addressed with hand therapy |
| Nerve (radial sensory) irritation | 5–10% | Minor | Temporary; resolves in most cases |
| Chronic instability (missed Stener) | High | Serious | If Stener lesion not addressed, instability persists |
| Infection | <1% | Minor | Very rare with sterile technique |
Source: Heyman et al., J Hand Surg 1993; Harley et al., J Hand Surg 2004
Treatment Options
Dr. Chambers will recommend the best approach based on your severity, goals, and lifestyle. Most conditions are first treated non-surgically.
Thumb Spica Splint
Grade I–II (partial) tears heal very well with 4–6 weeks in a thumb spica splint. This keeps the thumb stable and allows ligament healing. Custom thermoplastic splints are made by our hand therapists.
UCL Primary Repair
Complete tears with Stener lesion require surgical repair. The ligament is reattached to the thumb bone with a suture anchor. Performed under local anesthesia (WALANT) as an outpatient procedure. Excellent outcomes with early range of motion.
UCL Reconstruction (Chronic Instability)
Patients with chronic thumb instability from missed or failed repair require ligament reconstruction using a tendon graft. This restores stability and prevents progressive thumb arthritis.
What to Expect During Recovery
Post-Repair Splinting
Thumb in splint after surgery. Motion of other fingers maintained. Wound care as directed.
Removable Splint & Motion
Transition to removable splint. Gentle thumb range-of-motion exercises begin.
Strengthening
Progressive pinch and grip strengthening. Most daily activities allowed without splint.
Return to Sport
Return to non-contact sport at 8–10 weeks. Contact sports and skiing at 10–12 weeks with protective thumb guard.
Frequently Asked Questions
No — Grade I and most Grade II (partial) tears heal well with thumb spica splinting alone. Surgery is required for complete Grade III tears where a Stener lesion is present (ligament end trapped outside the aponeurosis, preventing natural healing). MRI confirms whether surgery is needed.
A Stener lesion occurs when the torn UCL end flips outside of the adductor aponeurosis muscle. With the aponeurosis between the torn ligament ends, the ligament cannot heal on its own — surgery is required to retrieve and reattach it. This occurs in approximately 80% of complete UCL tears.
See Dr. Chambers within the first week ideally. While early repair is preferred for complete tears, repair can still be done within 6 weeks with excellent outcomes. After 6 weeks, reconstruction with a graft may be needed. Do not delay if your thumb feels unstable.
Yes — most patients return to skiing and all sports at 10–12 weeks with a thumb guard. Long-term outcomes after UCL repair are excellent, with full return to the pre-injury activity level in the vast majority of cases.
Thumb Unstable After Injury? Don't Wait.
UCL injuries treated early have excellent outcomes. No referral needed — same-week appointments available.
Stephen Chambers, M.D.
Dual Board-Certified Hand & Upper Extremity Surgeon · Raleigh Orthopaedic
