Knee & Leg
MCL Sprain
Also called: Medial collateral ligament injury
Sprain of the ligament on the inner knee, usually from a blow to the outer knee or a valgus twist (ski edges, football contact). Good news: the MCL has excellent blood supply and most grades heal well without surgery through protected motion and progressive loading.
Common signs
- Inner-knee pain after a lateral blow or twist
- Tenderness along the inner joint line region
- Sense of inner-knee looseness with side steps (higher grades)
- Swelling localized to the inner knee
Seek help now if
- Multi-ligament injury signs: gross instability, huge immediate swelling
- Numbness or vascular changes
- Locked knee
Any of these: call 911 or get to an emergency room first. Everything else can wait.
What to do first
- Exam grades the sprain by how much the joint opens to stress — this sets the timeline (roughly 2–8+ weeks by grade)
- Higher grades may use a hinged brace early; motion within protection starts promptly
- Ice, compression, normal gait as soon as tolerated
If it's become chronic
- Progress: protected range → strengthening → lateral movement → cutting progression with criteria at each gate
- Residual laxity is protected by strength — make the muscles the brace
- Combined injuries (ACL/meniscus) change the plan; isolated MCLs rarely need surgery
Natural healing options we use
- Manual therapy scaled to healing phase
- Chiropractic care for hip and ankle contributions
- Progressive loading and lateral-movement retraining
- Attended e-stim; collagen and protein support
About imaging
Clinical for isolated cases; MRI when multi-ligament injury or grade 3 is suspected.
Daily self-care
- Move it early within the protected range
- Strengthen inner quad and hips throughout
- Earn lateral cutting back through progression, not the calendar
More in Knee & Leg
Knee OsteoarthritisPatellofemoral Pain SyndromePatellar TendinopathyACL Sprain / TearPCL SprainMeniscus TearIT Band SyndromeBaker's Cyst
Please read: this page is education, not a diagnosis. A proper examination is how a condition gets confirmed and a plan gets built. See our medical disclaimer.