Medial Collateral Ligament (MCL) injuries are among the most common knee injuries we see in sport, often caused by a force that pushes the knee inward. Whether you’ve had a mild sprain or a more serious tear, understanding how to manage an MCL injury is key to a full recovery.
What is the MCL?
- Grade I (Mild sprain): Slight stretching or micro-tearing of the ligament, resulting in minor pain and mild swelling.
- Grade II (Moderate tear): Partial tear of the ligament with more pronounced pain, swelling, tenderness, and mild instability.
- Grade III (Severe tear): Complete rupture of the ligament leading to significant pain, swelling, and a feeling of giving way (instability).
Management of MCL Injuries
A recent systematic review published in BMJ Open Sport & Exercise Medicine provides guidance on how MCL injuries can be effectively treated without surgery, especially when guided by a structured rehabilitation plan. Non-surgical treatment, including bracing and physiotherapy, can be highly effective in the majority of patients. Even complete tears have the capacity to heal well without surgery if managed properly.
Bracing plays a short-term protective role in the early stages of recovery. Your physiotherapist may advise a hinged range of motion (ROM) brace to help restrict side-to-side movement of the knee that may stress the MCL. Bracing typically lasts 4–6 weeks, with gradual increases in knee movement during that time.
A structured rehabilitation program should be followed for 6-12 weeks, depending on the severity of the injury. Effective rehabilitation will progress through stages of recovery as outlined below:
- Phase 1: Protection & Pain Management
- Phase 2: Restoring Movement & Strength
- Phase 3: Proprioception & Functional Strength
- Phase 4: Return to Sport/Activity
This systematic review highlights that ‘one-size-fits-all’ protocols don’t work. Your rehab plan should be personalised based on the grade and mechanism of injury, individual sport and lifestyle demands, as well as strength and range of motion benchmarks.
When is Surgery Considered?
Most isolated MCL tears (Grades I–III) respond well to conservative (non-operative) management. Surgery would be considered if there is persistent instability after rehab, or if there are multi-ligament injuries, chronic instability, or elite athletic needs.
What this Means for You
If you’ve injured your MCL, the research indicates that with the optimal rehab you can recover fully, without needing surgery.
The key to a successful recovery includes:
- Early correct definitive diagnosis
- Early bracing and good initial acute management
- Tailored rehab plan specific to your body, goals, and injury grade
- Monitoring progress weekly to ensure safe loading
- Working with sport-specific return-to-play guidelines when needed
A structured and progressive rehabilitation plan led by a physiotherapist is the optimal way to recover from a MCL injury.
References
Jasmine Svantesson, Ramana Piussi, Elin Weissglas, Eleonor Svantesson, Alexandra Horvath, Erik Börjesson, Andy Williams, Robert Prill, Kristian Samuelsson, Eric Hamrin Senorski – Shedding light on the non-operative treatment of the forgotten side of the knee: rehabilitation of medial collateral ligament injuries—a systematic review: BMJ Open Sport & Exercise Medicine 2024;10:e001750.