MCL, ACL and PCL injuries

The medial collateral ligament runs along the inner side of the knee and helps resist forces that push the knee inward. The anterior cruciate ligament helps control forward movement and rotation of the shin, while the posterior cruciate ligament helps control backward movement. A knee injury can involve one ligament or several structures, including cartilage or bone. Pain, swelling, bruising, reduced movement, a feeling of giving way, or difficulty putting weight through the leg can occur. Symptoms alone cannot identify which ligament is injured; an examination and, when needed, imaging help clarify the pattern.

Protect the knee from movements that increase pain or instability, and follow the clinician’s advice about weight-bearing and activity. Elevation, a comfortable cold pack wrapped in cloth, and prescribed pain relief may be used when appropriate. A Knee Bracing plan may support a specific ligament, but the brace should fit the examination findings. Physiotherapy can restore movement, build strength, train balance, and gradually reintroduce sport-specific tasks. A Return-to-Sport Programme should use functional milestones rather than a calendar date alone. Do not test cutting, jumping, or pivoting before your rehabilitation team says those tasks are appropriate.

Arrange prompt assessment after a twisting injury, a pop followed by swelling, marked instability, inability to bear weight, or a knee that cannot fully straighten. Seek urgent care for a cold or pale foot, new numbness, severe increasing pain, or an obvious deformity. Reassessment is also appropriate when swelling persists, the knee repeatedly gives way, or progress stalls during Physiotherapy.

Ask which ligament and other structures are involved, whether the knee is stable, and what activity limits apply now. Ask how a brace should be used, which exercises are safe, what milestones guide progression, and how readiness for sport will be tested.