Recovery after meniscus surgery and knee arthroscopy

Keyhole knee surgery (knee arthroscopy) uses small cuts, a camera and thin instruments. Through it, the surgeon can look inside the knee, trim a torn meniscus (partial meniscectomy), or stitch it (repair). Most knee arthroscopies last under an hour, though not all.^[3]

The meniscus is the knee’s cushion of cartilage. The timelines here apply to surgery for a mechanical problem, such as a torn meniscus that catches or locks the knee. Keyhole surgery is not a treatment for knee arthritis.^[4]

Swelling and soreness in the first days are normal and tend to settle as the knee moves again.

After a simple scope, crutches are commonly used for the first week. After trimming, most people are back to ordinary walking and daily activity in weeks.^[1][3] After a repair, crutches, sometimes a brace, and limits on bending and weight-bearing often last a number of weeks.^[1]

Wound care, pain control and other after-surgery basics are on the post-surgery recovery page.

A milestone is something your knee can do, such as bending fully, walking without a limp or controlling a single-leg movement. Your surgeon and physiotherapist judge it. Return to sport is guided by milestones as well as time.^[1]

Returning to play is not the same as returning to your previous level. In athlete studies, roughly four in five to nearly nine in ten returned to some sport after meniscus surgery. Fewer got back to their pre-injury level, and it varied widely.^[1]

Repair keeps tissue and asks for months of protected recovery. Trimming recovers faster and removes tissue. Neither is universally better. The right choice depends on the tear and the person.^[2]

For a repair, a 2024 consensus suggests about 6 to 9 months before return to sport (low-grade evidence, meaning the evidence behind it is limited).^[5] Separately, in studies of athletes, return to sport after an isolated repair averaged around five to six months, with wide variation between individuals.^[1] With an ACL reconstruction at the same time, most studies suggest around 9 to 12 months.^[1]

Trimming is the faster clock. In studies of athletes, most returned to sport around seven to nine weeks after a partial meniscectomy, with wide variation. Everyday activity usually returns sooner.^[1]

The decision itself is made on the meniscus page. In exceptional cases, such as a young knee that has lost much of its meniscus, there are also transplant and scaffold options for exceptional cases.

Reading about a problem is a starting point. An assessment brings together the history, an examination where needed and any useful tests, and helps you and your clinician decide what to do next. How much physical examination is needed is a matter of clinical judgement. It may be limited when pain makes an examination unreliable, or when imaging clearly shows a problem that matches the symptoms, such as a fracture seen on an X-ray or an MRI scan that clearly shows an injury consistent with the symptoms. The Singapore Medical Council and the UK General Medical Council both allow remote medical consultations, where a physical examination is not possible, with safeguards: the doctor must be clear about the limits of an opinion formed without an examination, and whether an in-person examination is needed, or referral to other services, is left to the clinical judgement of the attending doctor.

Signs that need urgent help

Some symptoms should not wait for a routine appointment. Each item below says where to go.

After an injury

• The kneecap has slipped out of place and is still out, or the knee looks deformed. Go to an emergency department. If the kneecap went back into place by itself, arrange an early assessment.
• The leg looks twisted or bent, a bone is showing, there is a deep cut, or the foot or leg turns cold, pale, numb, blue or white. Go to an emergency department or call 995.
• You cannot lift your leg up with the knee kept straight, and you may feel a gap just above or just below the kneecap. Arrange an urgent same-day assessment.

At any time

• The knee is stuck and will not straighten, or it is very painful and you cannot move it or put weight on it. Arrange an urgent same-day assessment.
• The knee is suddenly very painful, hot, red and swollen, especially with a fever or feeling generally unwell. Go to an emergency department or call 995.
• One calf or thigh is newly painful and swollen. Arrange an urgent same-day assessment. If you also feel short of breath or have chest pain, call 995.

After knee surgery

• The operated knee becomes more painful, swollen or red, a wound is leaking, or you develop a fever. Contact your surgical team straight away. If you cannot reach them the same day, go to an emergency department. If you feel very unwell, go to an emergency department. If you are short of breath or have chest pain, call 995.

If you are admitted by the doctor at the urgent care centre of one of these private hospitals, the Parkway Pantai hospitals (Mount Elizabeth Orchard, Mount Elizabeth Novena, Gleneagles and Parkway East), Farrer Park Hospital and Thomson Medical Centre, you may ask for Dr Sean Leo to be your attending orthopaedic surgeon. If you are instead discharged and referred for orthopaedic follow-up, you may contact the clinic to arrange an appointment. Both are subject to the hospital’s admission processes and to Dr Leo’s availability.