Miserable malalignment syndrome: understanding sports injuries in women

Sports injuries are a common concern for active women. Miserable malalignment syndrome (MMS) is a structural lower limb misalignment that can lead to chronic pain, knee problems, and recurrent injuries.

In this article, consultant trauma and orthopaedic surgeon Mr Jose Blanco explores what MMS is, why women are particularly susceptible, the role it plays in sports injuries, and how it can be managed effectively.

What is miserable malalignment syndrome?

Miserable malalignment syndrome is a combination of three anatomical factors:

1. Excessive femoral anteversion: the thigh bone twists inward more than usual.
2. External tibial torsion: the shin bone rotates outward.
3. Patella maltracking: the kneecap does not move smoothly in its groove.

These combined misalignments create a twisting force along the leg, leading to knee pain, instability, and sometimes hip or ankle discomfort. Although MMS affects both men and women, it is more frequently seen in women due to anatomical and biomechanical differences.

Why women are more vulnerable

Women are particularly susceptible to sports injuries related to MMS for several reasons:

• Wider pelvic structure: this increases the angle at which the femur meets the knee (Q-angle), predisposing to patellar misalignment.
• Hormonal factors: relaxed ligaments during certain phases of the menstrual cycle can increase joint stress.
• Muscle imbalances: weakness in hip and thigh muscles can exacerbate maltracking and instability.

These factors make women more prone to anterior knee pain, patellofemoral pain syndrome, and recurrent injuries such as ACL tears or meniscus strains.

Common sports injuries associated with MMS

Athletes with MMS may experience:

• Knee pain during running or jumping: often described as a deep, aching sensation around the kneecap.
• Frequent patella dislocations or subluxations: the kneecap may slide out of its groove, especially during twisting movements.
• Shin splints and stress fractures: altered leg alignment increases stress on bones and muscles.
• Hip and ankle discomfort: compensation for malalignment can affect other joints.

Sports such as football, netball, gymnastics, and running are particularly high-risk for women with MMS due to repetitive knee stress and twisting movements.

Diagnosis and treatment

Diagnosing MMS begins with a detailed clinical assessment, including observation of gait, measurement of leg rotation, and evaluation of muscle strength. Imaging such as X-rays or MRI may be used in complex cases.

Non-surgical management is the first-line approach and includes:

• Physiotherapy: strengthening hip abductors, quadriceps, and core muscles to stabilise the knee.
• Orthotics: custom insoles can correct foot positioning and reduce rotational forces.
• Activity modification: avoiding movements that exacerbate pain while maintaining fitness.

Surgery is rarely required but may be considered in severe cases where non-surgical measures fail. Procedures can include realignment osteotomies to correct bone torsion and patella stabilisation.

Miserable malalignment syndrome is a subtle yet impactful condition that can predispose active women to sports injuries, particularly around the knee.

If you are experiencing recurrent knee pain or instability, consult with Mr Blanco via his Top Doctors profile to identify the underlying cause and receive appropriate management.