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Knee Disorders - in children

As a university hospital we are one of few centers in Sweden that do advanced surgery for children and adolescents with patellofemoral instability, knee disorders in children with neuromuscular disorders, different syndromes, and Osteogenesis imperfecta.

Patellar dislocation (the kneecap popping out) is the most common severe knee-injury in children presenting with an acute swelling-of the knee after trauma.

Knee injuries can be:

  • acute due to trauma (patellar dislocation with osteochondral or chondral injuries, fractures in the knee joint, cruciate- or collateral ligament or meniscus injuries).
  • developing over time like Mb Schlatter or Osteochondritis dissecans
  • symptoms from for example an abnormal meniscus (discoid meniscus)
  • kneecap instability due to, patellofemoral dysplasia, syndromes, or musculoskeletal disorders.

Traumatic intraarticular knee injuries and fractures are the most common knee-condition treated at our clinic. Such injuries are more common in slightly older children.

For children 9-15 years of age 1/1000 suffers from a patellar dislocation, making it the number one intraarticular knee injury in adolescents. When the kneecap pops out the chondral tissue covering the bone in the knee joint can be injured and the ligament stabilizing the kneecap torn. There is a high risk of recurrent dislocations in children. The second most common injury is anterior cruciate ligament (ACL) injuries and the third is anterior tibial spine fracture. Isolated meniscus injuries are less common, but medial collateral ligament injuries are common among younger children (typical ski injury at the age 5-6 years).

Discoid meniscus, Mb Schlatter, apophysitis and osteochondritis dissecans in the knee are other conditions typically seen in children. We also treat other knee disorders related to syndromes and neuromuscular disorders that needs advanced surgery including rotational osteotomies and surgeries for alignment and patellar instability.

Our team

A key to success in the care we offer is collaboration. Besides physiotherapists, orthopedic engineers, providing braces, as well as our dedicated day-surgery unit are essential for the optimal chain of care.

An acute knee trauma can result in hemarthrosis (intraarticular bleeding) or a swollen knee. The knee can be difficult to examen because of pain, the swelling, and a frightened child. An acute knee trauma, an overuse injury or other disorders of the knee can result in different symptoms such as limping, locking of the knee or swelling. Pain, instability, or reduced range of motion are other common symptoms.

We have a knee team with doctors skilled in knee examination, surgery, and rehabilitation at our orthopedic department. In the emergency room, there are well established routines for knee trauma. All kids with a swollen knee after trauma will have an acute plain x-ray to rule out a fracture. Patients from 9 years of age with knee hemarthrosis after an acute knee trauma and no fracture will be referred to an MRI within a week to further investigate intraarticular injury, which become more common from that age. The patient will have a follow up at our outpatient clinic as soon as possible after the MRI is done. Clinical examination together with the findings from radiology and MRI will give the diagnosis. We work proactive in diagnostics to optimize care and minimize time to treatment. Children with less acute knee problems referred to us, should have basic investigations such as radiology done before referral.

Treatment depends on the injury and range from alternative training and physiotherapy to surgery and immobilization with a brace or plaster. Sometimes a combination of all the above, depending on the injury. Rehabilitation after a knee injury is important to gain strength and stability to be able to return to daily activities and sports. Therefore, we work closely together with physiotherapists at several clinics outside the hospital.

To evaluate our work and further develop the care we are involved in the Swedish Pediatric Orthopedic Quality Register (SPOQ). We also conduct several research projects in the patellar instability field.

Pediatric Orthopedics

The Pediatric Orthopaedic Department at Astrid Lindgren Childrens hospital provides excellent care for young patients with musculoskeletal problems age 0-14y. Pediatric Orthopedics
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The Astrid Lindgren Children’s Hospital is a part of Karolinska University Hospital, with facilities in several locations in Stockholm.