Genu recurvatum
| Classification according to ICD-10 | |
|---|---|
| Q68.2 | Congenital deformity of the knee Including: Congenital: Genu recurvatum knee dislocation |
| M21.8 | Other specified acquired deformities of the extremities |
| ICD-10 online (WHO version 2019) | |
The genu recurvatum is an abnormally hyperextensible knee . While healthy adults can normally extend the knee to the 0 position using the neutral-zero method , in children hyperextension of up to 10 ° is considered physiological, from 15 ° it is considered pathological.
This is due to either a congenital abnormal looseness of the ligamentous and capsular apparatus ( hypermobility ) caused by injuries or paralysis (e.g. after poliomyelitis ), or a misalignment of the tibial plateau with a forward inclination.
As a result of the abnormal position, knee pain and premature wear ( osteoarthritis ) can occur.
Possible causes of a misalignment:
- Post-traumatic after fracture healed due to malposition
- Injury to the apophysis or the epiphyseal plate of the tibia
- Innate as a congenital genu recurvatum
- In the context of skeletal dysplasias such as pseudoachondroplasia or skeletal diseases such as osteogenesis imperfecta
- As a result of rickets
diagnosis
The diagnosis is made during the physical examination , the cause is clarified by an X-ray, preferably when the patient is under stress (while standing).
Differential diagnosis
Congenital knee dislocation is to be differentiated diagnostically .
therapy
The treatment consists of muscle strengthening or, in the case of more severe changes, an operative axis correction.
literature
- F. Hefti: Children's orthopedics in practice . Springer 1998, ISBN 3-540-61480-X
- D. Fish, C. Costa: Genu Recurvatum: Identification of Three Distinct Mechanical Profiles. In: Journal of Pediatric Orthopedics 1998, Volume 10, Page 26
Individual evidence
- ↑ F. Hefti: Pediatric Orthopedics in Practice . Springer 1998, ISBN 3-540-61480-X
