Normal ranges of popliteal angle in children

Kalman Katz*, Alex Rosenthal, Zvi Yosipovitch

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

76 Scopus citations


Measurement of the popliteal angle is used to assess hamstring contracture in children with cerebral palsy. The popliteal angle in 482 normal children, 1-10 years of age, was measured. Using a 360° goniometer, the popliteal angle was measured with the hip held at 90° flexion to indicate hamstring muscle tightness. Between the ages of 1 and 3 years, the mean angle was 6° (range, 0-15). At age 4, the angle rose to 17° in girls and 27° in boys (range, 5-45). At s=5 years the mean angle was 26° with little change (range, 0-50). A popliteal angle of >50° in the above age groups indicates abnormal hamstring tightness.

Original languageEnglish
Pages (from-to)229-231
Number of pages3
JournalJournal of Pediatric Orthopaedics
Issue number2
StatePublished - 1992


  • Normal ranges
  • Popliteal angle


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