Ultrasonography and clinical examination of knee injuries in pre- and post- menarche dancers

Nili Steinberg*, Myriam Stern, Shay Tenenbaum, Alexander Blankstein, Aviva Zeev, Itzhak Siev-Ner

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


This study aimed at evaluating whether the prevalence of knee injuries and morphological features are different among pre-and-post menarche dancers; Sixty-seven pre-and-post menarche dancers were screened for anthropometric parameters; knee laxity; patella femoral pain syndrome (PFPS), pathologies and anatomical structure of the knees. Both groups showed a high and similar prevalence of PFPS. The post-menarche dancers produced a significantly higher rate of Tanner stages 3–4 (p = .010), greater weight (p < .001) higher BMI (p = .003); and, higher prevalence of MCL pathology, pes planus, and scoliosis compared with pre-menarche dancers (p < .05). The pre-menarche dancers started dance practice earlier (p = .008); and, showed significantly higher prevalence of lateral laxity, patellar laxity, positive Lachman test and positive Drawer test compared with post-menarche dancers (p < .05). Interactions (menarche yes/no by PFPS no/one leg/both legs) were found for BMI (p = .044; η2 = .187), trochlear cartilage thickness (p = .020; η2 = 0.121) and tip of patella–trochlear groove distance (p = .024; η2 = .150). Pre-and-post-menarche female dancers demonstrated similar prevalence of knee injuries, with different body morphology.

Original languageEnglish
Pages (from-to)289-305
Number of pages17
JournalResearch in Sports Medicine
Issue number3
StatePublished - 3 Jul 2018


FundersFunder number
Pais Committee for Art and Culture, IsraelPais-7097


    • Intra articular effusion
    • PFPS
    • Ultrasonography
    • age onset of menarche
    • dance
    • knee joint


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