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Physiotherapy. 2009 Mar;95(1):24-8. doi: 10.1016/j.physio.2008.05.009. Epub 2008 Aug 29.

Hamstring length in patellofemoral pain syndrome.

Author information

1
Department of Rehabilitation, James Cook University Hospital, Middlesbrough, UK.

Abstract

OBJECTIVES:

To investigate whether there was a difference in hamstring length between patients with patellofemoral pain syndrome and healthy asymptomatic controls aged 18 to 35 years.

DESIGN:

A cross-sectional observational study measuring hamstring length in patients and asymptomatic controls.

SETTING:

Hospital physiotherapy department.

PARTICIPANTS:

Two groups were tested; one group diagnosed with patellofemoral pain syndrome (mean age 27 years, n=11, six males, five females) and one group of asymptomatic controls (mean age 25 years, n=25, 13 males, 12 females).

MAIN OUTCOME MEASURES:

Hamstring length was evaluated using the passive knee extension method to measure popliteal angle.

RESULTS:

The mean (standard deviation) values for hamstring length were 145.6 (8.7) degrees for patients with patellofemoral pain syndrome and 153.7 (10.1) degrees for the asymptomatic controls. The mean (95% confidence interval) difference between the groups was 8.0 (0.8 to 15.1) degrees , and analysis with a t-test revealed that this was statistically significant (P<0.05).

CONCLUSIONS:

This study found that patients with patellofemoral pain had shorter hamstring muscles than asymptomatic controls. It is not clear whether this is a cause or effect of the condition. Further research is suggested to study how hamstring length changes with rehabilitation, and the relationship with pain.

PMID:
19627682
DOI:
10.1016/j.physio.2008.05.009
[Indexed for MEDLINE]

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