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Patellofemoral pain cluster | PFPS Diagnosis and Assessment

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Patellofemoral pain cluster 2

Patellofemoral pain cluster | PFPS Diagnosis and Assessment

In this post, you will learn 3 diagnostic patellofemoral pain clusters that can help you to diagnose and assess patellofemoral pain.

Cluster 1

Cook et al. (2010) investigated the best combinations of functional tests and situational phenomena and report a positive likelihood ratio of 3.3 and negative likelihood ratio of 0.73 for 2 of 2 positive findings. These findings plus their large confidence intervals can only be given a weak clinical value.

The Clinical findings were pain during muscle contraction and pain during squatting.

 

Cluster 2

Cook et al. (2010) report a positive likelihood ratio of 4 and negative likelihood ratio of 0.5 for 2 of 3 positive findings. These findings plus their large confidence intervals can only be given a weak clinical value.

The items of the cluster were the following:

  • Pain during muscle contraction and/or
  • Pain during squatting and/or
  • Pain during peripatellar palpation

 

Cluster 3

Cook et al. (2010) report a positive likelihood ratio of 3.1 and negative likelihood ratio of 0.7 for 3 of 3 positive findings. These findings plus their large confidence intervals can only be given a weak clinical value.

The items of the cluster were the following:

  • Pain during muscle contraction
  • Pain during squatting
  • Pain during kneeling

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Other common orthopedic tests to assess for patellofemoral pain syndrome are:

 

References

Cook, C., Hegedus, E., Hawkins, R., Scovell, F., & Wyland, D. (2010). Diagnostic accuracy and association to disability of clinical test findings associated with patellofemoral pain syndrome. Physiotherapy Canada, 62(1), 17-24.

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