Custom-Made Foot Orthoses Decrease Medial Foot Loading During Drop Jump in Individuals With Patellofemoral Pain.
OBJECTIVE
To investigate the effect of foot orthoses on medial-to-lateral plantar forces during drop jump and single leg squat, and second, to explore the self-reported change in symptoms after 12 weeks of wearing the orthoses in individuals with patellofemoral pain (PFP).


METHODS
Cohort study with 12 weeks of follow-up.


METHODS
Hospital setting.


METHODS
23 adults with PFP.


METHODS
Custom-made foot orthoses.


METHODS
Foot loading (plantar pressure) was collected from the most painful side during drop jump and single leg squat using pressure sensitive Pedar insoles. Primary outcome was the medial-to-lateral peak force under the forefoot during drop jump. The PFP syndrome severity score was used to measure self-reported improvement from baseline to follow-up.


RESULTS
Orthoses were associated with a significant 2.9%-point (95% confidence intervals: 0.7-5.1) reduction in peak medial-to-lateral force during drop jump. Individuals with a self-reported improvement after 12 weeks had a significant 4.2%-point larger reduction in medial-to-lateral foot loading during drop jump.


CONCLUSIONS
This preliminary study showed that foot orthoses were associated with a decrease in medially directed foot loading among individuals with PFP. Individuals, who have an immediate decrease in the medial-to-lateral peak force after fitting the orthoses, were more likely to report improvements after 12 weeks of use.
*Department of Occupational and Physiotherapy, Aalborg University Hospital, Aalborg, Denmark; †A-Physiotherapy, Solroed Strand, Denmark; ‡Institute of Sports Medicine, Department of Orthopaedic Surgery M, Bispebjerg Hospital, Aalborg, Denmark; §Laboratory of Human Movement Analysis, Department of Orthopaedic Surgery, Copenhagen University Hospital, Hvidovre, Denmark; ¶Physical Medicine and Rehabilitation Research-Copenhagen (PMR-C), Department of Physical Therapy, Copenhagen University Hospital, Copenhagen, Denmark; ‖Department of Orthopedic Surgery, Copenhagen University Hospital, Copenhagen, Denmark; **Clinical Research Centre, Copenhagen University Hospital, Copenhagen, Denmark; and ††Sports Orthopedic Research Center-Copenhagen, Arthroscopic Center, Department of Orthopedic Surgery, Copenhagen University Hospital, Amager-Hvidovre, Denmark.
Michael S
MS
Rathleff
Camilla
C
Richter
Christoffer
C
Brushøj
Jesper
J
Bencke
Thomas
T
Bandholm
Per
P
Holmich
Kristian
K
Thorborg
D000328:Adult; D015331:Cohort Studies; D004867:Equipment Design; D015444:Exercise; D005260:Female; D005528:Foot / Q000502:physiology*; D061826:Foot Orthoses; D006801:Humans; D008297:Male; D010146:Pain; D046788:Patellofemoral Pain Syndrome / Q000628:therapy*; D011312:Pressure; D016474:Weight-Bearing; D055815:Young Adult