title: Evaluation of a treatment algorithm for patients with patellofemoral pain syndrome: a pilot study.
abstract: BACKGROUND
  Treatment of patellofemoral pain syndrome (PFPS) has been extensively studied in physical therapy literature. Patients with PFPS demonstrate quadriceps and hip musculature weakness, altered lower extremity (LE) kinematics, and decreased LE flexibility. Psychosocial factors have also been identified as an important factor in patients with PFPS. The authors hypothesize that an ordered approach addressing each of these impairments sequentially will result in greater improvement in PFPS symptoms. The purpose of this pilot study was to assess the feasibility of performing a randomized trial and to determine the sample size necessary to examine the validity of this hypothesis.
  
  
  METHODS
  Patients received a sequential treatment approach using a PFPS treatment algorithm (PFPS Algorithm) designed by the authors. Patients were evaluated assessing psychosocial factors, flexibility, LE kinematics, and LE strength. Impairments that were found in the evaluation were addressed sequentially over the episode of care. Patients were prescribed therapy two times per week for six weeks. Pain, Anterior Knee Pain Scale (AKPS), and Global Rating of Change (GROC) were measured at evaluation and discharge.
  
  
  RESULTS
  Thirty consecutive patients with PFPS who were referred to physical therapy were enrolled in the pilot study. All phases of the feasibility study including recruitment, treatment protocols and data collection were effectively carried out. One hundred percent of patients treated with the PFPS algorithm who completed the prescribed treatment had a clinically significant improvement in the AKPS and GROC. A floor effect was noted with NPRS with 38% of patients unable to achieve clinically significant improvement.
  
  
  CONCLUSIONS
  With minor changes to the protocol and outcome measures used, a full randomized trial is feasible and merited. Steps must be taken to reduce the high drop-out rate among both groups.
  
  
  METHODS
  1b.
authors.affiliation: Sports and Orthopedic Physical Therapy, Nationwide Children's Hospital, Columbus, Ohio, USA.
authors.forename: Mitchell
authors.initials: M
authors.lastname: Selhorst
authors.affiliation: Sports and Orthopedic Physical Therapy, Nationwide Children's Hospital, Columbus, Ohio, USA.
authors.forename: William
authors.initials: W
authors.lastname: Rice
authors.affiliation: Sports and Orthopedic Physical Therapy, Nationwide Children's Hospital, Columbus, Ohio, USA.
authors.forename: Todd
authors.initials: T
authors.lastname: Degenhart
authors.affiliation: Sports and Orthopedic Physical Therapy, Nationwide Children's Hospital, Columbus, Ohio, USA.
authors.forename: Michael
authors.initials: M
authors.lastname: Jackowski
authors.affiliation: Sports and Orthopedic Physical Therapy, Nationwide Children's Hospital, Columbus, Ohio, USA.
authors.forename: Melissa
authors.initials: M
authors.lastname: Tatman
keywords: Patellofemoral pain; knee pain; physical therapy