Comparison of Bracing and Eccentric Loading Exercises on Pain Modulation and Functional Improvement in Acute Pes Anserine Bursitis Patients

Pes anserine bursitis is a condition involving irritation or inflammation of the bursa located near the insertion of the sartorius, gracilis, and semitendinosus tendons on the inner side of the knee. It may cause localized pain and tenderness and can limit daily activities, including walking, climbing stairs, standing up from a chair, and performing other movements involving the knee.

Conservative physiotherapy management may include exercise therapy and external support. Exercise therapy aims to improve the strength and functional capacity of the muscles surrounding the knee, while a knee brace may provide support during weight-bearing activities. However, further comparative evidence is needed to determine which approach provides greater improvements in pain and functional ability in patients with acute pes anserine bursitis.

**Study objective**

The objective of this randomized controlled trial is to compare the effects of knee bracing and eccentric loading exercises on pain intensity and knee-related functional ability in adults with acute pes anserine bursitis. The study is intended to determine whether either intervention provides greater improvement in the measured outcomes.

**Study design and treatment groups**

The study uses a two-group, parallel randomized controlled trial design. Eligible participants are assigned to one of two intervention groups following screening and informed consent. The planned sample comprises 32 participants, with 16 participants allocated to each group.

**Bracing group**

Participants assigned to the bracing group receive a properly fitted medial-support knee brace. The prescribed wearing schedule is approximately 6-8 hours daily during weight-bearing activities for eight weeks. Participants are instructed on the correct use and care of the brace.

**Eccentric loading exercise group**

Participants assigned to the exercise group follow a structured exercise program targeting the muscles surrounding the knee, including the quadriceps and hamstrings. The program includes strengthening and functional exercises, such as leg raises, hamstring curls, and step-ups. Exercises are prescribed three times per week for eight weeks, with three sets of approximately 10-15 repetitions, adjusted according to the participant's tolerance and ability. Exercise intensity progresses gradually as tolerated.

**Outcome assessment**

Pain intensity is assessed using the Visual Analogue Scale (VAS), and knee-related symptoms and functional limitations are assessed using the Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC). These instruments are used to evaluate changes in pain and function over the course of the intervention.

Baseline assessments are performed before treatment. Follow-up assessments are planned to evaluate treatment response and determine whether improvements are maintained. The final assessment schedule should correspond to the actual visits completed and the time points specified in the approved study protocol.

**Data analysis**

Participant characteristics are summarized using descriptive statistics. Within-group changes and between-group differences in pain and functional outcomes are evaluated using appropriate statistical methods. The choice of statistical tests depends on the distribution of the data, the study design, and the availability of measurements at each assessment time point.

Potential significance

The findings may contribute to the evidence supporting conservative physiotherapy management of acute pes anserine bursitis. Comparing these interventions may help physiotherapists make informed treatment decisions based on improvements in pain and knee-related function.