Reliability and Validity of the Six-Spot Step Test After Total Hip Arthroplasty

Assessment of the Reliability and Validity of the Six-Spot Step Test in Patients Following Total Hip Arthroplasty

This study aims to assess the SSST's validity, reliability, and ability to differentiate between high and low fall risk individuals in THA patients. Establishing the SSST as a valid and reliable tool will help manage rehabilitation and apply timely interventions for THA patients.

Total hip arthroplasty (THA) is a common surgery for patients with advanced hip osteoarthritis, aiming to reduce pain and improve function. However, THA patients often experience difficulties in mobility tasks, such as walking, stair climbing, and standing up, even years after surgery. These functional impairments increase the risk of falls, highlighting the need for effective clinical tests to assess balance and mobility. Identifying factors contributing to balance dysfunction and implementing appropriate rehabilitation are crucial for improving quality of life.

The Six-Spot Step Test (SSST), developed by Nieuwenhuis et al., is a quick and easy test that evaluates balance and mobility in daily life activities. However, its validity and reliability in THA patients have not been studied. This research aims to assess the SSST's validity, reliability, and ability to differentiate between high and low fall risk individuals in THA patients. Establishing the SSST as a valid and reliable tool will help manage rehabilitation and apply timely interventions for THA patients.

Inclusion Criteria:

• Underwent primary unilateral Total Hip Arthroplasty (THA)
• Surgery performed using the posterolateral approach
• At least six months of postoperative follow-up

Exclusion Criteria:

• Patients who underwent bilateral or revision THA
• History of additional lower limb surgery
• Body mass index (BMI) greater than 40 kg/m²
• Neurological, orthopedic, or systemic disorders that could impair gait or balance