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Correlation Of The Squat-And-Smile Test Against Other Patient Reported Outcome Scores In Knee Pathology


Johan Le Roux, FC Ortho, MMed, DA (SA), MB,ChB
SOUTH AFRICA

Correlation Of The Squat-And-Smile Test Against Other Patient Reported Outcome Scores In Knee Pathology

Johan Le Roux, FC Ortho, MMed, DA (SA), MB,ChB, SOUTH AFRICA Roopam Dey, PhD, SOUTH AFRICA Simone Deichl, MD, SOUTH AFRICA Maritz Laubscher, MD, SOUTH AFRICA Michael Held, MD, PhD, SOUTH AFRICA

Orthopaedic Research Unit, Department of Orthopaedics, Groote Schuur Hospital, University of Cape Town, Cape Town, Western Cape, SOUTH AFRICA

2021 Congress   ePoster Presentation     Not yet rated

 

Anatomic Location

Knee Patellofemoral Tibio - Fibular

Anatomic Structure

Capsuloligamentous Complex Cartilage Ligaments Synovial Meniscus Medial Lateral

Diagnosis / Condition

Osteoarthritis Arthritis Instability

Diagnosis Method

Physical Examination X-ray

Sports Medicine

Evidence Based Medicine

Treatment / Technique

Arthroplasty

Cartilage

Cartilage Injuries

Patellofemoral

Patellofemoral Osteoarthritis

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Summary: For patients with knee pathology, squat depth correlates moderately with other patient reported outcome measures (PROM) and could therefore be used in settings for which conventional PROM have limited application.

Background

The use of Patient Reported Outcome Measures (PROM) for knee pathology may be affected by socioeconomic factors, language barriers and time constraints in busy outpatient clinics. The Squat and Smile Test (SST) is an example of such a test that has previously been validated for femur fractures. The aim of this study was to validate the SST against other PROM in patients with knee pathology.

Methods

Patients presenting to a subspecialist knee clinic in a large hospital in sub-Saharan Africa were approached to participate. They were asked to squat and the depth of the squat as well as the need to support themselves were classified into 4 categories. To describe their pain, participants also selected one of three smiley faces (unhappy, neutral, smiling). These test scores were correlated to the patient’s Knee Injury and Osteoarthritis Outcome Score (KOOS), Lysholm Tegner Score and EQ5D scores.

Results

Seventy patients (median age 53.4 years) were included. The Squat depth correlated moderately with the KOOS score (r = 0.56) and poorly with the EQ5D and Lysholm scores (r=0.46; r= 0.43). The need for squat support had poor correlations with the KOOS, EQ5D and Lysholm scores (r= 0.29; r=0.31; r=0.31) as did the Smiley Face component (r=0.40; r=0.32; r=0.30).

Conclusion

For patients with knee pathology, the squat depth correlates moderately with other PROM. It could therefore be used in settings for which conventional PROM have limited application. Support needed to squat, and a visual analogue scale of smiley faces had poor correlation when compared to other knee PROM and should not be used for the assessment of knee pathology.

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