Preoperative predictors of locomotor ability two months after total knee arthroplasty for severe osteoarthritis

Abstract

Objective. To identify preoperative predictors of locomotor ability 2 months after total knee arthroplasty (TKA). Methods. Sixty-five participants scheduled for a first TKA were recruited. The dependent variable was the distance covered during the 6-minute gait test 2 months after TKA. The independent variables, measured before surgery, were grouped into 3 categories: 1) personal; 2) organic system, and 3) capability variables. Multiple regression analyses were conducted to determine the best predictors of the dependent variable. Modified cross-validation of the model combining predictors from the three categories was obtained with 10 random samples derived from the original cohort by resampling with replacement. Results. Predictors were identified in the 3 categories: 1) gender, number of comorbidities, body mass index, 2) knee pain, flexion and strength, lower limb mechanical power, and 3) preoperative 6-minute gait distance. When these variables were modeled together only the preoperative 6-minute gait distance and knee pain and flexion remained significant (adjusted R 2 ‫؍‬ 0.66). Conclusion. Using variables easily measured before surgery, it is possible to predict with good accuracy locomotor ability 2 months after TKA.

Age and Comorbidities Affect Quality of Life in Patients With Osteoarthrtitis and Knee Replacement

“…Comorbidity is defined as a diagnosis or a medical condition related to health (22). The current study observed that 76% of the patients presented one or more comorbidities (22.4% one comorbidity, 53.6% two or more), which was in line with the average comorbidity in the Spanish Health System.…”

“…Bachmeier maintained that previous use of joint prostheses did not lead to a worse result after the surgery, as in the current study (17). Parent (22) and Katz (26) reported that preoperative factors were the predictors for mobility and associated outcomes.…”

“…The studies showed great variability. Wallace reported meniscectomy in 5.2% of all patients with TKA (18), Parent reported 32.3% of previous surgery of the lower limbs (meniscectomy was the most common one) (22), and Ostendorf reported a rate of 13.3% (10).…”

Influence of Preoperative Physical Function on Gait 1 Month After Total Knee Arthroplasty

“…The preoperative 6MWT also predicted gait endurance in the first month after TKA. This finding is supported by Parent and Moffet 37) , who showed that the preoperative 6MWT, knee pain, and knee flexion predict locomotor ability 2 months after TKA with good accuracy. This association probably reflects the fact that the baseline value of a given measure is often a strong predictor of the same measure later in time 38,39) .…”

Rango de movilidad y resultados funcionales en tres diseños diferentes de artroplastia de rodilla primaria. Estudio Comparativo. [Range of motion and functional results in three different designs of total knee arthroplasty].

“…4,5 Lograr una función adecuada depende de varios factores, tales como el rango de movilidad, la fuerza muscular, la estabilidad articular, el dolor y las expectativas del paciente. [6][7][8] El rango de movilidad posoperatorio es un aspecto importante en el resultado final. Ciertos pacientes hoy en día solicitan mayor rango de movimiento, porque sus estilos de vida son más activos, son más jóvenes o por requerimientos socioculturales.…”