Neuromotor control during stair ambulation in individuals with patellofemoral osteoarthritis compared to asymptomatic controls

Is muscle activation diverse in females with isolated patellofemoral osteoarthritis contrasted with age-matched healthy controls during stair descent task?

“…In the same context, Wyndow et al (2019) disagreed with our findings as they documented an earlier activation of the VL during stair descent in patients with PF OA compared to healthy subjects. This discrepancy could be explained by different characteristics of the recruited subjects.…”

“…Regarding VMO activation onset, this study demonstrated that PF OA female patients and their healthy counterparts had a nonsignificant difference, and this result corroborated the previous findings of Brindle et al (2003), Aminaka et al (2011), Bolgla et al (2011), Rathleff et al (2013), Wyndow et al (2019), andYoosefinejad et al (2022). On the other hand, this non-significant difference is comparable to the findings of Motealleh et al (2015) as their results showed a delayed onset of VMO in male patients with PFP, and the reasons behind these comparable results were the heterogeneity of recruited subjects, muscle onset determination, Pain severity (11-NRS) -6.9 ± 1.74…”

“…Additionally, patients had radiographic proof of PF OA with a grade of less than 2 from posteroanterior views in accordance with the Kellgren-Lawrence (KL) osteoarthritis classification system to rule out the possibility of concurrent tibiofemoral arthritis (Hart et al, 2012). Patients were excluded if they met any of the following criteria: hip, lumbar spine, or foot pain that has persisted for more than 3 months or which required treatment; individuals who exercise for more than 2 hours per day or on alternate days; a history of fractures or surgeries in the lower extremities, spine, pelvis, hip, knee, or the foot; a hip or patellar subluxation or dislocation; an injury to the meniscus or any of the knee ligaments; fibromyalgia; neurological disorders; or systemic arthritis (Wyndow et al, 2019). Exclusion criteria specific for the healthy control group included any history of knee pain or pathology when engaging in any patellofemoral joint loading activities.…”

“…Most of the previous studies evaluated muscle activation in patients with PFPS (Brindle et al, 2003;Boling et al, 2006;Aminaka et al, 2011;Bolgla et al, 2011;Nakagawa et al, 2011;Rathleff et al, 2013;Motealleh et al, 2015;Yoosefinejad et al, 2022). Only two studies, to the best of the authors' knowledge, compared muscle activation during a stair negotiation task in patients with PF OA to that in healthy controls, one during stair descent (Wyndow et al, 2019) and other during stair ascent (Adel et al, 2022). Because of the paucity of studies evaluating muscle activation in patients with PF OA, a recent meta-analysis stated that the proof of altered muscle activation in this cohort is of only extremely low certainty (Siqueira et al, 2022).…”

Prevention of Knee Joint Wear in Patellofemoral Pain Syndrome when using Stairs: A Case Report

“…According to Cossley et al (2019) and Wyndow et al (2019), many individualized factors are essential in the mechanics of moving up and downstairs. However, considering the translation movement of the knee through the anterior tibial line to the toes, described by Fry et al (2003), based on existing guidelines (McLaughlin et al, 1978), was found to be one of the triggering factors of pain in the patient This case report's main objective was to apply a change of habit in the act of going up and down stairs, changing the movement dynamics, decreasing the risk of injury and worsening the patient's patellofemoral pain syndrome.…”