“…Systematic reviews of systematic reviews point to limited evidence concerning postural care even when populations and interventions are broadly defined (Effgen & McEwen, 2008;Novak et al, 2013;Ryan, 2012). Systematic reviews, most commonly relating to people with cerebral palsy, have generally found insufficient high-quality evidence for the effectiveness of a range of postural care interventions (Bouwhuis, van der Heijden-Maessen, Boldingh, Bos, & Lankhorst, 2015;Katalinic et al, 2010;Kolman, Ruzbarsky, Spiegel, & Baldwin, 2015;Legg, Davies, Raich, Dettori, & Sherry, 2014;Prabhu, Swaminathan, & Harvey, 2013;Winfield, Barker, Turner, & Quin, 2014). However, limited evidence suggests that special-purpose adaptive seating systems may improve activities and participation for those with cerebral palsy (Gross Motor Functioning Classification System (GMFCS) IV and V) (Angsupaisal, Maathuis, & Hadders-Algra, 2015); there are indicative findings for an effect of bony surgery in stabilizing the hip in severe cerebral palsy (Bouwhuis et al, 2015); and hip surveillance involving standardized radiological screening of the hip even in children with no symptoms has been found to be effective in reducing hip dislocation in children with cerebral palsy (Dobson, Boyd, Parrott, Nattrass, & Graham, 2002;Gordon & Simkiss, 2006;Hägglund et al, 2014;Novak et al, 2013).…”