Children with USCP have difficulties to use their hands and feel bothered with their performance.

Extensive caregiver assistance may limit the child's performance in bimanual activities.

Intervention should consider efficacy, time, and the child feeling bothered in bimanual activities.

Almost one in three trials included in the NICE LBP CPG use suboptimal comparators.

Invasive and non-surgical trials used more suboptimal comparators than pharmacological trials.

Use of suboptimal comparators in a substantial proportion of trials may be misleading some CPGs leading to inconsistencies in recommendations.

Using suboptimal comparators made treatments less likely to be recommended for use by NICE LBP CPG.

This manuscript proposes a new physical therapy diagnostic concept.

This proposition is based on the World Health Organisation classifications.

This model goes beyond the health problem.

It includes the impact of relevant impairments on everyday activities and performance.

It is applicable to all patients in all contexts and practice domains.

There is a high variation in measuring causal beliefs about low back pain.

No measurement exists that clearly isolates causal beliefs from other belief domains.

There is a lack of studies exploring longitudinal relationships between causal beliefs and health outcomes.

Causal beliefs are just one element of a complex beliefs construct, and there is very little quantitative evidence from which its unique relevance can be judged.