The findings such as muscle hypertonicity, joint malposition, lack of joint surface congruency, nerve compression, antalgic posture, connective tissue/adhesions or contracture, nucleus pulposus malposition, and meniscoid entrapment are examples of which concept?

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These findings all point to a joint not moving freely because of structural or soft-tissue impediments, which is captured by the concept of potential joint restriction. When a joint’s surfaces are malformed or misaligned (joint malposition or lack of surface congruence), when soft tissues form adhesions or contractures, or when intra-articular structures like a disc portion or meniscoid encroach on the movement space, the result is altered arthrokinematics. The body often responds with muscle guarding (muscle hypertonicity), protective posture (antalgic posture), or even nerve compression due to reduced joint space. Nucleus pulposus malposition and meniscoid entrapment illustrate how intra-articular components can impede motion, not just cause localized pain. Taken together, these signs describe a joint with restricted or potentially restricted motion, which is why this option best fits.