Figure 5From: Scapular deformity in obstetric brachial plexus palsy and the Hueter-Volkmann law; a retrospective study Subluxation and VS/DS. Relation between joint subluxation and ratio of scapular length on ventral and dorsal aspect (VS/DS) in the affected shoulder. Increasing posterior subluxation (normal value is 50%, with increasing subluxation this percentage decreases) leads to predominant reduction of scapular length on the posterior side, which leads to an increased ratio VS/DS.Back to article page