Table 1: Patient Group Ratios of Re-Examined to Treated Patients and their Average Follow-Up Findings with Reference to Ulnohumeral Extension/Flexion, Lower Arm Rotation (Pronation/Supination), Average Instability Measured in ° During Varus-Valgus Stress and the Obtained MEPS (Rounded Values, No Significant Differences)

Groups Re-Examined/Treated Patients Ulnohumeral Mobility Lower Arm Rotation Valgus Varus MEPS
TT 12/16 106° 173° 12° 10° 81
ProxUlnTT 15/16 92° 124° 78
LuxPCU 8/11 114° 163° 79
MontPCU 1/1 70° 180° 75
IsoPCU-F 3/4 115° 142° 71
PCURH-F 7/8 131° 169° 89
OlePCU-F 2/2 120° 170° 100

Key: TT = terrible triad, ProxUlnTT = proximal ulnar fracture with TT, LuxPCU = PCU fracture with luxation, IsoPCU-F = isolated PCU fracture without luxation, PCURH-F = PCU and radial head fracture without luxation. OlePCU-F = fracture of the olecranon with PCU-fracture without luxation, MontPCU = metaphysial ulna fracture with PCU-fracture and radial head luxation. ° = Degree, measured with a protractor.