Table 3: Objective uninjured to fractured arm differences in 77 patients a mean 19 years after isolated Colton type I, type II transverse or oblique or type II comminuted fractures of olecranon. Data are provided as mean ± SD or mean with 95% confidence intervals (95% CI). Statistically significant differences highlighted in bold text. There were no statistically significant differences when comparing the uninjured to fractured arm differences between the 3 types of fractures.

- Type I (n =14) Type II Transverse or Oblique (n = 46) Type II Comminuted (n = 17)
- Fractured Arm Uninjured Arm Uninjured to Fractured Arm Difference Fractured Arm Uninjured Arm Uninjured to Fractured Arm Difference Fractured Arm Uninjured Arm Uninjured to Fractured Arm Difference
Elbow flexion (degrees) 144±6 144±6 0 (0.0, 0.0) 140±10 143±6 3 (–0.0, 5.2) 137±7 138±6 1 (–1.2, 3.0)
Elbow extension (degrees) 2±5 0±10 –2 (–5.6, 2.1) –5±10 –2±7 4 (1.2, 6.3) –6±11 –1±4 6 (0.4, 10.8)
Forearm pronation (degrees) 85±7 86±7 1 (-0.8, 2.2) 84±11 85±7 1 (–1.3, 3.9) 83±11 83±12 –1 (–1.8, 0.7)
Forearm supination (degrees) 83±20 84±17 1 (–0.8, 2.2) 85±9 86±5 2(±0.9, 3.9) 85±9 85±8 0 (–0.3, 0.9)
Elbow valgus angle (degrees) 5±6 7±9 1 (–1.7, 4.5) 10±6 8±4 –1 (–2.7, –0.2) 7±4 6±4 –1 (–3.1, 0.6)
Wrist flexion (degrees) 71±14 74±9 3 (-1.8, 8.2) 66±14 67±12 1 (±1.5, 3.1) 67±10 67±10 –1 (–2.4, 1.2)
Wrist extension (degrees) 66±9 67±9 1 (–0.3, 1.8) 62±14 61±12 –1 (–2.3, 1.1) 63±12 63±13 1 (–4.7, 6.0)
Circumference upper arm (cm) 25.7±3.0 25.9±3.1 0.2 (–0.0, 0.4) 27.1±2.9 27.1±2.9 0.0 (–0.2, 0.2) 28.2±2.8 28.2±2.6 0.0 (–0.4, 0.4)
Circumference forearm (cm) 24.3±2.2 24.3±1.9 0.1 (–0.3, 0.5) 24.7±3.1 24.6±3.1 0.0 (–0.2, 0.1) 25.5±3.3 25.5±3.1 0.0 (–0.6, 0.5)
Grip strength (kp/cm2) 0.77±0.39 0.84±0.39 0.06 (0.01, 0.12) 0.77±0.39 0.84±0.39 –0.00 (–0.03, 0.03) 0.86±0.31 0.87±0.27 0.01 (–0.06, 0.10)