Clinical Study
Medial Calcar Support and Radiographic Outcomes of Plate Fixation for Proximal Humeral Fractures
Table 3
Characteristics between patients with osteonecrosis and those without osteonecrosis.
| | Variables | Patients
w/ONa | Patients
w/o ON | value† | | ( = 20) | ( = 69) |
| | Age, mean years (SDb) | 68.4 (10.2) | 66.0 (10.5) | 0.362‡ | | Female gender | 16 (80.0) | 55 (79.7) | 1 | | Right side lesion | 11 (55.0) | 29 (42.0) | 0.305 | | AOc/OTAd type | | | — | | A | 4 (20.0) | 33 (47.8) | | | B | 9 (45.0) | 31 (44.9) | | | C | 7 (35.0) | 5 (7.2) | | | Neer type | | | — | | 2 parts | 4 (20.0) | 34 (49.3) | | | 3 parts | 8 (40.0) | 30 (43.5) | | | 4 parts | 8 (40.0) | 5 (7.2) | | | Shoulder dislocation | 3 (15.0) | 5 (7.2) | 0.372 | | Timely operatione | 10 (50.0) | 21 (30.4) | 0.106 | | Locked plating | 8 (40.0) | 29 (29.4) | 0.871 | | Varus collaps | 11 (55.0) | 18 (26.1) | 0.015 | | Comorbidity | | | | | Diabetes mellitu | 12 (60.0) | 16 (23.2) | 0.002 | | Arterial hypertension | 11 (55.0) | 35 (50.7) | 0.736 | | Coronary heart disease | 2 (10.0) | 6 (8.7) | 1 | | Stroke | 1 (5.0) | 5 (7.2) | 1 | | Chronic kidney diseas | 11 (55.0) | 13 (18.8) | 0.001 | | Chronic liver diseas | 8 (40.0) | 9 (13.0) | 0.019 |
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Note: data are number (%) of lesions, unless otherwise indicated.
Pearson chi-square test, unless otherwise stated; independent -test.
aON: osteonecrosis; bSD: standard deviation; cAO: arbeitsgemeinschaft für osteosynthesefragen; dOTA: orthopaedic trauma association; etimely operation: operation performed <8 hours after fracture; fvarus collapse: >20° varus on immediate postoperative follow-up radiographs.
Statistical significance ( < 0.05).
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