A retrospective cohort study of adverse events in patients undergoing orthopaedic surgery

Table 1 Adverse events across all patients

Type of Adverse Event	Number of Events (percent of total)	90-Day Event Risk (%)	Mean Days from Surgery to Event
Prolonged pain^a	360 (31.36)	23.19	---
Persistent swelling	86 (7.40)	5.54	50.12
Draining of wounds	56 (4.87)	3.73	24.78
Non-healing of wound	56 (4.87)	3.61	30.38
Revision within 90 days of procedure	50 (4.36)	3.22	40.96
Acute blood loss anemia	50 (4.36)	3.22	1.92
Surgical site infection	44 (3.83)	2.84	27.09
Neuralgia	32 (2.78)	2.06	56.22
Death	25 (2.18)	1.61	30.44
DVT	21 (1.83)	1.35	21.95
Hospital stay longer than 30 days	10 (0.87)	0.64	41.70
Sepsis	4 (0.35)	0.26	24.00
Long term bleeding	2 (0.17)	0.13	13.00
Wrong site surgery	0	0	0
Other^b	362 (31.53)	23.32	17.47

^aProlonged pain was defined as pain requiring narcotics for greater than 42 days or clearly stated in the patient’s chart as prolonged pain
^bExamples of other adverse events: urinary tract infection, urinary retention, foot drop, fever, hematoma, pneumonia, bronchitis, myocardial infarction, allergic reaction to medication, hemarthrosis, venous thrombosis, significant blood loss with staple removal, heterotopic ossification

ISSN: 1754-9493