Drug
Preemptive dose
Postoperative dose
Route of administration
Acetaminophen
975 mg
650 mg q6h
IV/PO
Paracetamol
2 g
2 g q4h
IV/PO
Celecoxib
400 mg
200 mg q12h
PO
Naproxen
500 mg
500 mg q12h
PO
Ketorolac
12–30 mg
15–30 mg q6h
IV/PO
Ibuprofen
600 mg
600 mg q6h
PO
Pregabalin
75 mg
75 mg q12h
PO
Gabapentin
300 mg
300 mg q24h
PO
Tramadol
–
50 mg q6h
PO
Oxycodone
–
10 mg q6h
PO
Breakthrough pain is managed with intravenous ketorolac 30 mg (or ibuprofen 600 mg), oral tramadol 50 mg, or oral oxycodone 10 mg. PCA is used only if the patient is not responding to any of the above-mentioned measures. Once PCA is used, fentanyl is the preferred drug and Dilaudid is used as a second line agent.
16.5 Overview
Pain management has significantly contributed to the overall satisfaction of patients undergoing TJA. The main principle of modern pain management in TJA patients is pain prevention rather than pain treatment. It is widely accepted that reducing opioid consumption and their side effects is crucial for successful “fast-track rehabilitation” after TJA. The reduction of opioid consumption is achieved by implementation of the multimodal pain management principles. Preemptive analgesia has a major role in TJA pain management by lowering the initial inflammatory response related to the surgery. The current literature strongly supports the use of NSAIDs, acetaminophen, and gabapentinoids prior to the incision. There is substantial evidence showing that spinal and/or epidural anesthesia is superior to general anesthesia in terms of venous opioid-induced adverse events, thromboembolism, intraoperative blood loss, respiratory complications, and mortality. Local analgesia, either by infiltration of the surrounding tissue or by intraarticular continuous administration, has been shown to reduce opioid consumption and their related side effects, and its usage is rapidly expanding during the recent years. The cumulating effects of other treatment options are not as well studied as the former medications in the setting of multimodal pain management. There is still conflicting and insufficient data regarding the use of tramadol, NMDA receptor antagonists, cryotherapy, and the preferred nerve blockade, and substantial research is warranted before a widely accepted protocol could be proposed.
Key Points
Modern pain management in TJA patients is pain prevention rather than pain treatment.
Reducing opioid consumption and their side effects with multimodal pain management is crucial for successful “fast-track rehabilitation” after TJA.
Spinal and/or epidural anesthesia is preferred rather than general anesthesia.
Local analgesia, either by infiltration of the surrounding tissue or by intra-articular continuous administration, has been shown to reduce opioid consumption.
The use of tramadol, NMDA receptor antagonists, cryotherapy, and the preferred nerve blockade is still under scrutiny in order to define their correct application.
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