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Pain Course after Total Knee Arthroplasty within a Standardized Pain Management Concept: A Prospective Observational
Melanie Schindler1, Stephanie Schmitz1, Jan Reinhard1
1Department of Orthopedics, University Medical Center Regensburg, Asklepios Klinikum Bad Abbach, 93077 Bad Abbach, Bavaria, Germany.
Journal of Clinical Medicine
|December 11, 2022
Summary
Postoperative pain after total knee arthroplasty (TKA) initially decreases then rises, influenced by factors like gender, BMI, and leg axis. Understanding these pain patterns is crucial for improving patient satisfaction following TKA.
Area of Science:
- Orthopedic Surgery
- Pain Management
- Rehabilitation Medicine
Background:
- Total knee arthroplasty (TKA) is a significant surgical procedure associated with considerable postoperative pain.
- Patient dissatisfaction after TKA can be as high as 30%, underscoring the need for effective pain management strategies.
- Understanding pain trajectories and influencing factors post-TKA is essential for improving patient outcomes.
Purpose of the Study:
- To evaluate the development of postoperative pain within the first four weeks following total knee arthroplasty (TKA).
- To identify demographic and perioperative factors that influence pain intensity after TKA.
Main Methods:
- A prospective cohort study involving 103 patients undergoing TKA.
- Postoperative pain was measured using a Numeric Rating Scale (NRS).
- Demographic data and perioperative parameters were analyzed for correlation with pain scores.
Main Results:
- Pain scores decreased during the first week post-TKA (Day 1: 5.8 NRS; Day 8: 4.6 NRS).
- Pain intensity increased around Day 9, then steadily declined by Day 29 (3.0 NRS).
- Female gender, lower body mass index (BMI), and a preoperative valgus leg axis were significantly associated with higher postoperative pain.
Conclusions:
- Increased pain after the first week may be linked to intensified rehabilitation and physiotherapy.
- Specific patient characteristics (female, low BMI, valgus leg axis) require tailored pain management approaches.
- Addressing identified influencing factors can enhance patient satisfaction and outcomes after TKA.
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