Post-Surgery Fever After Patella Fracture: Causes and Concerns - Orthopedics

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Hello doctor, I have been experiencing low-grade fever about a month after my patellar fracture surgery?


Hello, Doctor.
It has been about a month since my patellar fracture surgery.
Although the affected limb has some swelling and warmth in the knee, the surface of the wound has completely healed.
However, in the past two to three days, I have been experiencing intermittent low-grade fevers, with temperatures ranging from approximately 37.7 to 38.2 degrees Celsius, and around 37.2 degrees Celsius when not feverish.
I would like to ask the doctor what might be causing this.
Since the wound has fully healed, is there still a possibility of infection? Thank you, Doctor, for your assistance!

Winnie, 50~59 year old female. Ask Date: 2019/06/16

Dr. Li Yongheng reply Orthopedics


In the past two to three days, there has been a recurring low-grade fever, which may not necessarily indicate an infection following patellar fracture surgery.
Postoperative infections from fractures typically present with swelling and warmth around the knee, along with noticeable pain.
It is recommended that you return to the orthopedic outpatient clinic for an examination.

Reply Date: 2019/06/16

More Info


Post-surgery fever, particularly after a patella fracture, can be a concerning symptom for patients and their families. In your case, experiencing low-grade fever (between 37.7°C and 38.2°C) about a month after surgery, despite the wound being fully healed, raises several important considerations.

First, it is essential to understand that fever can be a normal part of the healing process following surgery. The body often reacts to surgical trauma with an inflammatory response, which can sometimes manifest as a mild fever. This is particularly true in the first few days post-surgery. However, when fever persists beyond the initial recovery period, it may indicate other underlying issues.

One potential cause of your low-grade fever could be a low-grade infection. Even if the surgical wound appears to be healed, there can still be internal infections, such as osteomyelitis (an infection of the bone) or an infection in the surrounding soft tissues. These infections may not always present with visible signs like redness or discharge, especially if they are deep-seated. Therefore, it is crucial to monitor for other symptoms such as increased pain, swelling, or changes in the color of the skin around the knee.

Another possibility is that the fever could be related to a systemic response to the surgery itself. Surgical procedures can lead to a transient inflammatory response, which might cause fluctuations in body temperature. This is often accompanied by other symptoms such as fatigue or malaise.
Additionally, consider other non-infectious causes of fever, such as a reaction to medications (like antibiotics or pain relievers) or even conditions unrelated to the surgery, such as a viral infection.
Given your symptoms, it is advisable to consult your orthopedic surgeon or healthcare provider. They may recommend further evaluation, which could include blood tests to check for signs of infection, imaging studies to assess the bone and surrounding tissues, or even a physical examination to evaluate the knee for any signs of complications.

In terms of recovery, while a low-grade fever may not directly impact the healing of the fracture itself, it can affect your overall recovery experience. Persistent fever can lead to increased fatigue and discomfort, which may hinder your rehabilitation efforts. Therefore, addressing the underlying cause of the fever is essential for a smoother recovery process.

In summary, while low-grade fever after surgery can be a normal response, persistent symptoms warrant further investigation to rule out infection or other complications. It is crucial to maintain open communication with your healthcare provider to ensure that any potential issues are addressed promptly, allowing you to focus on your recovery and rehabilitation.

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