Deep Knee Wounds: Healing and Care After Injury - Plastic Surgery

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Knee wound


I fell off my bike 7 days ago, landing about 2 centimeters away from my left kneecap.
The wound measures 6 cm in length, 1.5 cm in width, and 1.5 cm in depth, which likely reaches the bone.
The doctor who sutured it mentioned that it was very deep and that fat was visible.
They used a size 3 suture and made five loops (according to the nurse).
It has been a week since the suturing, and the area around the wound is still red and swollen.
Is this normal? Should I apply ice or heat, or is either option acceptable?

Luo Sir, 30~39 year old female. Ask Date: 2010/07/02

Dr. Zhou Hongzhang reply Plastic Surgery


It has been a week, and there should still be redness and swelling.
Generally, it takes time for the wound to fully heal before the swelling can gradually subside.
For the first 2-3 days after the injury, ice packs can be applied, and after about 3-4 days, heat therapy can be initiated.

Reply Date: 2010/07/02

More Info


When dealing with deep knee wounds, especially those that are significant enough to expose underlying tissues such as fat, proper care and understanding of the healing process are crucial. Based on your description, it appears that your injury is quite serious, and the fact that the doctor noted the depth of the wound and the use of sutures indicates that it requires careful monitoring.

Firstly, it is normal for a wound to appear red and swollen in the initial stages of healing. This is part of the inflammatory response, which is the body’s natural reaction to injury. The redness and swelling are typically due to increased blood flow and the accumulation of immune cells at the site of injury, which help to prevent infection and promote healing. However, if the redness and swelling persist or worsen, or if you notice increased pain, discharge, or fever, it is important to seek medical attention as these could be signs of infection.

In terms of wound care, here are some recommendations:
1. Keep the Wound Clean and Dry: Follow your doctor’s instructions regarding wound care. Generally, you should clean the wound gently with saline or mild soap and water, and avoid soaking it in water until it is fully healed. Keeping the area dry is essential to prevent infection.

2. Dressing Changes: If your doctor has provided specific instructions for changing the dressing, be sure to follow them. If the dressing becomes wet or soiled, it should be changed promptly. Use sterile materials to avoid introducing bacteria into the wound.

3. Ice and Heat Application: In the first few days after the injury, ice can be beneficial to reduce swelling and numb the area, which can help alleviate pain. Apply ice wrapped in a cloth for 15-20 minutes at a time, several times a day. After the initial swelling has decreased (usually after the first few days), you may switch to heat application to promote blood flow and healing, but be cautious not to apply heat directly to the wound.

4. Pain Management: Over-the-counter pain relievers such as acetaminophen or ibuprofen can help manage pain and reduce inflammation. Always follow the dosage instructions on the label or those provided by your healthcare provider.

5. Monitor for Signs of Infection: Keep an eye on the wound for any signs of infection, such as increased redness, warmth, swelling, or discharge that is yellow or green. If you experience fever or chills, contact your healthcare provider immediately.

6. Follow-Up Appointments: It is essential to attend all follow-up appointments with your healthcare provider. They will assess the healing process and determine if any further treatment is necessary, such as additional sutures or interventions.

7. Nutrition and Hydration: Proper nutrition plays a significant role in wound healing. Ensure you are consuming a balanced diet rich in vitamins and minerals, particularly vitamin C and protein, which are vital for tissue repair. Staying hydrated is also important for overall health and recovery.

8. Avoid Strain on the Knee: While healing, it is crucial to avoid putting too much weight or strain on the injured knee. Use crutches or a brace if recommended by your doctor to aid mobility without stressing the wound.

In conclusion, while some redness and swelling around your knee wound are normal, it is essential to monitor the injury closely and follow your healthcare provider’s instructions for care. If you have any concerns or if the symptoms worsen, do not hesitate to seek medical advice. Healing from deep wounds takes time, and patience is key to ensuring a full recovery.

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