What are the most common symptoms of puncture wound of the knee?

Pain, blood, hole: A puncture wound of the knee will manifest as a hole which usually bleeds when fresh. It is generally painful unless very small. It is important to get a history of what caused the puncture to properly treat it. Besides washing out and using an antibiotic cream on the wound, some puncture wounds may need to be treated with a tetanus shot.

Depends on the depth: A simple puncture wound if not too deep and from clean object would hurt and possibly ooze for a few days. If the puncture were from a contaminated object the risks are much greater. If deep enough to penetrate into the patellar bursa or worse into the joint space it could lead to severe swelling, pain, and redness causing fever and chills and if untreated a septic knee joint.

External wound skin: Puncture sites that bleed freely, with or without scabbing may indicate the site of injury. History of falling on something which is long enough, sharp enough to produce a skin violation is enough. If in doubt, seek medical attention where an expert can evaluate site, cause of wound, potential risks and needs for antibiotice coverage. Swelling and reddness are danger signs.