What is knee arthroscopy?
Knee arthroscopy is a minimally invasive surgical procedure used to diagnose and treat intra-articular knee pathologies. This technique allows for both visual and tactile inspection of all intra-articular structures of the knee, including the anterior and posterior cruciate ligaments, the medial and lateral menisci, as well as the articular cartilage covering the bones.
What is the anatomy of the knee?
The knee is one of the largest and most complex joints in the human body, subjected to significant mechanical loads and force variations during daily activities. As such, it is particularly vulnerable to injuries and degenerative changes.
The knee joint is formed by the articulation of the femur and the tibia. The bone surfaces are covered by articular cartilage, and the anterior cruciate ligament (ACL) connects them. Between the articular surfaces lie the medial and lateral menisci, which act as shock absorbers and stabilizers within the joint.
What happens during the surgical procedure?
An arthroscope is a small fiber-optic instrument that allows the surgeon to visualize and operate inside the joint. It typically has a diameter of approximately 5 mm and a length of 18 cm. By using the arthroscope, the surgeon can observe the joint’s interior in magnification and perform the procedure through small incisions (portals).
The camera attached to the arthroscope projects a real-time image of the knee joint onto a monitor. The surgeon can manipulate the arthroscope to examine different areas within the joint. Careful attention is always paid to the protection of surrounding nerves and blood vessels.
How long does the procedure take?
The duration of the surgery depends on the surgeon’s experience and the nature of the intra-articular pathology. For example, an arthroscopic partial meniscectomy typically takes about 30 minutes, while ACL reconstruction using an autograft may take approximately one hour.
What type of anesthesia is used in knee arthroscopy?
Prior to the procedure, the patient receives anesthesia, which may be general, local, or regional (e.g., spinal or epidural anesthesia), depending on the case and anesthesiologist’s recommendation.
What are the advantages of knee arthroscopy?
As a minimally invasive technique, arthroscopy offers several advantages:
- No incision of muscles or tendons is required
- Minimal intraoperative bleeding
- Very small incisions result in minimal scarring
- Faster recovery and return to daily activities
- Shorter rehabilitation period
Are there any complications associated with arthroscopy?
Complications related to arthroscopic surgery are generally rare and manageable.
They may occur intraoperatively, typically involving the use of specific instruments, or postoperatively, with the most common being inflammation, superficial thrombophlebitis, or postoperative swelling.
What is the rehabilitation process?
Rehabilitation depends on the type of surgery performed. For minor procedures, a few simple exercises performed at home may be sufficient.
In most cases, however, a structured rehabilitation program is recommended, regardless of the surgical intervention. Generally, the more complex the procedure, the more specialized and prolonged the physiotherapy program will be.
Summary
Knee arthroscopy is a well-established, minimally invasive surgical technique used for the diagnosis and treatment of various joint disorders.
The goal of the procedure is to eliminate or alleviate the patient’s symptoms. However, the outcome depends on the nature of the underlying condition, the potential for improvement after surgery, and the patient’s adherence to the postoperative rehabilitation program.
Arthroscopy has revolutionized the way joint injuries are treated and has significantly advanced the approach to joint care.