Dr. Keenen is an orthopedic spine surgeon specializing in minimally invasive surgery techniques. As a board-certified and fellowship-trained surgeon, he treats all relevant spinal conditions of the neck and low back. Dr. Keenen has a commitment to providing accurate diagnoses and effective surgical treatments that bring back functionality to patients who were previously suffering from pain.
Where Our Surgeries are Performed
Spine surgeries are performed by Dr. Keenen at the following hospital locations:
- Providence Milwaukie Hospital
- Providence Portland Medical Center
- Providence St. Vincent Medical Center
- Providence Willamette Falls Medical Center
- Legacy Emanuel Medical Center
- Legacy Meridian Park Medical Center
Dr. Keenen also performs surgery at the South Portland Outpatient Surgical Center. Lastly, Dr. Keenen implemented the first JCAH-certified spine center in Oregon.
Surgeries Offered at Pacific Spine
The following is a list of all surgeries offered by Dr. Keenen. We treat conditions of the cervical, lumbar, and thoracic spine. Click on any of the following links to learn more about the procedures or the incision, excision, or spine-stabilization aspects of the surgeries. We always encourage patients to educate themselves about the process. In any situation, all of our patients are in good hands and will be provided with an accurate briefing before any type of surgery.
Minimally Invasive Surgery
- Anterior Cervical Discectomy and Fusion (ACDF)
- Cervical Laminectomy Without Instrumentation
- Cervical Laminoplasty
- Posterior Laminotomy
- MIS Transforaminal Lumbar Interbody Fusion (TLIF)
- Lumbar Partial Discectomy
- Laminectomy and Uninstrumented Fusion
- Laminectomy and Instrumented Fusion
- Anterior Lumbar Interbody Fusion (ALIF)
What is Minimally Invasive Surgery?
The meaning of “minimally invasive” has changed throughout the years. Today, Dr. Keenen performs Minimally Invasive Surgery (MIS) which leaves the strong muscle fiber intact with the spine. MIS uses a smaller incision as well. Dr. Keenen has studied with national experts on MIS techniques. Our practice advocates the use of MIS whenever possible. However, only a consultation regarding your specific case will be able to reveal whether MIS is appropriate for you.
The surgical approach involves the surgeon’s decision to make one incision or two incisions and to approach the surgery from the posterior (back), anterior (front side), or lateral (flank side). These options differ and can affect the level of invasiveness and recovery time. Dr. Keenen makes these choices based on the type and location of your specific problem.
Before and After Surgery
Before surgery, Dr. Keenen believes in exercise therapy to stretch and strengthen the body. This is called pre-habilitation. In addition to rehabilitation after surgery, these processes can speed up recovery time and contribute to the long-term outcomes of surgery.
Surgery with Pacific Spine Specialists
The team at Pacific Spine, including Dr. Keenen and his personally trained staff, is dedicated to solving your pain and weakness issues caused by conditions of the spine. To learn more, contact us at our Toalatin, OR office.