Download BioPro® Modular Thumb Implant

BioPro® Modular Thumb Implant
The BioPro® Modular
Thumb Implant is a
simple, durable, metallic hemi-arthoplasty
implant prosthesis for
the carpal metacarpal
joint capable of providing the patient with
years of pain relief and
restored motion.
It is indicated for patients with osteoarthritis, rheumatoid arthritis, and degenerative
changes of the first
CMC joint associated
with pain, dislocations,
and deformities.
The implant was first
designed by orthopedic surgeon Charles
O. Townley, MD of Port
Huron, MI in the 1990’s.
Dr. Townley’s concepts
and ideas have been
widely accepted in orthopedics for over 50
years.
What is this for?
The BioPro® Modular Thumb Implant is intended for the
treatment of basilar thumb arthritis that has not responded to conservative treatment. Some of the conservative treatments include: anti-inflammatory medications,
splinting and injections of cortisone-type medications.
What is basilar thumb arthritis?
Arthritis is a disease that causes stiffness and inflammation in affected joints. Arthritis can affect any joint in your
body, but commonly occurs in the base of the thumb; thus
the name basilar thumb arthritis. It is most common in
women over the age of 40, but can affect anyone and
occur in both thumbs.
Two bones form the joint: the proximal metacarpal and
the trapezium. This is frequently referred to as the carpal
metacarpal joint (CMC joint). The ends of the bones are
covered with cartilage, which acts as a cushion, allowing
the bones to move smoothly in the joint. Arthritis destroys
this cartilage and the bone ends grind together causing
pain and inflammation. If left untreated, the smaller bone
(the trapezium) may collapse, making straightening of the
thumb difficult.
What are the symptoms and causes?
Most commonly, the main symptom is pain in the base of the thumb (near the wrist) when
you lift something with your thumb and finger or pinching type movements, turning a door
handle or key, or unscrewing a jar lid. Sometimes you may drop things while trying to grip
them or the weather makes your thumb ache. There may be swelling in the joint and the
thumb may become stiff or there may be some deformity. There are different causes of
basilar thumb arthritis, but it typically occurs because of wear and tear on the thumb joint.
Previous injuries or fractures make it more common at a younger age. Repetitive movements such as grabbing, twisting and turning objects may worsen the condition.
BioPro® Modular Thumb Implant
Questions to Ask
Your Doctor
Am I a candidate
for surgery?
How long is the
recovery process?
What are my
alternatives?
Do you practice
this procedure?
Is my arthritis
localized to my
CMC joint?
What are some of the treatments?
Usually, your doctor’s diagnosis is based on the description of your pain, by looking
at the way your thumb looks and moves, and by taking an x-ray of your hand. The
x-ray will show how much damage has been done and what treatment options may
help your discomfort. Your doctor may prescribe an anti-inflammatory, place you in
a splint for 3-6 weeks or inject the joint with cortisone. If these treatments do not
help, you may be sent to see a surgeon to evaluate your discomfort.
There are various surgical treatments available such as a fusion of the joint or
a tendon graft. Fusion is frequently unacceptable to many patients because of
the loss of movement in the joint. The tendon graft can result in thumb shortening, compromised pinch and grip strength and changes in cosmetic appearance.
The treatment we are discussing is called an Interpositional Arthroplasty with the
BioPro® Modular Thumb Implant. This procedure has the advantage of maintaining
movement and a firm foundation for pinch and grip strength maintenance. It also
minimizes frequent complications of other procedures; such as dislocations, material failure, and complicated invasive soft tissue reconstructions.
What happens during surgery?
The bone at the base of the metacarpal is removed and the implant is placed in
the damaged joint. A new socket that provides a smooth surface for the implant to
move in is formed. Your hand is placed in a cast that keeps the thumb joint in a
stable position while your healing begins. You will be in a cast for 4-6 weeks, depending on your healing. After your cast is removed, you may have hand therapy
to regain your strength and motion. Most patients have unrestricted activity 8-12
weeks after surgery.
Ask your doctor about the BioPro® Modular Thumb Implant today!
A recent study, published in May 2012 in Clinical Orthopedics and Related Research,
featured the use of the BioPro® Modular Thumb Implant for treatment of trapeziometacarpal osteoarthritis. The study included 159 basal joint hemiarthroplasties to treat osteoarthritis of the trapeziometacarpal joint. Of that, 143 thumbs were available for review. Pain relief occurred in 135 thumbs, function improved in 138 thumbs, 139 thumbs
were excellent or good in overall assessment, and 142 thumbs had good or excellent
cosmetic appearance. The mean postoperative Buck-Gramcko Score was 49(excellent) and the implant showed a 94% suviorship at a mean follow up of 72.1 months.
Contact us at (810)982-7777 or [email protected]
The Modular Thumb implant is intended to basal thumb (CMC or carpometacarpal) joint arthritis. The Modular Thumb implant is not recommended for patients who in addition to basal thumb
arthritis, have arthritis in adjacent joints, such as the trapezium/scaphoid joint. As with any surgical procedure there are risks associated with hand surgery that you should discuss with your
surgeon. These potential risks and complications with products used to treat thumb arthritis include infection at the incision site, pain, inflammation and swelling at implant site, allergic reaction
to implant material(s), loosening or dislocation of implant resulting in revision surgery, deterioration or loss of bone, over-production of bone, blood vessel blockage, and negative bodily response
due to implant rejection and/or implant wear debris. In addition, your weight, age, and medical history determine your specific risks. Ask your doctor if hand surgery is right for you.
Brochure No. 20053