KEY TAKEAWAYS:

  • Persistent bunion pain may make you a candidate for hardware-free MIS for bunions. Hardware-free MIS for bunions may be considered when your pain interferes with walking, exercise, work, or wearing comfortable shoes despite conservative care.
  • Your foot structure matters. Bunion severity, bone alignment, joint condition, stability, and bone quality help determine whether a hardware-free minimally invasive approach is appropriate.
  • Your overall health affects candidacy. Healthy circulation, adequate bone quality, and the ability to heal properly are important considerations before surgery.

A bunion is a structural change in the front of the foot that causes the big toe to angle toward the smaller toes while the first metatarsal shifts in the opposite direction. This creates the familiar bump along the inside of the big-toe joint. Bunions can be painful when shoes rub against the bump or when the altered alignment changes how pressure moves through the foot. Foot with a bunion

If you have pain associated with bunions, you may wonder if you’ll need surgery and the placement of permanent of screws and plates to correct them. For patients who are good candidates, hardware-free minimally invasive surgery (MIS) for bunions offers another possibility. This approach uses small incisions to correct the bunion without leaving permanent hardware behind. However, the procedure is not right for every foot. Our skilled podiatrist, Dr. Sarah Stewart, discusses the basic criteria for hardware-free bunion MIS and how to help determine if this procedure is right for you.

How Patients Are Assessed for Hardware-Free Bunion MIS

Even if you have a bunion on the side of your foot, that doesn’t necessarily qualify you for hardware-free MIS. A podiatrist must consider the symptoms, bunion deformity, joint health, bone quality, circulation, overall health, and ability to follow recovery instructions.

Potential candidates may be assessed using the following criteria:

  • The severity and structure of the bunion. MIS is commonly used for mild and moderate hallux valgus, while selected severe deformities may require individualized surgical planning. Weight-bearing X-rays and a physical examination help determine whether a minimally invasive approach can provide the correction your foot requires.
  • Your bone health. Normal or mildly reduced bone density is generally more favorable so that the bone that’s cut remains adequately stable while it heals.
  • If you have osteopenia. This condition doesn’t automatically disqualify you from MIS; however, Dr. Stewart will need to consider the degree of bone loss, X-ray/CT appearance, age, fixation strategy, healing risks, and postoperative weight-bearing plan.
  • If you have osteoporosis. This condition requires more careful assessment to determine how likely the cut surfaces are likely to unite and tolerate progressive weight-bearing.  Osteoporotic bone has reduced strength, so the surgeon has to consider whether the bone can tolerate the stresses.
  • Your overall health. It’s important that your overall health can support proper healing. Your body must also be able to heal the bone and surgical sites. Good circulation, adequate bone quality, and the absence of active infection are critical to support healing. Smoking deserves particular attention because it can interfere with wound and bone healing. Circulation problems can also increase the risk of wound-healing difficulties after foot surgery.

Why You Might Not Be a Candidate for Hardware-Free Bunion Surgery

Wanting a smaller incision or avoiding permanent hardware does not necessarily make hardware-free MIS the safest surgical choice. Some foot structures and health conditions call for a different approach. Factors that may make you a less-qualified candidate include the following:

  • You want surgery primarily for appearance. Bunion surgery is intended to address pain and functional problems rather than simply make a foot look straighter.
  • You have severe joint arthritis or significant stiffness. When the big toe joint has substantial damage, another procedure may be more appropriate.
  • You have significant circulation or nerve problems. Severe peripheral vascular or neuropathic conditions can interfere with safe healing and may change whether surgery is recommended.
  • You have an active infection or uncontrolled medical issues. Surgery may need to wait until health issues are addressed.
  • Your foot requires a different type of structural correction. Severe deformity, certain flatfoot patterns, substantial joint instability, or other structural problems may make another surgical technique a better choice.