Why The Lapidus Bunionectomy Is The Best Procedure For Severe Bunions

Start Page: 44
49
Author(s): 
Neal Blitz, DPM, FACFAS

   3. Concomitant treatment of medial column hypermobility syndrome. If hypermobility is present (and deemed pathologic), then the Lapidus procedure offers the advantage of stabilizing the midfoot by decreasing midfoot motion. Some believe that severe bunions are the result of hypermobility and selecting procedures that do not address this may result in recurrence or secondary compensations. Though one may also address hypermobility with osteotomies, there is no current research to indicate the “best” method of surgical management. Nonetheless, the Lapidus procedure is indicated for the treatment of hypermobility.15

   4. Concomitant treatment of lesser metatarsal overload. In many clinical situations, the severe bunion is associated with lesser metatarsal overload (metatarsalgia) through an inefficient medial column (first ray). Stabilizing and realigning the first ray through a Lapidus procedure provides a stable construct to the medial column and also improves the efficiency of the peroneus longus.16 It is important to inferiorly translate (or plantarflex) the first metatarsal as part of the surgery to restore the weightbearing presence of the first metatarsal head.

   The Keller procedure is known to produce and exacerbate lesser metatarsal overload, and may be a poor procedure choice in patients who have metatarsalgia preoperatively. Implant arthroplasty carries a similar yet less infrequent postoperative lesser metatarsal overload risk, but one often must perform other procedures in conjunction to realign the first metatarsal.

   5. Avoiding elevatus plastic deformation risk. Postoperative elevatus from early weightbearing is a real risk with base wedge osteotomies. Though this occurrence was more common when wire fixation was in use, the risk still remains with screw fixation. The plastic deformation of an osteotomy site is the result of premature weightbearing causing an intrinsic remodeling of the first metatarsal. With a Lapidus, however, elevation can occur but it may occur concomitantly with fixation failure and nonunion. The elevatus with a Lapidus is extrinsic to the metatarsal and the effect of the failed fusion elevating through the nonunion site.

   6. Postoperative weightbearing. The ability for a patient to bear weight after a bunionectomy is often a deciding factor for procedure recommendation regardless of bunion size. Surgeons may make recommendations outside of specific intermetatarsal angle guidelines. Some doctors may even discourage bunion surgery altogether for the severe bunion because of a non-weightbearing protocol. Now that studies have emerged demonstrating that early weightbearing protocol healing rates are similar to that of non-weightbearing protocols, surgeons can consider the Lapidus as part of the potential surgeries when the post-op weightbearing is important.1-13

   7. Lapidus failure is often less disruptive than failure from other bunionectomies. A failed bunionectomy is always a challenge for both the surgeon and the patient. With Lapidus, failures are typically in the realm of nonunion. I believe that that nonunion is not a failure but a known potential outcome in a certain percentage of people (but that is beyond the scope of this article). Nonetheless, a painful nonunion of Lapidus is typically focal to the first tarsometatarsal joint and one can rectify this with revision and grafting. Any recurrent angular deformity is through the first tarsometatarsal joint and also undergoes repair at the revision fusion site. A failed metatarsal bunionectomy often results in an intrinsic deformity, which requires metatarsal osteotomy or a revision Lapidus to correct.

image description image description


Louis W. Nordeen, DPM, FACFASsays: December 2, 2011 at 10:08 am

I have found in over 150 bunions, that the Lapidus is not even comparable to the SCARF. When executed correctly, the SCARF has no comparison. And no joints are destroyed. I just don't get the whole thing with the Lapidus. I get plenty of stabilization with the SCARF, even with hypermobility pre-operatively. I stopped doing the Lapidus because I was getting too much post-op sesamoiditis (even 6 months post-op). The SCARF deserves much more attention and credit, and is very easy to perform through the medial incision. Just a thought. I love the Lapidus in some flatfoot corrections however.

Reply to this comment »
Vladimir Gertsik DPMsays: December 4, 2011 at 11:44 pm

Before justifying Lapidus, it would be prudent to answer one fundamental question: where is the primary pathology, the MPJ or MC joint? In most patients, it is the MPJ and proper MPJ rebalancing by various means will result in IM angle correction. For example, MPJ fusion will eliminate any need for Lapidus.

Reply to this comment »

Post new comment

  • Web page addresses and e-mail addresses turn into links automatically.
  • Lines and paragraphs break automatically.

More information about formatting options

Image CAPTCHA
Enter the characters shown in the image.