Lapifuse

Question 1

What is lapifuse?

Answer 1

A “Triplanar Correction” system to correct foot deformities caused by bunions

Question 2

3 benefits of lapifuse?

Answer 2

1. Improved appearance
2. Pain reduction
3. Improved mobility

Question 3

How does the lapifuse procedure work? 4 steps summarized

Answer 3

1. Surgeon will make a few small incisions to expose the affected joint
2. Remove cartilage.
3. Rotate the first mtp joint to return it to its proper alignment
4. Secure correction - titanium plates screwed into the joint.

Question 4

Define triplane correction

Answer 4

Correcting the deformities in all 3 cardinal planes; Transverse plane, saggital plane, and frontal plane

Question 5

What is the lapidus procedure able to correct 3 things on planes

Answer 5

Surgeons are able to correct the intermetatarsal 1-2 angle (transverse plane) , hyper mobility (saggital plane) , and the sessamoid position and rotation of the metatarsal (frontal plane).

Question 6

3 different planes

Answer 6

Transverse, frontal, saggital

Question 7

Foot anatomy

Answer 7

Question 8

Define sasamoid position

Answer 8

A bone embedded in a tendon. 2 pea shaped bones in the ball of the foot beneath the big toe

Question 9

Physical exam, what do we look for to perform lapidus procedure?

Answer 9

First ray- hyper mobility ( increased arc of motion) 5mm
Transverse, saggital plane excursion ( range of movement)

Question 10

Summary of what to look at to perform lapidus - 4 things

Answer 10

1. Detailed clinical and radio graphic exam
2. Joint congruency ( joint inspection) - degerative changes at first metatarsal
3. Mild, moderate, or severe bunion
4. Age

Lapidus is time tested and reproducible , no significant recurrence

Question 11

Tmt joint

Answer 11

The connections between the tarsals and metatarsals in the middle of the foot

Question 12

Answer 12

Question 13

Lapifuse system pieces

Answer 13

Joint prep kit, Triplanar clamp, lapifuse targeting guide, standard & trans-metatarsal titanium plates

Question 14

plate options

Answer 14

1. Standard, 5 hole 0mm & 2mm step
2. Trans-metatarsal 6 hole 0mm & 2mm step
   Both available in right & left

Question 15

All plates have how many locking holes

Answer 15

All plates have 2 locking holes for proximal fixation, and 2 locking holes for distal fixation.
All plates have a compression slot
The 6 hole trans-metatarsal plate has an second metatarsal locking hole for additional stability

Question 16

Screws

Answer 16

Laifuse system includes 3.5mm diameter locking . and non locking screws,
Ranging from 12mm to 40mm in 2mm increments

Question 17

Interfragmentary (cross) Screw

Answer 17

Available in screw lengths from 35mm to 45mm in 2.5mm increments
Single diameter of 4.0mm
First screw put in at angle from first metatarsal to medial cuneiform to body of intermediate cuneiform.

Question 18

Joint prep kit pieces

Answer 18

Single use osteotome
Curette
25mm drill

Question 19

Lapifuse clamp

Answer 19

Clamp
Ratcheting feature
Hook

Question 20

Lapifuse targeting guide

Answer 20

targeting guide uses fluoroscopic feedback for visualization of the inter fragmentary screw placement