OTA Comprehensive Fracture Course for Residents

Transcription

OTA Comprehensive Fracture Course for Residents
OTA Comprehensive Fracture Course for Residents
MODULE FACULTY, PRINCIPLES, AND SCHEDULES
GERIATRIC MODULE
Principles:
Femoral Neck Fractures
1. Femoral neck fractures are classified as either stable (nondisplaced) or unstable (displaced).
2. Non-displaced fractures are usually treated with internal fixation with low rates of healing
complications.
3. Displaced fractures are associated with higher rates of nonunion and osteonecrosis and are
treated with either internal fixation or prosthetic replacement, dependent on patient
characteristics such as age, activity level and mental status.
4. In young adults, a displaced femoral neck fracture should be treated emergently with anatomic
reduction and internal fixation.
5. Hemiarthroplasty is a good treatment option for displaced femoral neck fractures in older
individuals who have multiple medical problems and are relatively inactive.
6. In active healthy older individuals, the treatment of displaced femoral neck fractures is
controversial with multiple studies reporting the best functional results with total hip
arthroplasty.
Intertrochanteric Fractures
7. Intertrochanteric fractures are classified as either stable or unstable based on the ability of an
internally stabilized reduced fracture to withstand physiologic loads.
8. In general, fractures with a large posteromedial fragment or disruption of the lateral wall of the
proximal femur are considered unstable.
9. Sliding hip screws and IM hip screws are both acceptable implants for stabilization of
intertrochanteric hip fractures.
10. With use of either a SHS or IM device, the lag screw should be centered within the femoral
head such that the tip apex distance is <25mm
11. There is no Level 1 evidence which favors one type of implant for routine IT hip fracture
although there is evidence which supports use of an IM device for stabilization of
subtrochanteric fractures.
Periprosthetic Fractures
12. Most classifications of periprosthetic fracture are based on both fracture location and implant
stability.
13. Treatment is dependent on fracture location, implant stability, bone stock and patient age and
medical condition.
14. In general, if the implant is loose, a revision arthroplasty is performed.
15. Stable fixation can involve use of plates and screws, IM nail, cerclage wire/cable and/or
allograft struts.
Locked Plates
16. Conventional plate fixation relies on the screw purchase in the bone creating compression of
the plate to the bone.
17. Non-locking implants are thought to fail sequentially, one at a time, as if the plate were pried
off the bone from one end.
18. In locked plate fixation, the screw and plate create a fixed angle construct. It does not rely on
screw purchase, plate to bone compression, or frictional forces for stability. As long as the
patient load does not exceed the compressive strength of the bone surrounding all the screws
(acting in unison), the construct is stable.
19. Failure of locking plates requires the entire construct to fail in unison, as the load is more
evenly shared among the screws.
20. The most common indications for the use of locking plates is metaphyseal comminution and
poor bone quality (osteoporosis).
21. Pure locking constructs require the surgeon to obtain fracture reduction before insertion of the
locking screws.
Osteoporosis
22. An insufficiency fracture is one that occurs during normal weight-bearing; a fragility fracture is
one that results from a fall from a standing height.
23. Osteoporosis is defined as a Bone Mineral Density (BMD) 2.5 SD below the young adult average
value (T).
24. Osteoporosis is an imbalance in the removal and replacement of calcium. It is not an organic
matrix or mineralization defect. It results in loss of trabecular plates, cortical thinning and
structural weakening.
25. Fracture management for patients with osteoporosis involves use of IM devices, long length
locked plates, augmentation (biologic cements, strut grafts), or prosthetic replacement.
26. Osteoporosis treatment should: 1) address potential risk factors (alcohol and tobacco), 2)
promote weightbearing exercises and supplementation with calcium and vitamin D, and 3)
prescribe pharmacologic intervention when indicated (T-scores < -2.5 without other risk factors
or T-scores < -1.5 with other risk factors).
27. Pharmacological therapy can involve either anti-resorptive medication (hormonal replacement
therapy, Biphosphonates, Selective Estrogen Receptor Modulators) or bone forming drugs
(Teriparatide).
28. Long-term use of Bisphosphonates has been associated with atypical long bone stress fractures.
Peri-operative Considerations After Hip Fracture
29. Surgery after hip fracture should be performed in a timely fashion, once the patient has been
medically optimized.
30. A multidisciplinary approach to care has been shown to improve the
outcomes of older individuals sustaining a hip fracture.
31. Older individuals who sustain a hip fracture should be assumed to have
osteoporosis directed toward treatment to prevent additional fragility fractures.
Distal Radius
32. Treatment after distal radius fracture in the elderly should be individualized and
based on both patient and fracture factors.
33. Common indications for surgery include: 1) post-reduction radial shortening
>3mm;, 2) post- reduction dorsal tilt >10 degrees; 3) post-reduction intra-articular
displacement or step-off
>2mm and 4) fracture instability.
34. Both internal and external fixation are appropriate methods to stabilize a distal radius
fracture.
Proximal Humerus
35. Treatment after proximal humerus fracture in the elderly should be individualized
and based on both patient and fracture factors.
36. One can augment plate and screw fixation by using suture placed deep to the rotator
cuff insertion
37. Hemiarthroplasty gives satisfactory pain results with somewhat unpredictable
functional results.
Schedule:
Lectures 10 min
each
1. Osteoporosis evaluation and management
2. Locked plating basics
3. Femoral neck fractures
4. Intertrochanteric hip fractures
5. Periprosthetic fracture management
Cases 25-30 min (should cover evaluation, treatment options, complications,
and results)
1. Distal radius
2. Hip fracture
3. Periprosthetic femur fracture
Labs 20-30 min
1. Distal radius
2. SHS
3. IM hip nail
Module time allocation (a 10 minute break will occur between each section)
1. Lectures on osteoporosis and locked plating basics (10 min
each) Distal radius case discussion (25 min)
Lab (distal radius locked volar plating) (20 min)
2. Lectures on femoral neck and intertrochanteric fractures (10 min
each) Hip fracture case discussion (FN/IT fxs) (30 min)
Lab (sliding hip screw) (30 min)
3. Lecture on periprosthetic fractures (10
min) Periprosthetic case discussion (30
min)
Lab (IM hip screw) (30 min).