1. Analyzing Surgical Procedures for
Hip Replacements
Majeed Peffley,
majeed.peffley@upr.edu
Anthony Gonzalez,
anthony.gonzalez6@upr.edu Sponsored by: Dr. Lourdes Medina
23%
increase in
demand of
orthopedic
procedures
2%
increase
in supply
of
surgeons
Major Objective
• Understand the complexity of orthopedic
surgeries from the standpoint of a surgeon
• Help surgeons do the procedures more
efficiently
Initial Entry
Acetabular
component insertion
Femoral reaming
Femoral component
insertion
Femoral head
insertion
Intraoperative
assessment
Entry Closure
Methodology
*Iorio et al. 2008 Pair-wise
Comparisons
Validating Metrics
Used
Analyze &
Summarize Results
Propose use of
Standardized
Process Model
Proof of Concept:
IDEF0
Develop New
Metric Measuring
Complexity of
Surgical Procedure
12
11
7
10
Discussing of
interoperative
assessment
Details tools needed Description of
preoperative planning
Tells what additional
parts need to be used for
each step
Most Occuring Differences
1
2
3
1
3
0
2
3
0 0
2
3 3
1
2
FREEDOM
CONSTRAINED
LINER
MODULAR REACH
HIP
DEPUY HIP
PROSTHESIS
DEPUY PROTRUSIO
CAGE
MAX TI PROTRUSIO
CAGE
Lichter Scale
Detail of instructions Description of preoperative planning Detail tools needed
Mechanisms
Function Name
Controls
Inputs Outputs
Results and AnalysisIntroduction
Conclusion
Since the FDA regulates products that are used in
the procedures, why not require a standardized
process model for surgeons to follow? From our
analysis, our recommendation is to use a
standardized process model such as IDEF0 to have
the procedural process uniform for everyone
involved in the procedure.
Num.
people
needed
Mortality
risk
Surgeon
exp.
Surgical
Complex.
Patient
Factors
Tools
Used
Num.
of
steps
Control
Acetabular inserter
Thread inserter
Into acetabular
component
Check proper anatomic position
Reamed
acetabulum
Threaded
acetabular
component