This is Maurice Muller's 1986 AAOS Presidential Guest Lecture, a commentary on surgical education. It argues that evaluation, learning, and teaching are inseparable activities in orthopaedic surgery. Muller applies this framework to motor skill, preoperative planning, and outcome documentation.
This lecture is the philosophical scaffolding behind the AO approach to fracture care that residents apply every day. Muller's central mental model is the feedback loop: indication leads to decision, decision to operation, and outcome evaluation feeds back to correct all three. When you plan a case, you are testing whether you truly understand it before you touch the patient.
The practical takeaway is preoperative planning discipline. Before any osteotomy or arthroplasty, draw the plan specifying technique, fixation, approach, and target radiographic result. If you cannot draw it, you do not understand the case.
Muller also names the logic behind the AO/OTA classification: fracture classes exist to communicate prognosis and therapeutic difficulty, not just anatomy. That is why the system is built on hierarchical questions with defined answers. Finally, he makes the case for honest long-term documentation, warning that experience without data lets surgeons hide their failures.
This is Maurice Muller's 1986 AAOS Presidential Guest Lecture, a commentary on surgical education. It argues that evaluation, learning, and teaching are inseparable activities in orthopaedic surgery. Muller applies this framework to motor skill, preoperative planning, and outcome documentation.
This lecture is the philosophical scaffolding behind the AO approach to fracture care that residents apply every day. Muller's central mental model is the feedback loop: indication leads to decision, decision to operation, and outcome evaluation feeds back to correct all three. When you plan a case, you are testing whether you truly understand it before you touch the patient.
The practical takeaway is preoperative planning discipline. Before any osteotomy or arthroplasty, draw the plan specifying technique, fixation, approach, and target radiographic result. If you cannot draw it, you do not understand the case.
Muller also names the logic behind the AO/OTA classification: fracture classes exist to communicate prognosis and therapeutic difficulty, not just anatomy. That is why the system is built on hierarchical questions with defined answers. Finally, he makes the case for honest long-term documentation, warning that experience without data lets surgeons hide their failures.