Back to Incidents Registry
FDA-TJC-2022-1105FDA REGISTRYBiomedical / Hospital Surgery

Wrong-Site Knee Arthroscopy Following Verbal Time-Out Checklist Dismissal

Incident Failure Topology Brief
Critical Multi-Node (Level 4)Sev 8.8/10

Lower-tier Decision_Node signaled boundary warning. Dominant Decision_Node bypassed mandatory verification Constraint_Boundary to optimize turnover proxy, locking irreversible state alteration on incorrect biological node.

Failure Invariant Breach
Irreversible physical state breach
Absent Safety Recovery Mechanism
Hard stop electronic count verification interlocked with anesthesia extubation
Domain De-Aliasing & Jargon Stripping
Raw Domain Record (Subjective Narrative)

A patient was scheduled for left knee arthroscopy. In the operating room, the patient was draped without verifying the indelible skin marker on the left leg. When the circulating nurse questioned whether the right leg was being prepped, the senior orthopedic surgeon dismissed the interruption to maintain surgery turnover schedules, executing surgery on the wrong healthy limb.

PatternDB Invariant Representation

Lower-tier Decision_Node signaled boundary warning. Dominant Decision_Node bypassed mandatory verification Constraint_Boundary to optimize turnover proxy, locking irreversible state alteration on incorrect biological node.

Causal Failure Topology & State Vectors
4 Sequential Invariant Breaches
STEP 01DEGRADE
Surgical_Draping

Covered patient limbs before site marking was confirmed by entire team

Vector: Checklist boundary bypass
STEP 02DEGRADE
Circulating_Nurse

Verbally asked: "Did we verify the left knee site before draping?"

Vector: Telemetry alert challenge
STEP 03DEGRADE
Surgeon

Overruled: "I examined him in clinic this morning, it is the right knee, lets proceed"

Vector: Authority gradient suppression
STEP 04RUPTURE
Surgical_Blade

Incised healthy right knee joint capsule

Vector: Irreversible physical state breach
Decision Nodes Involved
Attending Orthopedic Surgeon
Circulating Nurse
Anesthesiologist
Telemetry Channels
Pre-Operative Skin Marker Verification
Universal Time-Out Protocol
Constraint Boundaries Breached
Joint Commission Universal Protocol for Preventing Wrong Site Surgery
Official Regulatory Audit Citation
FDA RegistryFDA-TJC-2022-1105
Incident Official DateNov 5, 2022
Quantified Systemic LossWrong-Site Amputation/Surgery Sentinel Event & $2.2M Settlement
Primary Investigation Transcripts:

"The time-out checklist was treated as administrative paperwork rather than an active surgical stop-work authority."

Immutable Archive RecordVerify at FDA Primary Database

Cross-Domain Invariant Twin Failures (47)

Cross-Domain Invariant Twin
100% Topological MatchΔ 0.000
FDA-TJC-2022-1105Biomedical / Hospital Surgery
Wrong-Site Knee Arthroscopy Following Verbal Time-Out Checklist Dismissal

Lower-tier Decision_Node signaled boundary warning. Dominant Decision_Node bypassed mandatory verification Constraint_Boundary to optimize turnover proxy, locking irreversible state alteration on incorrect biological node.

Source Authority:FDA
FDA-MAUDE-2022-4411Biomedical / Hospital Ops
Retained Laparotomy Surgical Sponge Following Dismissal of Nursing Discrepancy

Lower-tier Decision_Node detected state discrepancy and signaled warning. Dominant Decision_Node overrode telemetry channel to preserve operational velocity proxy. Invariant violation locked inside physical organism.

Source Authority:FDA
Shared Failure Vector: Nurse_Telemetry (Count Discrepancy) -> Attending_Surgeon (Suppressed) -> Wound_Closure
Deep Compare
Cross-Domain Invariant Twin
100% Topological MatchΔ 0.098
FDA-TJC-2022-1105Biomedical / Hospital Surgery
Wrong-Site Knee Arthroscopy Following Verbal Time-Out Checklist Dismissal

Lower-tier Decision_Node signaled boundary warning. Dominant Decision_Node bypassed mandatory verification Constraint_Boundary to optimize turnover proxy, locking irreversible state alteration on incorrect biological node.

Source Authority:FDA
NTSB-AAR-1977-0327Commercial Aviation
KLM 4805 & Pan Am 1736 Runway Incursion: Extreme Captain Authority Gradient

High-authority Decision_Node initiated irreversible state transition without clearance. Lower-tier monitoring nodes observed state ambiguity but were structurally inhibited from executing emergency stop-action.

Source Authority:NTSB
Shared Failure Vector: Nurse_Telemetry (Count Discrepancy) -> Attending_Surgeon (Suppressed) -> Wound_Closure
Deep Compare
Cross-Domain Invariant Twin
100% Topological MatchΔ 0.098
FDA-TJC-2022-1105Biomedical / Hospital Surgery
Wrong-Site Knee Arthroscopy Following Verbal Time-Out Checklist Dismissal

Lower-tier Decision_Node signaled boundary warning. Dominant Decision_Node bypassed mandatory verification Constraint_Boundary to optimize turnover proxy, locking irreversible state alteration on incorrect biological node.

Source Authority:FDA
NTSB-AAR-14-01Commercial Aviation
Asiana Airlines Flight 214: Cockpit Autothrottle Mode Confusion & Steep Cultural Gradient

Decision_Node misunderstood automated automation state mode. Steep social and hierarchical authority gradient in the cockpit suppressed subordinate nodes from executing go-around invariant until kinetic recovery envelope was breached.

Source Authority:NTSB
Shared Failure Vector: Nurse_Telemetry (Count Discrepancy) -> Attending_Surgeon (Suppressed) -> Wound_Closure
Deep Compare