Matsen's 1975 paper defines compartmental syndrome as a single unified condition: increased pressure in any closed space compromising perfusion to its contents. It synthesizes pathophysiology, time-critical ischemia thresholds, diagnostic approach, and treatment principles across all anatomic locations and etiologies. The paper replaced 14+ condition-specific names with one mechanistic framework.
A normal distal pulse does not rule out compartmental syndrome — Matsen explicitly states that peripheral pulse and capillary filling are frequently normal when a compartment is compromised. This is the most common pitfall that leads to delayed diagnosis.
When you suspect compartmental syndrome, your exam must include passive stretch of the involved muscles and two-point discrimination or light touch of each nerve at risk. These are more sensitive than pin-prick and more specific than pain alone.
The 12-hour rule is the operative threshold: decompress before 12 hours to prevent permanent deficits. Nerve buys you slightly more time than muscle, but both have hard limits that make this a true surgical emergency.
When you see an injured or post-operative extremity being elevated for swelling management, ask whether intracompartmental pressure is elevated. If it is, elevation drops perfusion pressure and accelerates ischemia. Put the limb at heart level and get to the OR.
Matsen's 1975 paper defines compartmental syndrome as a single unified condition: increased pressure in any closed space compromising perfusion to its contents. It synthesizes pathophysiology, time-critical ischemia thresholds, diagnostic approach, and treatment principles across all anatomic locations and etiologies. The paper replaced 14+ condition-specific names with one mechanistic framework.
A normal distal pulse does not rule out compartmental syndrome — Matsen explicitly states that peripheral pulse and capillary filling are frequently normal when a compartment is compromised. This is the most common pitfall that leads to delayed diagnosis.
When you suspect compartmental syndrome, your exam must include passive stretch of the involved muscles and two-point discrimination or light touch of each nerve at risk. These are more sensitive than pin-prick and more specific than pain alone.
The 12-hour rule is the operative threshold: decompress before 12 hours to prevent permanent deficits. Nerve buys you slightly more time than muscle, but both have hard limits that make this a true surgical emergency.
When you see an injured or post-operative extremity being elevated for swelling management, ask whether intracompartmental pressure is elevated. If it is, elevation drops perfusion pressure and accelerates ischemia. Put the limb at heart level and get to the OR.