Noyes et al. critique existing knee rating systems for ACL deficiency and propose the Cincinnati Rating System, the first to correlate all symptom domains with 6 defined activity levels. The paper also introduces a risk factor checklist to identify patients at significant risk for progressive joint arthrosis. Treatment guidelines for the acute and chronic ACL-insufficient knee are proposed based on retrospective data from 103 symptomatic patients.
Before this paper, knee rating systems used 2-4 activity gradations and did not correlate pain or swelling with specific activity levels, making it easy to overestimate surgical success in athletes who had simply stopped doing the activities that provoked symptoms.
This paper is why we ask ACL-injured patients not just "does your knee hurt?" but at which activity level symptoms occur. An athlete who reports no pain may have quietly stopped cutting and jumping sports — a functional failure that only a 6-level rating system uncovers.
When you see an ACL-deficient knee with swelling during walking, treat it as a red flag for impending osteoarthritis, not just residual inflammation. Swelling at low activity levels is the clinical signal to escalate treatment or restrict activities, even if the patient feels otherwise acceptable.
The risk factor checklist gives you a structured way to counsel patients: 2 major + 1 minor factors, or 4 minor factors, defines significant risk for arthrosis and should shift the conversation toward surgery or aggressive activity modification. Patients who continue cutting and jumping sports through recurrent giving-way episodes are accelerating joint destruction, even if the episodes cause symptoms for only a few days each time.
Noyes et al. critique existing knee rating systems for ACL deficiency and propose the Cincinnati Rating System, the first to correlate all symptom domains with 6 defined activity levels. The paper also introduces a risk factor checklist to identify patients at significant risk for progressive joint arthrosis. Treatment guidelines for the acute and chronic ACL-insufficient knee are proposed based on retrospective data from 103 symptomatic patients.
Before this paper, knee rating systems used 2-4 activity gradations and did not correlate pain or swelling with specific activity levels, making it easy to overestimate surgical success in athletes who had simply stopped doing the activities that provoked symptoms.
This paper is why we ask ACL-injured patients not just "does your knee hurt?" but at which activity level symptoms occur. An athlete who reports no pain may have quietly stopped cutting and jumping sports — a functional failure that only a 6-level rating system uncovers.
When you see an ACL-deficient knee with swelling during walking, treat it as a red flag for impending osteoarthritis, not just residual inflammation. Swelling at low activity levels is the clinical signal to escalate treatment or restrict activities, even if the patient feels otherwise acceptable.
The risk factor checklist gives you a structured way to counsel patients: 2 major + 1 minor factors, or 4 minor factors, defines significant risk for arthrosis and should shift the conversation toward surgery or aggressive activity modification. Patients who continue cutting and jumping sports through recurrent giving-way episodes are accelerating joint destruction, even if the episodes cause symptoms for only a few days each time.