Skip to main content

Advertisement

Springer Nature is making SARS-CoV-2 and COVID-19 research free. View research | View latest news | Sign up for updates

Table 1 Results of the nerve conduction tests (right hands) in the persons with carpal tunnel syndrome (CTS) and the controls

From: Diagnostic properties of nerve conduction tests in population-based carpal tunnel syndrome

Nerve conduction test, mean (95% confidence interval) Clinically certain CTS (n = 86) Symptomatic Controls (n = 155) Asymptomatic Controls (n = 124)*
Median nerve distal motor latency (ms) 4.2 (4.0–4.4) 3.6 (3.5–3.7) 3.4 (3.3–3.5)
Median nerve digit 3-wrist sensory latency (ms) 3.6 (3.4–3.8) 3.0 (2.9–3.1) 2.9 (2.8–3.0)
Median nerve wrist-palm sensory conduction velocity (m/s) 39.2 (36.5–41.9) 48.3 (46.8–49.8) 50.7 (49.4–52.0)
Ulnar nerve distal motor latency (ms) 2.7 (2.6–2.7) 2.7 (2.6–2.7) 2.8 (2.7–2.8)
Ulnar nerve digit 5-wrist sensory latency (ms) 2.3 (2.2–2.3) 2.3 (2.3–2.4) 2.3 (2.3–2.4)
Median-ulnar nerve sensory latency difference (ms) 1.3 (1.1–1.5) 0.72 (0.65–0.79) 0.57 (0.52–0.62)
  1. * One of the 125 controls did not undergo testing on the right hand because of previous laceration. Significantly worse than in the controls (p < 0.001). Absent sensory responses in 3 persons with CTS (for both tests in 2 persons) and in one symptomatic control (both tests); in calculating means, absent latency values were replaced with the most abnormal value recorded.