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Table 5 Summary of studies using Manual Muscle Testing (MMT)

From: Power grip, pinch grip, manual muscle testing or thenar atrophy – which should be assessed as a motor outcome after carpal tunnel decompression? A systematic review

    Muscle tested  
Study Scale Gra-ding APB OP Results reported as
Agee et al., 1992 [9] MRC 1–5 not specified   % pf patients testing normal
Brown et al. 1993 [10] AOA 0–5   Mean and SD pre-op and post-op
Ferdinand & Maclean 2002 [22] MRC 0–5 NR
Leinberry et al., 1997 [15] NR 3–5   Mean and range pre-op and post-op
Mackinnon et al., 1991 [8] MRC 0–5 Number of hands
Nakamichi & Tachibana 1997 [17] NR 0–5   Mean and SD pre-op and post-op
Shum et al., 2002 [21] NR NR not specified   NR
Trumble et al., 2002 [20] AOA 0–5   NR
  1. MRC = Medical Research Council
  2. NR = Not Reported
  3. SD = Standard Deviation
  4. AOA = American Orthopedic Association
  5. APB = Abductor Pollicis Brevis
  6. OP = Opponens Pollicis