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

Table 1 Summary of studies evaluating power grip

Study	Instrument	Unit of measurement	Handle position	Patient positioning
Agee et al., 1992 [9]	Jamar	%	all 5 settings	NR
Bhattacharya et al., 2004 [28]	Jamar	%	2	NR
Brown et al., 1993 [10]	Jamar	lbs	NR	NR
Brüser et al., 1994 [18]	Jamar	%	NR	NR
Citron and Bendall, 1997 [16]	Martin Vigorimeter	kpa	NR	NR
Dias et al., 2004 [29]	Jamar	kg	NR	Y
Dumontier et al., 1995 [14]	Jamar	kg	NR	NR
Erdmann, 1994 [11]	Jamar	lb	NR	NR
Ferdinand and Maclean, 2002 [22]	Baseline hydraulic	Ib	NR	NR
Foulkes et al., 1994 [12]	Jamar	lb	2²	NR
Helm and Vaziri, 2003 [26]	Baseline hydraulic	kg	NR	NR
MacDermid et al., 2003 [24]	digit grip device¹	kg	NR but cites refs	NR but cites refs
Mackenzie et al., 2000 [19]	Baseline hydraulic	kg	2	NR
Mackinnon et al., 1991 [8]	NR	kg	NR	NR
Nakamichi & Tachibana, 1997 [17]	NR	kg	NR	NR
Saw et al., 2003 [25]	Jamar	kg	NR	NR
Sennwald & Benedetti., 1995 [13]	Jamar	kg	2	NR
Trumble et al., 2002 [20]	Jamar	kg	all 5 settings	NR
Wong et al., 2003 [27]	NR	%	NR	NR

ISSN: 1471-2474