Table 1.

Median nerve position 1 month after percutaneous carpal tunnel release (N = 129)

Position before PCTR	Position after PCTR
	Nerve above the line	Nerve crosses the line	Nerve under the line
Nerve above the line	12 (13.8%)	27 (31.0%)	48 (55.2%)
Nerve crosses the line	0	12 (30.8%)	27 (69.2%)
Nerve under the line	0	0	3 (100%)

Position of the nerve was compared to the line joining the hook of hamate to the ridge of the trapezium. Decompression was considered successful if nerve location went from a deep to a superficial position: nerve above the line (deepest), nerve crosses the line (intermediary); nerve under the line (most superficial). PCTR percutaneous carpal tunnel release