The diagnosis of nerve injury using thermotropic liquid crystal temperature strips was compared blindly and prospectively against operative findings in 36 patients requiring surgical exploration for unilateral upper limb lacerations with suspected nerve injury. Thermotropic liquid crystal strips were applied to affected and non-affected segments in both hands in all subjects. A pilot study showed that a simple unilateral laceration without nerve injury results in a cutaneous temperature difference between limbs, but not within each limb. Thus, for detection of a nerve injury, comparison was made against the unaffected nerve distribution in the same hand.

Receiver operating characteristic curve analysis showed that an absolute temperature difference ≥ 1.0°C was diagnostic of a nerve injury (area under the curve = 0.985, sensitivity = 100%, specificity = 93.8%).

Thermotropic liquid crystal strip assessment is a new, reliable and objective method for the diagnosis of traumatic peripheral nerve injuries. If implemented in the acute setting, it could improve the reliability of clinical assessment and reduce the number of negative surgical explorations.

This study aimed to ascertain the effect of operative delay on mortality of patients with hip fractures excluding those delayed for medical reasons.

In our unit, patients with hip fractures (fractures of the femoral neck and trochanteric zone) have surgery on trauma operating lists shared with plastic surgery emergencies. They are not specifically prioritised and are operated on in order of admission. In a 6-month period, 221 consecutive patients over the age of 65 were planned for surgical treatment of their hip fracture in our unit. 16 patients had surgery delayed for medical reasons and were excluded from further analysis. In a further 9 patients it was not possible to confirm the exact delay to theatre from records and these were also excluded. This left 196 patients in whom it was possible to relate in-hospital and 90-day mortality to surgical delay.

These data demonstrate a significant trend towards increasing mortality with increasing delay (χ²-test for trend: p = 0. 0015 (in-hospital) and p = 0. 0021 (90-day)). Comparison of mortality between those delayed 2 days or less (164 patients) and those delayed more than 2 days (32 patients) was also highly significant (Fisher’s exact test: p = 0. 0008 (in-hospital) and p = 0. 0004 (90-day)).

We conclude that delays to surgery in patients with hip fractures, particularly beyond 2 calendar days, result in unacceptably high mortality. Practice should be modified to ensure these patients receive greater priority for theatre time.