Surgical treatment for intra-articular calcaneal fractures / 中国骨伤

<p><b>OBJECTIVE</b>To evaluate clinical result of surgical treatment for intra-articular calcaneal fractures using calcaneal anatomy plate.</p><p><b>METHODS</b>From September 2004 to October 2009, 72 patients with intra-articular calcaneal fractures were reviewed. There were 61 males and 11 females, ranging in age from 19 to 54 years old,with an average of 39.7 years old. The course of the disease ranged from 1 to 17 days. All the patients performed X-ray and semi-coronal CT scan before and after operation. According to Sanders classification system, there were 40 cases of type III and 32 cases of type IV. All the patients were treated with lateral L-type incision and calcaneal anatomy plate. The therapeutic effects were evaluated according to the standard of calcaneal fracture of the American surgery association of foot and ankle.</p><p><b>RESULTS</b>All the patients were followed up, and the duration ranged from 10 to 48 months, with a mean of 38 months. According to standard of calcaneal fracture of the American surgery association of foot and ankle, 14 patients got an excellent result, 38 good, 9 fair and 11 poor. Five patients got incision non-union. Arthritis of subtalar joint was found in 3 cases.</p><p><b>CONCLUSION</b>Open reduction and internal fixation of plate is effective to get good reduction for subtalar joint, which is a good method to treat intra-articular calcaneal fracture.</p>

Distally based dorsal digital neurocutaneous flap for finger-pulp reconstruction / 中华显微外科杂志

Objective To introduce the clinical experience and investigate venous drainage of distal- ly-based dorsal digital neurocutaneous flap for finger-pulp reconstruction.Methods From Mar.2004 to Oct.2005,18 patients with traumatic finger-pulp defect (＞2cm) were treated by distally based dorsal ho- modigital neurocutaneous flaps.The flap measured 2 cm?2cm～3cm?4cm with the neuro-veno-adipal ped- icle 1cm wide and 2～3cm long.The pivot points were proximal to the PIP joints.The dorsal digital nerve was neurorrhaphied with the proper digital nerve of the recipient site.The dorsal digital vein was ligated at 1cm distal to the pivot point to prevent venous ingress.No venous anastomosis was performed.Results All the flaps survived but had some degrees of venous congestion and swelling,and 8 flaps developed tension blisters. In 13 flaps with follow-up more than 6 months,protective sensation was restored.Conclusion Dorsal digit- al neurocutaneous flap is simple and effective for finger-pulp reconstruction.Ligating the big superficial vein at the distal base to interrupt venous ingress,and allowing the proximal vein open and venous egress,can reduce flap congestion and swelling.

Expression of CD44 and nm23-H1 protein in the primary and metastatic lymph node lesions in supraglottic and hypopharyngeal cancer / 中华耳鼻咽喉头颈外科杂志

<p><b>OBJECTIVE</b>To study the metastasis feature of the primary and metastatic lymph node lesions in supraglottic or hypopharyngeal cancer.</p><p><b>METHODS</b>The expression of CD44 and nm23-H1 in specimens from the primary and metastatic lymph node lesions of the 41 cases with supraglottic or hypopharyngeal cancer were studied with immunohistochemistry method and flow cytometry.</p><p><b>RESULTS</b>No correlation was found between the expression of CD44, nm23-H1 and the tumor differentiation of the supraglottic or hypopharyngeal cancer, but their expression related with the clinical staging. The CD44 and nm23-H1 positive expression rates in the primary and metastatic lymph node lesions were 75.6% (31/41), 85.4% (35/41) and 34.1% (14/41), 26.8% (11/41) respectively (P >0.05). The average fluorescence index of CD44 and nm23-H1 in the primary and metastatic lymph node lesions were 1.27 +/- 0.18, 1.33 +/- 0.16 and 1.11 +/- 0.19, 1.08 +/- 0.15 (x +/- s) respectively (P >0.05).</p><p><b>CONCLUSIONS</b>The expressions of CD44 and nm23-H1 in the metastatic lymph node tumor had no difference compared with that in primary tumor of the supraglottic or hypopharyngeal cancer. The difference of metastasis potentials between the primary and metastatic lymph node lesions in the same patient was not proved in this study and should be further investigated from multiple oncogens markers.</p>

Preliminary study on the functional localization of auditory cortex in auditory pathology patients using magnetoencephalography / 中华耳鼻咽喉头颈外科杂志

<p><b>OBJECTIVE</b>To access the pathological changes of the functional localization of the primary auditory cortex in auditory neuropathy patients using magnetoencephalography (MEG).</p><p><b>METHODS</b>The M100 waves of cortical evoked magnetic fields (AEF) evoked by 0.5, 1, 2, 4, 6, 8 kHz pure tones were measured respectively in 10 auditory neuropathy patients (20 ears) and 15 healthy young subjects (30 ears) using a whole head 306 channel magnetoencephalography (MEG) system. The auditory cortex magnetic source imaging obtained by superimposing functional MEG data on structural magnetic resonance image (MRI).</p><p><b>RESULTS</b>The M100 sources were obtained in all 15 healthy young subjects in all frequency except for 8 kHz in 16 ears. But in auditory neuropathy patients, the ratio of M100 from 0.5 to 6 kHz were 27.5% (11/40), 22.5% (9/40), 7.5% (3/40), 5% (2/40), 5% (2/40) respectively and no any waves in 8 kHz. The evoked ratio of M100 in low frequency was high and that decreased gradually with increasing of evoked pure tone frequency. The M100 latentencies and amplitudes were longer and lower in patient group than that in control group (P < 0.01).</p><p><b>CONCLUSIONS</b>Auditory neuropathy is an audiology disease with pathological lesions from the VIII cranial nerve to auditory cortex. MEG might become an important reference in decision making for therapies.</p>