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    Demographic Characteristics of 796 Patients Operated for Lumbar Disc Herniation in Thrace Region, Turkey
    (Derman Medical Publ, 2016) Delen, Emre; Akinci, Ahmet Tolgay; Tutunculer, Banu; Memis, Muzaffer; Kunduracilar, Nebile Muge; Sahin, Soner
    Aim: This study was designed was to determine the demographic characteristics of patients operated for lumbar disc herniation in Thrace Region, Turkey. Material and Method: We retrospectively searched our data to find out patients who had one sided, one level and only one spinal surgical intervention for herniated lumbar disc. Results: Among 796 cases, 336 (4256) were men and 460 (5831:) were women. The level of the pathology is determined as LI - 2 for 4 cases (0.56b), L2 - 3 for 15 cases (1.9%), L3 - 4 for 5 I cases (6.4%), L4 - 5 for 412 cases (51.8%) and as L5 - 51 on 314 cases (39.4%). While a total of 70 cases (8.9%) were identified on upper -levels ( LI - 2. L2 - 3, L3 - 4); 726 cases (91.1%) were found to be on lower -levels ( L4 - 5, L5 - Si). A mild positive correlation between the pathology level and physical activity intensity (P e 0.05, P = 0.103) has been demonstrated: as well as a strong negative correlation between pathology level and mean age (P < 0.05. P = -0.404). Discussion: The demographic characteristics are consistent with the literature. Physical activity intensity influence on lower -level herniations might have significance due to the large sample size. The strong negative correlation between pathology level and mean age suggests that the degeneration raises the frequency of upper -level herniations.
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    Heterotopic Ossification in Cervical Disk Surgery Is Still a Problem. What Are the Key Factors for a Solution?
    (Elsevier Science Inc, 2016) Cesar Noriega, David; Hernandez Ramajo, Ruben; Sanchez-Lite, Israel; Toribio, Borja; Delen, Emle; Sahin, Soner
    BACKGROUND: The aim of our study was to determine the presence of heterotopic ossifications (HO) in a series of patients with cervical disk arthroplasty treated with different type of prosthesis, as well as to analyze the most suitable systems for diagnosis. METHODS: A retrospective study of patients with cervical disk disease treated with cervical arthroplasty between May 2005 and December 2009, was performed. Patients were divided into 3 groups, depending on the prosthesis implanted: (Group A: Baguera prosthesis, Group B: ProDisc prosthesis, and Group C: PCM prosthesis). The presence of heterotopic ossifications was evaluated with both, simple radiology and computed tomography. RESULTS: As a summary of the results on motion preservation, computed tomography scans showed that 63% of the cervical arthroplasties in Group A presented good mobility at the first check point (December 2010), whereas cervical arthroplasties in Group B and Group C had 74% and 65% severe motion restrictions, respectively (Grade III or Grade IV, according to McAfee classification). The differences between groups were statistically significant when comparing Groups A and B, and Groups A and C (P < 0.05), but there were no differences between Groups B and C (P < 0.05). At the second check point (December 2014), the good mobility was just preserved in the 26% of the disk replacements (all in Group A). CONCLUSIONS: Our results showed that, although cervical disks provide optimal mid-term results, the incidence of HO seems to increase with time. Long term studies, with a larger sample size should be conducted to evaluate the appearance of HO and cervical motion after total disk replacement.