Clinical Orthopaedics and Related Research ®

A Publication of The Association of Bone and Joint Surgeons ®

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Articles

RUNX2 Polymorphisms Associated with OPLL and OLF in the Han Population

Yang Liu MD, Yongfei Zhao MD, Yu Chen MD, Guodong Shi MD, Wen Yuan MD

Runt-related transcription factor 2 (RUNX2), BMP-2, COL6A1, and VDR are four genes that may be related to ossification of the spinal ligament. However, their pathogenetic relevance remains unclear. Most cases of ossification of the posterior longitudinal ligament (OPLL) and ossification of the ligamentum flavum (OLF) have been reported in Asian populations, but the polymorphic loci in these genes may vary among people of different races.

Case Reports: Painful Limbs/Moving Extremities: Report of Two Cases

Tsuyoshi Miyakawa MD, Mitsunori Yoshimoto MD, Tsuneo Takebayashi MD, Toshihiko Yamashita MD

Painful limbs/moving extremities is a relatively rare condition characterized by aching pain in one limb and involuntary movement in the affected fingers or toes. Its pathomechanism is unknown. We report two patients with painful limbs/moving extremities. In one patient with a painful arm and moving fingers, the symptoms were resolved after surgery.

Can Computer-assisted Surgery Reduce the Effective Dose for Spinal Fusion and Sacroiliac Screw Insertion?

Michael David Kraus MD, Gert Krischak PD Dr, Peter Keppler PD Dr, Florian T. Gebhard MD, Uwe H. W. Schuetz Dr med

The increasing use of fluoroscopy-based surgical procedures and the associated exposure to radiation raise questions regarding potential risks for patients and operating room personnel. Computer-assisted technologies can help to reduce the emission of radiation; the effect on the patient’s dose for the three-dimensional (3-D)-based technologies has not yet been evaluated.

Is Closed-suction Drainage Necessary for Single-level Lumbar Decompression?: Review of 560 Cases

Masahiro Kanayama MD, Fumihiro Oha MD, Daisuke Togawa MD, Keiichi Shigenobu MD, Tomoyuki Hashimoto MD

Closed-suction drainage is commonly used for prevention of postoperative hematoma and associated neurologic compromise after lumbar decompression, but it remains unclear whether suction drainage reduces postoperative complications.