EXAMPLE Emeka Nchekwube, M.D. OPERATIVE REPORT ________________________________ ANESTHESIOLOGIST: Steven Wai, M.D. ANESTHESIA: General. PREOPERATIVE DIAGNOSES: 1. L3-L4, L4-L5 lumbar instability. 2. L3-L4, L4-L5 lateral recess and foraminal stenosis. POSTOPERATIVE DIAGNOSES: 1. L3-L4, L4-L5 lumbar instability. 2. L3-L4, L4-L5 lateral recess and foraminal stenosis. OPERATION: 1. Bilateral L3, L4, and L5 laminotomy, foraminotomy, and lateral recess decompression. 2. Posterolateral fusion L3, L4, and L5 using allograft cortical bone chips and hydroxyapatite artificial bone granules with bone morphogenic protein impregnated collagen sheaths. FINDINGS: The patient had a combination of spondylosis, thick lamina, congenital facet hypertrophy, and spondylotic disease with thick yellow ligament causing the pathological process. The patient also has instability at L3-L4 and L4-L5. INDICATIONS: Following satisfactory general endotracheal anesthesia, the patient was placed prone on a specially padded Wilson frame. The lumbosacral region was prepped and draped in the usual fashion. The operation commenced with a midline incision placed from L3 to the sacrum and taken down sharply through the underlying subcutaneous tissue. The perispinal muscles were mobilized bilaterally in a subperiosteal fashion and exposure extended laterally to reveal the lateral elements including the facet, pedicles, and transverse processes at L3, L4, and L5. The lateral elements were then cleared of soft tissues and decorticated using an Anspach high-speed precision drill in preparation for fusion. At this time, it was very obvious that the patient was grossly unstable at L3-L4 and L4-L5. Attention was directed to the lamina at L3, L4, and L5, which was opened up with the Anspach high-speed precision drill exposing a thick yellow ligament. It was then decided to perform a medial facetectomy in order to gain as much exposure as possible without traumatizing the dura and the adjacent nerve root. The lateral recesses were decompressed as the yellow ligament was mobilized and removed. This was very thick. The nerve roots were then exposed and followed into the respective foramina where a generous foraminotomy was carried out to decompress the exiting nerve roots. The foramina were also noted to be tight. The procedure was carried out on both sides at L3, L4, and L5. The disk spaces were expected and noted to contain firm, partly mineralized soft tissues, but no overt herniation. A small dural opening was noted on the right at L3-L4, which was punctate and suggestive of previous lumbar puncture site. With mobilization under direct vision, this opening resulted in a brisk cerebrospinal fluid leak. This leak was then repaired with a 7-0 Prolene suture, followed by application of fibrin glue, which resulted in a tight seal. Final inspection this patient was carried out and bony bleeders were secured with bone wax and epidural venous bleeders with bipolar cautery. The wound was irrigated copiously. Following this, bone morphogenic protein was applied to collagen sheaths and allowed to reconstitute in the usual fashion. The fusion material consisted of hydroxyapatite artificial bone granule blocks and cortical allografts and homographs were applied centrally to the collagen sheath and rolled into a "burrito". These "burritos" were then secured into the posterolateral gutter from L2 to L5 to complete the fusion, and next a #10 JacksonPratt drain was placed on each side and brought out through separate stab wound incisions. The wound closure then commenced in anatomic layers with #1 Vicryl suture used to reapproximate the deep fascia and the spinous processes to create an anatomical closure of the deep fascial layer. The superficial fascial layer was closed in a running fashion with 2-0 Vicryl suture and the subcuticular layer was closed in a running inverted fashion with 3-0 Vicryl suture. A sterile dressing was applied and patient left the operating room in a stable and satisfactory condition. ESTIMATED BLOOD LOSS: 100 mL.