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Biomedical subjects

E C Yang

Publications and source records attributed to E C Yang.

7 recordsLinked to original sources

The use of an anterior incision of the meniscus for exposure of tibial plateau fractures requiring open reduction and internal fixation.

The purpose of this study was to examine the use of an anterior incision of the meniscus for exposure of tibial plateau fractures. We studied 27 fractures of the proximal tibia treated with open reduction and internal fixation (ORIF). There were nine unicondylar fractures (five A-O B2; four A-O B3) fixed with plates and screws and 18 bicondylar fractures (seven A-O C1; five A-O C2; six A-O C3) fixed with combination internal and external fixation. Length of follow-up averaged 26 months. All patients were treated with an anterior incision of the meniscus and retraction with the condyle. Of the 18 bicondylar fractures, nine severely displaced fractures were found to have peripherally detached menisci. Unicondylar fractures did not display this finding. After fixation, menisci were repaired at the periphery and sewn to the original anterior insertion. The repair begins posteriorly and advances the cartilage to ensure anatomic placement. There were four medial and 23 lateral menisci in this series. Ten patients underwent knee arthroscopy 6 months to 2 years post-ORIF as a routine procedure during hardware removal. All menisci were found to be healed to the periphery and were stable. There were no gross tears. In one patient, the anterior meniscal incision could be visualized. No patients developed mechanical symptoms either in postoperative rehabilitation or postoperative follow-up at a maximum of 6 years. All patients had > 125 degrees of motion. Less motion when compared with the normal knee was felt to be related to more complex fracture patterns. In conclusion, the anterior meniscal incision allows for excellent exposure of severe proximal tibia fractures. This technique allows for anatomic meniscal repair and early rehabilitation. Arthroscopic examination confirms peripheral meniscal healing. No patient experienced clinical symptoms of meniscal pathology.

Anterior Cruciate Ligament Injuries

Gunshot wounds to the forearm.

The rising incidence of civilian gunshot wounds has been well documented. Approximately 4% to 20% of these wounds consist of injuries to the forearm. An organized approach to the treatment of these injuries should be used to obtain an optimal result. Factors to be considered in treatment include the type of weapon and bullet involved, the neurovascular status of the patient, the possibility of compartment syndrome, the presence and type of fracture, and soft-tissue injury.

Algorithms

Metaphyseal dissociation fractures of the proximal tibia. An analysis of treatment and complications.

A study was done of 44 metaphyseal dissociation fractures of the proximal tibia in 42 patients (27 men and 15 women, aged 22 to 77 years; mean, 42 years). Follow-up ranged from 6 months to 4 years. There were 2 study groups: a retrospective group (group 1, 22 fractures) given a variety of treatments ranging from casts to dual plates, and a prospective group (group 2, 22 fractures) treated by combining external fixation and optional minimal internal fixation. There were 12 comminuted fractures in group 1 and 20 in group 2 (P < 0.01). All fractures eventually healed, with an average healing time in group 1 of 3.8 months, and 5.3 months in group 2. There was one delayed union in group 2. Results were graded from poor to excellent, based on pain, range-of-motion, and malunion. There were 6 poor and 4 fair results in group 1, and no poor and 3 fair results in group 2. Complications included 6 deep infections, 5 in group 1 (1 requiring a free-flap procedure); and 1 pin-tract infection resulting in septic arthritis in group 2. There were 7 gastrocnemius flaps required in group 1, and 1 in group 2. The results of this study suggest that patients treated with external fixation had better results with less infection and soft-tissue complications than those treated with conventional internal fixation.

Adult

The Thurstan-Holland fragment.

The Thurstan-Holland fragment, a small triangular piece of metaphyseal bone, may provide the only roentgenographic evidence of a prior epiphyseal separation that subsequently resolved.

Epiphyses

Inserting distal screws into interlocking IM nails.

The use of interlocking IM nails is commonplace in major trauma centers. Currently, an accurate guide for inserting the distal screws is not available. Most centers use the "free-hand" technique. Every surgeon must be familiar with this method to insert the screws. We describe our protocol for inserting the distal screws into interlocking IM nails.

Bone Nails

Pseudomonas aeruginosa as a causative agent of cervical osteomyelitis. Case report and review of the literature.

Pseudomonas aeruginosa osteomyelitis and epidural abscess of the cervical spine developed in a previously healthy, 73-year-old man who was not an intravenous drug abuser. In the recent literature, Pseudomonas cervical osteomyelitis has been reported only in intravenous drug abusers or in otherwise healthy individuals after a tooth extraction. In the literature of the past 30 years, isolated cases of cervical osteomyelitis were associated with urinary tract infections. The majority of these cases involved urinary tract instrumentation. The pathogenesis remains controversial. It appears that spontaneous cervical osteomyelitis in a non-intravenous drug abuser has not been previously reported.

Abscess