Redisplacement after Operative Reduction of Spondylolisthesis: Comparison between Pedicle screw system and Luque ring system / 대한정형외과학회잡지

Operative reduction is not essential for mild to moderate spondylolisthesis, but some authors agree that reduction of spondylolisthesis is beneficial for widening of intervertebral canal and consequently for decompression of neural tissue even though the degree of slippage is grade I or II. In our institute, we sometimes reduced the slippage for these reasons. But at follow up study we would find redisplacement and the degree of it seemed to be associated with the kind of instruments. So we analyzed redisplacement rate according to the kind of instruments in 59 cases of spondylolisthesis that were followed more than one year. The conclusions were as follow; 1. There was no significant correlation between reduction and redisplacement rate with pathologic type, lesion site, age,iscectomy and clinical result at least in grade I or II spondylolisthesis (P>0.05). 2. The pedicle screw system was more useful in reduction and its maintenance than the Luque ring system (P<0.001). 3. Redisplacement was occurred mainly within 2 months after operation, 4. The cause of redisplacement after reduction seems to be associated with mechanical insecurity before consolidation of the grafted bone takes place.

A Clinical Study of the Flexor Tendon Injures in the Hand / 대한정형외과학회잡지

Many injuries of the hand have been occured in these days because of frequent industrial hazards and frequent handling of tools in modern civilizing life. A voluminous amount of literature has been recently concerned with many problems and questions posed by tendon surgery. Many investigations have been devoted to discussion of suture materials, tendon suturing, grafting, healing, rate of healing, nutrition and related clinical and laboratory endeavors. Because of these efforts, the designation of Zone II as“no man's land” is no longer significant and should be called “skilled man's land”. With regard to to secondary reconstructive surgery, in cases without much scarring and few associated lesions, we routinely select the one-stage graft and use early motion in the postoperative programs. This paper aimed to review our experience with 215 patients with flexor tendon injuries in hand who were treated with primary repair or tendon graft with average follow up of 8.5 months from June, 1973 to May, 1987 and the following results were obtained. 1. The most frequent site of injury was Zone V. 2. The over all end result of primary repair was satisfactory in 86.5% by White and Kleinert criteria. 3. The over all end result of tendon graft in Zone Il was satisfactory in 51.0% by White and Kleinert criteria. 4. In Zone lI, primary repair obtained satisfactory result in 36.4% but the tendon graft obtained satisfactory result in 51.0%. 5. In tendon graft, the preoperative stste was supposed to have close relation to postoperative result and the duration from injury to graft was supposed to have little relation to postoperative results. 6. In primary repair, the cases using Bunnells suture technique obtained satisfactory result in 85.1% and the cases using modified Kesslers suture technique obtained satisfactory result in 91.2%.

Ipsilateral Fractures of the Arm and Forearm / 대한정형외과학회잡지

The simultaneous ipsilateral fractures of the arm and forearm are relatively rare and there is no exact method of treatment for these fractures. Authors has clinically analized 37 cases of these fractures which are treated between September, 1973 and May, 1987 at the Department of Orthopedic Surgery, Hanyang University College of Medicine. The results can be summarized as follows. l. Among 440 patients with humeral fracture, there were associated fractures of the ipsilateral forearm bone in 69 patients (13. 4%). 2. The main cause of these fracture was traffic accident and the next one was fell from a height. 3. The most frequently associated injury was nerve paralysis. 4. The methods of treatment were classified as follows . 1 st method Both arm and forearm were treated by internal fixation (32.1%). 2nd method The arm was treated by internal fixation and the forearm by conservative method (11.8%). 3rd method The arm was treated by conservative method and the forearm by in- ternal fixation (11.8%). 4rdmethod Both arm and forearm were treated by conservative method (44. 3%). 5. By Andersons criteria, excellent and satisfactory results were obtained in 47. 1% of cases which were treated by mainly 1 st method.