Biomedical subjects
Publications and source records attributed to A K Mehara.
A new radiological sign of distal shift of the radius compared to the ulna is described in the condition of pulled elbow. This measurement has been termed the proximal radial length and was altered in 21 out of 25 cases of pulled elbow diagnosed clinically. The normal relationship was restored after manipulation.
An unusual combination of posterior hip dislocation with ipsilateral femoral neck and head fractures is reported. The femoral head migrated too far inferiorly in the posterior part of the thigh, making it different from the previously reported solitary case report of obturator hip dislocation associated with femoral neck and head fractures.
A new method of reducing both anterior and posterior shoulder dislocations is described. Force is directed along the axis of the joint and minimal effort is required. The method is safe, simple and successful in both recent and delayed cases.
A simple and safe method of closed reduction of fresh posterior dislocation of the elbow is described. The method does not require assistance, sedation, traction or significant manipulation. It has succeeded in 90% of dislocations within 24 h of injury.
Percutaneous bone grafting with a specially devised milling cutter was used in 21 patients with nonunion or delayed union of fractures of the tibial shaft. Union was obtained in 18. The technique is safe, simple and can be done under local anaesthesia.
Results of treatment in 78 patients with volar Barton's fractures have been analysed. On radiological assessment these fractures were divided into three distinct categories and this classification is related to the results of closed manipulation. Results are best when this fracture is treated with open reduction and internal fixation. In non-operatively treated cases results are much better if the articular step is less than 2 mm.
Isolated dorsal dislocation and rotatory dislocation of the second carpometacarpal joint is rare. A case of rotatory dislocation of this joint is presented, where reduction was blocked by entrapment of the extensor carpi radialis longus tendon in the joint. A roentgenographic technique for evaluating dislocation of carpometacarpal joints is also described.
An extremely rare injury, traumatic radial head dislocation with concomitant fracture of the radial shaft, is reported. The dislocated radial head could not be reduced by closed technique because of capsular interposition. Reduction of the radial shaft fracture was possible only after the dislocation of the radial head was reduced.
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Eight cases of isolated fracture-dislocation of the first tarsometatarsal joint are presented. This is an uncommon injury and a distinct entity from other tarsometatarsal joint injuries. Reduction of both the fracture and the dislocation is easy but is unstable. Kirschner wire and screw fixation adequately stabilizes the reduction and gives good results. Results of conservatively treated cases are usually poor, since redisplacement in plaster is quite common.