Ortho Oracle - orthopaedic operative atlas

Data Trace Editor

Lunate Implant

– Discussion:     – lunate shaped spacer implant made of silicone, vitallium, acrylic, or rolled-tendon is inserted into theresulting space to prevent migration of             other carpal bones;     – due to the high rate of synovitis, most surgeons are now reluctant to use lunate implants; – Technical Considerations:     – dorsal approach is … Read more

Lunate

          – Acute Ligament Tear – Repair Technique   – Blood Supply to the Wrist   – Carpal Instability   – Differential Diagnosis   – Kienbock’s disease   – Luno-Triquetral Coalition   – Perilunate Dislocations   – Scapholunate Instability   – Vascularity of the Lunate   – X-ray findings – Discussion: … Read more

Lumbricals

– See:       – Bunnel Test for Intrinsic Tightness:       – Extensor Mechanism of Digits       – Lumbrical Muscle Sheaths       – Lumbical Plus Finger: – Origin:     – tendons of FDP tendon in center of palm, just proximal to the flexor sheath and the A1 … Read more

Lumbrical Plus Finger

– See:    – Bunnel Test for Intrinsic Tightness:    – Lumbricals: – Discussion:     – this is manifested by intrinsic plus attitude in involved finger on attempted flexion: (w/ MP flexion there will be IP extension);             – FDP becomes an extensor of the PIP joint;     – when FDP relaxes FDS can … Read more

Lumbrical Muscle Sheaths

– Discussion:     – index lumbrical is adherent to roof of thenar bursa;     – second, third, & 4th lumbrical sheaths are not so easily demonstrated, but when present usually overlie mid palmar bursa or space;     – lumbar sheaths extend from the web area to the center of the palm;   … Read more

Lumbar Vertebrae

– Discussion:     – their heights are less than their horizontal diameters;     – pedicles are relatively short and project from the upper half of body;     – laminae are thick & droop below level of pedicles but do not overlap;     – spinous process is hatchet-shaped and projects horizontally, with … Read more

Lumbar Stenosis

– Discussion:     – spinal stensosis is a narrowing of the lumbar spinal canal and/or neural foramina;     – results in compression of the cauda equina and lumbar nerve roots, producing neural root ischemia and neurogenic claudication;     – compression of neural structures also compresses vascular supply of nerves so that symptoms are predominately those of … Read more

Lumbar Scoliosis

– See: Fusion to Sacrum: – Indications for Rx:       – curves > 40-45 deg;       – documented progression;       – marked imbalance with a shift to one side;       – substantial pain; – Operative Considerations:     – attempt to increase lordosis compared with that noted … Read more

Lumbar Plexus

– Anatomy:     – primary ventral rami of five lumbar nerves and of first four sacral nerves combine to form the lumbar (L1, L2, L3, L4) & lumbosacral            (L4, L5, S1, S2, S3, S4) plexuses, each giving rise to anterior and posterior branches;           – anterior branches supply flexor … Read more