The Hip book

Posterior Atlanto-Axial Arthrodesis

– Indications:     – displaced type II dens frx;           – note that if posterior C1-C2 fusion is begin considered for type II dens frx, it is important to ensure that there is not a                  concomitant C1 arch frx; – Anatomy:     – vertebral arteries:           – … Read more

Posterior Approach for Acetabular Frx: (Kocher Langenbach)

 – See: Posterior Approach for Pelvic Frx – Indications for Use:     – isolated posterior wall & posterior column frxs;             – allows access to posterior column and posterior wall only, but exposure is limited proximally by                      superior gluteal vessels and greater trochanter;      – isolated transverse frx (as well … Read more

Posterior Approach to Knee

– Discussion:     – S shaped skin incision is made, extending along the posterior border of biceps and its tendon on the upper lateral side of popliteal fossa, then transversely across the fossa and finally along lower medial side of fossa posterior to semitendinosus tendon;     – skin flaps are retracted and the … Read more

Posterior Acetabular Wall Fractures

  – See:       – Associated Transverse and Posterior Wall Frx        – Classification and Column Theory  – Discussion:     – most common type of acetabular frx (up to 50% of acetabular fractures will contain a posterior              wall fragment);     – posterior wall frxs involve the posterior articular surfaces, often w/ retroacetabular … Read more

Positive Sharp Waves

– See: EMG Menu: – Discussion:     – associated w/ muscle denervation or myopathy;     – these are often found in assoc w/ fibrillation potentials, but tend to procede them in appearance after a nerve lesion

Popliteal Artery

– See: differential diagnosis of posterior fossa masses – Discussion:     – popliteal artery is the continuation of superficial femoral artery at hiatus of the adductor magnus muscle;     – artery is anchored proximally by tendinous insertion of adductor magnus upon the medial femoral epicondyle;     – it runs posterior to the distal … Read more