Modulus of tensile strength Fatigue limit elasticity =UTS as percentage (MN/rn2) (MN/m') of UTS 3 16 stainless steel .

In 600 consecutive uncemented total hip replacements, 2 surgical approaches were used: the direct lateral Hardinge approach in supine position (group I: 241 cases) or in a lateral position (group II: 280 cases) and the anterolateral Watson-Jones approach in supine position (group III: 79 cases). 5 patients had clinically evident peripheral nerve injuries confirmed with EMG: none in group I, 1 lesion of the nervus ischiadicus and nervus femoralis in group II and 4 nervus femoralis lesions in group III, of which 1 was combined with an obturator nerve injury. The nerve injuries were evaluated with EMG. All 4 nervus femoralis lesions recovered spontaneously, but the one patients in group II had a persistent palsy of the peroneal nerve. The anatomical basis for the higher prevalence of nervus femoralis lesions in the anterolateral Watson-Jones approach is described.

A Steindler flexorplasty at the elbow was performed in 26 patients with an obstetric brachial plexus lesion because of deficient elbow flexion. Follow-up after a mean of 2.9 years (range, 1-7 years) showed a good functional result in 23 cases, whereas 3 primary failures were noted. In one case, a recurrent dislocation of the elbow was seen 3 years after the initial flexorplasty. Steindler flexorplasty is a comparatively simple operation and gives very reliable results. It should be preferred above other, more elaborate muscle transfers for loss of elbow flexion.

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