The Parva stem has been designed in order to achieve a good cervical and interthrocanteric primary fixation associated with a reliable fit at the isthmus level.

The stem has been conceived to address the larger possible variety of proximal femoral anatomic variations too.

Ability to adapt to patients anatomies being one of the major limitations of earlier neck preserving implants.

The stem therefore features innovative design concepts including the latest generation Modular Neck System, coupled with a revolutionary metal powder manufacturing process and surface engineering technology.

Our first 150 cases with minimum 1 year follow up are presented. All patients have been followed employing the Harris Hip Score and the reduced WOMAC questionnaire to judge their degree of satisfaction.

Particular care has been posed to analyze results for those patients anatomies (i.e. Very Valgus or Varus femurs) where normally neck sparing stems have problems to correctly fit in.

The feed-back we had with this very innovative implant is very encouraging.

Further data collection and longer follow up will be needed in order to confirm these early promising results.

Purpose of our study is to present the design rationale and the early clinical results for the Parva Stem, an innovative short hip stem. The Parva implant has been designed in order to address the bone sparing concept of a short stem able to achieve a good cervical and interthrocanteric primary fixation associated with a the reliable primary fixation the isthmus level.

The stem has been designed to address the larger possible variety of anatomical variations too. The stem therefore features innovative design concepts including the latest generation Modular Neck System, coupled with a revolutionary manufacturing process and surface engineering technology. This manufacturing process (Powder manufacturing Technology) and Ingrowth Surface (Ti-Por) will be also briefly discussed in the presentation.

Our early clinical results will be also presented (150 stem-one yr. maximum follow up will be presented) although they are not the main purpose of our study oriented more on the novel design and technological manufacturing advancement.

The feed-back we had so far with this state of the art implant is extremely encouraging. Of course further data collection and longer follow up will be needed in order to confirm these early promising results.