Atlas : Welcome

Explants analysis

The various Atlas

Atlas and Low-friction

Primary stability

Surgical procedure

Clinical data

Insert stability

Quality requirement

Insert thickness

Atlas : The inventor

Secondary stability

Contact

International distribution

Surgical procedure

First intention

Esop ®may be implanted using any surgical approach More information

1. Reaming

 

Reaming is effected using the universally-known, variable caliber, hemispherical reamers : graduating from 44 to 68 mm in 2 mm steps.

The reamer is used as a template : once the ideal size has been reached, the reamer is fully stabilized and lateral movements are no longer possible.

Reaming must penetrate to the bleeding subchondral bone, to ensure the best possible vascularization and bone ingrowth.
Esop

2. Impacting

a. Use an Esop ® cup one size larger than the diameter of the last reamer used :
e.g. : Reamer diameter 50 = Esop ® 52

EsopEsop

b. Before impacting, identify the position of the slot. It has to be placed at the base of the cup positioner, at 45° to the rod which is used as reference for verticality.

c. After the final fitting done with a hammer, close contact of the implant to the bone is obtained, and can be checked through the central hole in the Esop ® cup.

d. Once the fitting has been achieved, the slot closes up, proving that a strong bond has been reached.

Stability test :

In one of the screw holes, place the ancillary hook supplied, and try to pull off the cup. if the primary stability is sound, the implant will not move..
Esop

 

Remark :
The non-screw technique is ideally used in first intention surgery (95 % of cases).

However, in the case of either poor bone quality or a revision, it is possible to use 6.5 mm diameter titanium cancellous screws. Fitting them is effected with the flexible instruments, included in the ancillary equipment supplied.

 

3. Positioning the insert :

The sterile polyethylene core supplied is positioned in the cup, taking care that antiluxation wall is placed upwards.
Starting with the collar at the bottom, swing the insert over to achieve a tight contact at the top..
The cup is impacted with the special impactor and hammer. Once in place, the peripheral collar will eliminate any possible contact between the metal edge of the cup and the head of the femur
Implanting an Esop®cup is easy and non-traumatic.

Welcome - The various Esop - Primary stability - Insert stability - Insert thickness - Secondary stability - Explant analysis - Low-friction
Surgical procedure - Clinical data - Quality requirement - The inventor - Contact - International distribution