Hip joint method
An implantable medical device for implantation in a hip joint of a human patient is provided. The medical device comprises: at least one artificial hip joint surface adapted to replace at least the surface of at least one of the caput femur and acetabulum. At least one artificial hip joint surface comprises: a positioning hole with at least one opening in said at least one artificial hip joint surface. The hole is adapted to be placed and dimensioned such that the medical device is adapted to be fitted using a positioning shaft and at least partly surround the shaft, for positioning the at least one artificial hip joint surface in a desired position in the hip joint. The hole is adapted to be fitted using the positioning shaft, when the shaft is stabilized and placed in at least one of the femoral bone and the pelvic bone for positioning said medical device inside the hip joint.
1 . A method of treating a hip joint of a patient, said method comprising the steps in order, of:
cutting the skin of the patient,
dissecting an area of the hip joint,
placing a positioning shaft in the hip joint,
providing a medical device comprising a positioning hole, said positioning hole being adapted to be placed and dimensioned such that the medical device is adapted to be fitted using said positioning shaft,
placing said medical device at a distance from a final implanted position and at least partly onto said positioning shaft,
moving the medical device towards the final implanted position along the positioning shaft,
fixating said medical device comprising an artificial hip joint surface in the final implanted position in the hip joint using said positioning shaft.
2 . The method according to claim 1 , wherein said method further comprises the step of removing said positioning shaft.
3 . The method according to claim 1 , wherein fixating the medical device in the hip joint comprises fixating the medical device in the hip joint using a fixation element selected from a group consisting of:
at least one screw,
at least one pin,
at least one portion of at least one of the parts adapted to be introduced into the other part,
a first part being adapted to be sliding into a second part,
form fitting,
pin,
wire,
and
other mechanical connecting members.
4 . The method according to claim 1 , wherein the step of fixating the medical device in the hip joint, comprises the step of fixating the medical device to the caput femur or femoral bone.
5 . The method according to claim 1 , wherein fixating the medical device in the hip joint, comprises fixating the medical device to the acetabulum or pelvic bone.
6 . The method according to claim 1 , wherein the step of placing a positioning shaft in the hip joint, comprises the step of placing a positioning shaft in the caput femur or femoral bone.
7 . The method according to claim 1 , wherein the step of placing a positioning shaft in the hip joint, comprises the step of placing a positioning shaft in the acetabulum or pelvic bone.
8 . The method according to claim 1 , wherein the step of placing said medical device at least partly surrounding said positioning shaft, comprises placing an artificial acetabulum or artificial acetabulum surface onto said positioning shaft in the hip joint, wherein said positioning shaft is introduced into said hole.
9 . The method according to claim 1 , wherein the step of placing said medical device at least partly surrounding said positioning shaft, comprises placing an artificial caput femur or artificial caput femur surface onto said positioning shaft in the hip joint, wherein said positioning shaft is introduced into said hole.
10 . The method according to claim 9 , wherein the step of placing said medical device at least partly surrounding said positioning shaft, further comprises placing an artificial acetabulum or artificial acetabulum surface onto said positioning shaft in the hip joint, wherein said positioning shaft is introduced into said hole.
11 . The method according to claim 10 , wherein at least one of the artificial caput femur or artificial caput femur surface and the artificial acetabulum or artificial acetabulum having a through going hole with an inlet and an outlet, wherein the method further comprising introducing the positioning shaft into said hole inlet and passing out from the hole outlet.
12 . An arthroscopic method of treating a hip joint of a patient, said method comprising the steps of:
inserting at least one needle or a tube like instrument into the patient's hip joint,
using the needle or tube like instrument to fill the joint with a fluid,
placing at least two arthroscopic trocars in the joint,
inserting a camera through one of the arthroscopic trocars into the joint,
dissecting an area of the hip joint,
placing a positioning shaft in the hip joint,
providing a medical device comprising a positioning hole, said positioning hole being adapted to be placed and dimensioned such that the medical device is adapted to be fitted using said positioning shaft,
placing said medical device at a distance from a final implanted position and at least partly onto said positioning shaft,
moving the medical device towards the final implanted position along the positioning shaft
fixating said medical device in the final implanted position in the hip joint using said positioning shaft.
13 . The method according to claim 12 , wherein said method further comprises the step of removing said positioning shaft.
14 . The method according to claim 12 , wherein fixating the medical device in the hip joint comprises fixating the medical device in the hip joint using a fixation element selected from a group consisting of:
at least one screw,
at least one pin,
at least one portion of at least one of the parts adapted to be introduced into the other part,
a first part being adapted to be sliding into a second part,
form fitting,
pin,
wire,
and
other mechanical connecting members.
15 . The method according to claim 12 , wherein the step of fixating the medical device in the hip joint, comprises the step of fixating the medical device to the caput femur or femoral bone.
16 . The method according to claim 12 , wherein fixating the medical device in the hip joint, comprises fixating the medical device to the acetabulum or pelvic bone.
17 . The method according to claim 12 , wherein the step of placing a positioning shaft in the hip joint, comprises the step of placing a positioning shaft in the caput femur or femoral bone.
18 . The method according to claim 12 , wherein the step of placing a positioning shaft in the hip joint, comprises the step of placing a positioning shaft in the acetabulum or pelvic bone.
19 . The method according to claim 12 , wherein the step of placing said medical device at least partly surrounding said positioning shaft, comprising placing an artificial acetabulum or artificial acetabulum surface onto said positioning shaft in the hip joint, wherein said positioning shaft is introduced into said hole.
20 . The method according to claim 12 , wherein the step of placing said medical device at least partly surrounding said positioning shaft, comprising placing an artificial caput femur or artificial caput femur surface onto said positioning shaft in the hip joint, wherein said positioning shaft is introduced into said hole.